CN111726133A - Radio frequency signal processing method and device, storage medium and electronic device - Google Patents
Radio frequency signal processing method and device, storage medium and electronic device Download PDFInfo
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- CN111726133A CN111726133A CN202010415196.6A CN202010415196A CN111726133A CN 111726133 A CN111726133 A CN 111726133A CN 202010415196 A CN202010415196 A CN 202010415196A CN 111726133 A CN111726133 A CN 111726133A
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- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
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Abstract
The invention provides a radio frequency signal processing device and method, a storage medium and an electronic device. Wherein, above-mentioned treatment facility includes: the radio frequency receiving module is used for receiving radio frequency signals, processing the radio frequency signals to obtain intermediate frequency signals, and inputting the intermediate frequency signals to the spectrum analysis module; the processing module is connected with the radio frequency receiving module and used for analyzing the intermediate frequency signal to determine the frequency of the intermediate frequency signal, determining a target local oscillator frequency according to the frequency, a preset frequency threshold value and the local oscillator frequency value of the radio frequency signal, and sending the target local oscillator frequency to the radio frequency receiving module to indicate the radio frequency receiving module to adjust the frequency of the radio frequency signal received by the radio frequency receiving module according to the target local oscillator frequency to be the preset frequency threshold value, so that the problems that the frequency of the radio frequency signal in the related technology is unstable, the sensitivity of a radio frequency receiver is low and the like are solved.
Description
Technical Field
The invention relates to the field of intelligent transportation, in particular to a radio frequency signal processing method and equipment, a storage medium and an electronic device.
Background
An Electronic Toll Collection (ETC) System is the most advanced intelligent traffic Collection System in the world at present, and a Dedicated Short Range Communication (DSRC) technology is used between an On Board Unit (OBU) installed On a vehicle and a Road Side Unit (RSU) arranged beside an ETC lane so that the vehicle keeps a driving state without stopping in the whole charging process. Along with the continuous expansion of ETC market, the continuous increase of ETC technical application scene has put forward more rigorous requirement to the rate of accuracy of communication between RSU and OBU.
In the ETC system, a radio frequency (typically, 5.8G microwave signal) is used for communication between the on-board unit and the roadside unit. The radio frequency receiver is a device for processing received radio frequency signals, and is a radio frequency signal receiving and processing channel.
In the DSRC technology of the existing ETC system, the receiving bandwidth of a radio frequency chip and the like is fixed, in order to meet the requirement of receiving radio frequency signals of different ETC equipment, the receiving bandwidth can only be enlarged within a standard range, and what is brought is that the receiving sensitivity is low, the anti-interference capability is weak, and the anti-interference of other frequency point signals is easy to cause.
Aiming at the problems that in the related art, the frequency of a radio frequency signal is unstable, so that the sensitivity of a radio frequency receiver is low and the like, an effective technical scheme is not provided yet.
Disclosure of Invention
The embodiment of the invention provides a processing method and equipment of a radio frequency signal, a storage medium and an electronic device, which are used for at least solving the problems that the frequency of the radio frequency signal is unstable, the sensitivity of a radio frequency receiver is low and the like in the related technology.
According to an embodiment of the present invention, there is provided a processing apparatus of a radio frequency signal, including: the radio frequency receiving module is used for receiving radio frequency signals, processing the radio frequency signals to obtain intermediate frequency signals, and inputting the intermediate frequency signals to the processing module; and the processing module is connected with the radio frequency receiving module and used for analyzing the intermediate frequency signal so as to determine the frequency of the intermediate frequency signal, determining a target local oscillation frequency according to the frequency, a preset frequency threshold value and the local oscillation frequency value of the radio frequency signal, and sending the target local oscillation frequency to the radio frequency receiving module so as to indicate the radio frequency receiving module to adjust the frequency of the radio frequency signal received by the radio frequency receiving module according to the target local oscillation frequency to be the preset frequency threshold value.
In an optional embodiment, the processing module includes: the frequency spectrum analysis module is used for analyzing the intermediate frequency signal to determine the frequency of the intermediate frequency signal, outputting the intermediate frequency signal to a target module under the condition that the frequency of the intermediate frequency signal is consistent with a preset frequency threshold value, and outputting the intermediate frequency signal to a frequency calculation module under the condition that the frequency of the intermediate frequency signal is not consistent with the preset frequency threshold value; the frequency calculation module is connected with the frequency spectrum analysis module and is used for determining a frequency difference value according to the frequency and the preset frequency threshold value, determining a target local oscillation frequency according to a local oscillation frequency value of the radio-frequency signal and the frequency difference value, and sending the target local oscillation frequency to the frequency control module; and the frequency control module is used for sending the target local oscillator frequency to the radio frequency receiving module.
In an optional embodiment, the frequency control module is further configured to determine a difference between a local oscillation frequency value of the radio frequency signal and the frequency difference, and send the difference to the radio frequency receiving module.
In an optional embodiment, the processing device further comprises: and the filter module is connected with the frequency analysis module and used for receiving the intermediate frequency signal output by the frequency analysis module and filtering the intermediate frequency signal.
According to another alternative embodiment of the present invention, there is also provided a radio frequency signal processing method applied to the radio frequency signal processing apparatus described in any one of the above, including: receiving a radio frequency signal through the radio frequency receiving module; processing the radio frequency signal to obtain an intermediate frequency signal, and analyzing the intermediate frequency signal to determine the frequency of the intermediate frequency signal; determining a target local oscillation frequency according to the frequency, a preset frequency threshold value and the local oscillation frequency value of the radio frequency signal, and sending the target local oscillation frequency to the radio frequency receiving module so as to instruct the radio frequency receiving module to adjust the frequency of the radio frequency signal received by the radio frequency receiving module to be the preset frequency threshold value according to the target local oscillation frequency.
In an optional embodiment, determining a target local oscillation frequency according to the frequency, a preset frequency threshold and a local oscillation frequency value of the radio frequency signal includes: determining a frequency difference value according to the frequency and the preset frequency threshold value; and determining the target local oscillation frequency according to the local oscillation frequency value of the radio frequency signal and the frequency difference value.
In an optional embodiment, determining the target local oscillation frequency according to the local oscillation frequency value of the radio frequency signal and the frequency difference value includes: determining a difference value between a local oscillation frequency value of the radio frequency signal and the frequency difference value; and sending the difference value to the radio frequency receiving module.
In an optional embodiment, after processing the radio frequency signal to obtain an intermediate frequency signal and analyzing the intermediate frequency signal to determine a frequency of the intermediate frequency signal, the method further comprises: and under the condition that the frequency of the intermediate frequency signal is consistent with a preset frequency threshold value, outputting the intermediate frequency signal to a target module, and under the condition that the frequency of the intermediate frequency signal is inconsistent with the preset frequency threshold value, outputting the intermediate frequency signal to a frequency calculation module.
In an optional embodiment, when the frequency of the intermediate frequency signal is consistent with a preset frequency threshold, the intermediate frequency signal is output to a filter module, so that the filter module filters the intermediate frequency signal.
According to another embodiment of the present invention, there is also provided a storage medium having a computer program stored therein, wherein the computer program is configured to execute the method for processing a radio frequency signal of any one of the above when executed.
According to yet another embodiment of the present invention, there is also provided an electronic device, including a memory in which a computer program is stored and a processor configured to execute the computer program to perform the steps in any of the above method embodiments.
By the present invention, there is provided a processing apparatus of a radio frequency signal, comprising: the radio frequency receiving module is used for receiving radio frequency signals, processing the radio frequency signals to obtain intermediate frequency signals, and inputting the intermediate frequency signals to the processing module; a processing module, connected to the rf receiving module, configured to analyze the intermediate frequency signal to determine a frequency of the intermediate frequency signal, and determine a target local oscillation frequency according to the frequency, a preset frequency threshold and a local oscillation frequency value of the rf signal, and send the target local oscillation frequency to the rf receiving module, so as to instruct the rf receiving module to adjust the frequency of the rf signal received by the rf receiving module according to the target local oscillation frequency to be the preset frequency threshold, that is, analyze the intermediate frequency signal through the processing module, and determine the target local oscillation frequency according to the frequency of the intermediate frequency signal, the preset frequency threshold and the local oscillation frequency value of the rf signal, where the target local oscillation frequency is a reference value of the frequency of the rf signal received by the rf receiving module, so as to keep the frequency of the rf signal and the preset frequency threshold stably consistent, by adopting the technical scheme, the problems that the frequency of the radio-frequency signal is unstable, so that the sensitivity of the radio-frequency receiver is low and the like in the related technology are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a block diagram of a configuration of an apparatus for processing a radio frequency signal according to an embodiment of the present invention;
fig. 2 is another block diagram of a device for processing radio frequency signals according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for processing RF signals according to an embodiment of the present invention;
fig. 4 is a block diagram of a frequency adaptive rf receiving device according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating a method for processing a radio frequency signal according to an alternative embodiment of the invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
With the increase of application scenes of ETC systems and the increase of various interferences in a 5.8G frequency band, the performance of equipment is uneven. And more severe requirements are put forward on the receiving sensitivity and the anti-interference capability of a receiving end. Therefore, the requirement of improving the receiving sensitivity and the anti-interference capability and simultaneously ensuring that the device has enough receiving bandwidth is urgent, and in order to solve the requirement, the embodiment of the invention provides the following technical scheme.
According to an embodiment of the present invention, there is provided a processing apparatus for radio frequency signals, and fig. 1 is a block diagram of a structure of a processing apparatus for radio frequency signals according to an embodiment of the present invention, including:
the radio frequency receiving module 10 is configured to receive a radio frequency signal, process the radio frequency signal to obtain an intermediate frequency signal, and input the intermediate frequency signal to the processing module;
the processing module 12 is connected to the radio frequency receiving module, and configured to analyze the intermediate frequency signal to determine a frequency of the intermediate frequency signal, determine a target local oscillation frequency according to the frequency, a preset frequency threshold and a local oscillation frequency value of the radio frequency signal, and send the target local oscillation frequency to the radio frequency receiving module, so as to instruct the radio frequency receiving module to adjust the frequency of the radio frequency signal received by the radio frequency receiving module according to the target local oscillation frequency to be the preset frequency threshold.
Through the technical scheme, the radio frequency signal processing equipment comprises: the radio frequency receiving module is used for receiving radio frequency signals, processing the radio frequency signals to obtain intermediate frequency signals, and inputting the intermediate frequency signals to the spectrum analysis module; a processing module, connected to the rf receiving module, configured to analyze the intermediate frequency signal to determine a frequency of the intermediate frequency signal, and determine a target local oscillation frequency according to the frequency, a preset frequency threshold and a local oscillation frequency value of the rf signal, and send the target local oscillation frequency to the rf receiving module, so as to instruct the rf receiving module to adjust the frequency of the rf signal received by the rf receiving module according to the target local oscillation frequency to be the preset frequency threshold, that is, analyze the intermediate frequency signal through the processing module, and determine the target local oscillation frequency according to the frequency of the intermediate frequency signal, the preset frequency threshold and the local oscillation frequency value of the rf signal, where the target local oscillation frequency is a reference value of the frequency of the rf signal received by the rf receiving module, so as to keep the frequency of the rf signal and the preset frequency threshold stably consistent, by adopting the technical scheme, the problems that the frequency of the radio-frequency signal is unstable, so that the sensitivity of the radio-frequency receiver is low and the like in the related technology are solved.
It should be noted that, the manner in which the radio frequency receiving module 10 processes the radio frequency signal to obtain the intermediate frequency signal may be a mixing operation, or may be any other operation manner that can obtain the intermediate frequency signal, which is not limited in the embodiment of the present invention.
Fig. 2 is another block diagram of a processing apparatus for radio frequency signals according to an embodiment of the present invention, and as shown in fig. 2, the processing module 12 includes: a spectrum analysis module 120, configured to analyze the intermediate frequency signal to determine a frequency of the intermediate frequency signal, output the intermediate frequency signal to a target module when the frequency of the intermediate frequency signal is consistent with a preset frequency threshold, and output the intermediate frequency signal to a frequency calculation module when the frequency of the intermediate frequency signal is inconsistent with the preset frequency threshold; a frequency calculation module 122, connected to the spectrum analysis module, configured to determine a frequency difference according to the frequency and the preset frequency threshold, determine the target local oscillation frequency according to the local oscillation frequency value of the radio frequency signal and the frequency difference, and send the target local oscillation frequency to the frequency control module; the frequency control module 124 is configured to send the target local oscillation frequency to the radio frequency receiving module, where the frequency calculation module is further configured to determine a difference between a local oscillation frequency value of the radio frequency signal and the frequency difference, and send the difference to the frequency control module.
That is to say, the spectrum analysis module in the embodiment of the present invention needs to perform a determination on the intermediate frequency signal output by the radio frequency receiving module, and if the intermediate frequency signal meets the requirement (for example, is the same as a preset frequency threshold), the intermediate frequency signal is directly output to a target module, where the target module may be a filter module that can filter the intermediate frequency signal or another module.
In an optional embodiment, the processing module is optionally divided into a spectrum analysis module, a spectrum calculation module, and a spectrum control module for implementing the functions implemented by the processing module, and in other implementations, the processing module may be further divided into two or four modules as long as the following functions of the processing module can be implemented: the embodiment of the present invention is not limited to "analyze the intermediate frequency signal to determine the frequency of the intermediate frequency signal, determine a target local oscillation frequency according to the frequency, a preset frequency threshold and the local oscillation frequency value of the radio frequency signal, send the target local oscillation frequency to the radio frequency receiving module, and instruct the radio frequency receiving module to adjust the frequency of the radio frequency signal received by the radio frequency receiving module according to the target local oscillation frequency to be the preset frequency threshold.
It should be noted that, the above technical solution for determining the frequency may adopt any algorithm appearing in the prior art, and the embodiment of the present invention does not limit this.
As shown in fig. 2, the processing device according to the embodiment of the present invention may further include: a filter module 14, wherein the filter module is connected to the spectrum analysis module, and is configured to filter the intermediate frequency signal output by the radio frequency receiving module, optionally, the filter module 14 may be a narrow bandwidth filter module, so that the intermediate frequency signal forms a signal with a narrower frequency band after passing through the narrow bandwidth filter module, and the signal with the narrower frequency band may be used for subsequent demodulation and decoding.
Optionally, the filter module 14 and the rf receiving module 10 are both connected to the spectrum analyzing module 120 in the processing module, which is not explicitly shown in fig. 2.
It should be noted that, the processing device for the radio frequency signal in the embodiment of the present invention may be inherited in the vehicle-mounted unit or the road side unit, which is not limited in the embodiment of the present invention.
An embodiment of the present invention further provides a radio frequency signal processing method, which is applied to the radio frequency signal processing device described in any of the foregoing embodiments, and fig. 3 is a flowchart of the radio frequency signal processing method according to the embodiment of the present invention, as shown in fig. 3, including:
step S302, receiving a radio frequency signal through the radio frequency receiving module;
step S304, processing the radio frequency signal to obtain an intermediate frequency signal, and analyzing the intermediate frequency signal to determine the frequency of the intermediate frequency signal;
step S306, determining a target local oscillation frequency according to the frequency, a preset frequency threshold and the local oscillation frequency value of the radio frequency signal, and sending the target local oscillation frequency to the radio frequency receiving module, so as to instruct the radio frequency receiving module to adjust the frequency of the radio frequency signal received by the radio frequency receiving module to be the preset frequency threshold according to the target local oscillation frequency.
According to the technical scheme, the radio frequency receiving module receives a radio frequency signal, processes the radio frequency signal to obtain an intermediate frequency signal, analyzes the intermediate frequency signal to determine the frequency of the intermediate frequency signal, determines a target local oscillator frequency according to the frequency, a preset frequency threshold value and a local oscillator frequency value of the radio frequency signal, sends the target local oscillator frequency to the radio frequency receiving module to instruct the radio frequency receiving module to adjust the frequency of the radio frequency signal received by the radio frequency receiving module to be the preset frequency threshold value according to the target local oscillator frequency, that is, the processing module analyzes the intermediate frequency signal and determines the target local oscillator frequency according to the frequency of the intermediate frequency signal, the preset frequency threshold value and the local oscillator frequency value of the radio frequency signal, wherein the target local oscillator frequency is a reference value of the frequency of the radio frequency signal received by the radio frequency receiving module, the technical scheme of the invention is adopted to keep the frequency of the radio frequency signal consistent with the preset frequency threshold value all the time, thereby ensuring the stability of the frequency of the radio frequency signal and improving the sensitivity of the radio frequency receiver.
It should be noted that, the manner in which the radio frequency receiving module 10 processes the radio frequency signal to obtain the intermediate frequency signal may be a mixing operation, or may be any other operation manner that can obtain the intermediate frequency signal, which is not limited in the embodiment of the present invention.
There may be various implementations of the step S306, and in an optional embodiment, a frequency difference value is determined according to the frequency and the preset frequency threshold; determining the target local oscillation frequency according to the local oscillation frequency value of the radio frequency signal and the frequency difference value, specifically determining the local oscillation frequency value of the radio frequency signal and the difference value of the frequency difference value; and sending the difference value to the radio frequency receiving module.
It can be understood that the "difference value" may be understood as a "target local oscillation frequency", and the radio frequency receiving module may dynamically adjust the frequency of the received radio frequency signal according to the target local oscillation frequency, so as to control the frequency domain of the radio frequency signal to be consistent with the preset frequency threshold.
In an optional embodiment, after processing the radio frequency signal to obtain an intermediate frequency signal and analyzing the intermediate frequency signal to determine a frequency of the intermediate frequency signal, the method further comprises: the method comprises the steps of outputting an intermediate frequency signal to a target module under the condition that the frequency of the intermediate frequency signal is consistent with a preset frequency threshold, and outputting the intermediate frequency signal to a frequency calculation module under the condition that the frequency of the intermediate frequency signal is inconsistent with the preset frequency threshold, wherein the intermediate frequency signal is output to a filter module under the condition that the frequency of the intermediate frequency signal is consistent with the preset frequency threshold, so that the filter module filters the intermediate frequency signal.
That is to say, the spectrum analysis module in the embodiment of the present invention needs to perform a determination on the intermediate frequency signal output by the radio frequency receiving module, and if the intermediate frequency signal meets the requirement (for example, is the same as a preset frequency threshold), the intermediate frequency signal is directly output to a target module, where the target module may be a filter module that can filter the intermediate frequency signal or another module.
After receiving the radio frequency signal through the radio frequency receiving module, the method further includes: and filtering the intermediate frequency signal output by the radio frequency receiving module.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The following explains the technical solution of the above-mentioned radio frequency signal processing method with an example, but is not limited to the technical solution of the embodiment of the present invention.
An alternative embodiment of the present invention provides a radio frequency receiving method and device capable of frequency adaptation, and as shown in fig. 4, the radio frequency receiving device capable of frequency adaptation includes: a radio frequency receiving module 10, a filter module 14, a demodulation decoding module 16, a spectrum analyzing module 120, a frequency calculating module 122, and a frequency control module 124, wherein,
the radio frequency receiving module is used for performing operations such as frequency mixing and filtering on received radio frequency signals according to a local oscillation frequency set by a system and outputting intermediate frequency signals to the frequency spectrum analysis module, the frequency spectrum analysis module needs to judge the intermediate frequency signals output by the radio frequency receiving module, if the intermediate frequency signals meet requirements (for example, the intermediate frequency signals are the same as a preset frequency threshold), the intermediate frequency signals are directly output to the filter module for filtering, and if the intermediate frequency signals do not meet the requirements, the intermediate frequency signals need to be output to the frequency calculation module;
and the filter module is used for filtering the intermediate frequency signal by using a narrow-band filter in order to improve the receiving sensitivity and the anti-interference capability.
And the demodulation and decoding module is used for demodulating and decoding FM0 (Bi-Phase Space, Bi-Phase Space code) after receiving the local oscillation signal and outputting a digital signal.
A spectrum analysis module for performing spectrum analysis in real time to determine frequency fiAnd passes the determined frequency value to a frequency calculation module.
A frequency calculation module for calculating the frequency and the preset frequency f in real time according to the following formulaIDifference Δ f (corresponding to the frequency difference of the above embodiment) (corresponding to the preset frequency threshold of the above embodiment), that is: f ═ fi-fI；
Further, an adjusted local frequency fO (corresponding to the target local frequency in the above embodiment) can be calculated from the local frequency value fO (corresponding to the local frequency value of the rf signal in the above embodiment) and Δ f. I.e. determined by the following formula: and f, fO-delta f, and further transmitting the calculated adjusted local frequency to the frequency control module.
The frequency control module controls the radio frequency receiving module according to the real-time received adjusted local oscillation frequency, and sets the local oscillation frequency of the radio frequency receiving module, so that the frequency is always controlled at the preset frequency.
Fig. 5 is a flowchart illustrating a method for processing a radio frequency signal according to an alternative embodiment of the present invention, as shown in fig. 5, including:
step 1: the radio frequency receiving module receives radio frequency signals, carries out frequency mixing and filtering on the radio frequency signals according to the set local oscillation frequency to obtain intermediate frequency signals, and then outputs the intermediate frequency signals to the spectrum analysis module.
Step 2: the spectrum analysis module is used for sampling and analyzing the intermediate frequency signal to calculate the frequency, the spectrum analysis module needs to judge the intermediate frequency signal output by the radio frequency receiving module, if the intermediate frequency signal meets the requirement (for example, the intermediate frequency signal is the same as a preset frequency threshold), the intermediate frequency signal is directly output to the filter module to be filtered, if the intermediate frequency signal does not meet the requirement, the intermediate frequency signal needs to be output to the frequency calculation module, and the spectrum analysis method can be Fast Fourier Transform (FFT for short) and other phase analysis methods;
and step 3: the filter module adopts a narrow bandwidth filter to filter the intermediate frequency signal, specifically, the filter module can filter the high frequency component of the sum of the radio frequency and the local oscillator generated after the frequency mixing.
And 4, step 4: the frequency calculation module calculates the frequency of the incident signal at the moment according to the frequency given by the spectrum analysis module, and then calculates the local oscillation frequency according to a preset frequency value.
And 5: and the frequency control module is used for configuring the radio frequency receiving module according to the local oscillation frequency calculated by the frequency calculation module so as to keep the frequency in the band of the filter module all the time.
Step 6: and the demodulation and decoding module is used for demodulating the intermediate frequency signal and decoding the FM0, and outputting a digital signal for a rear end to perform data frame analysis, wherein the rear end can be an on-board unit or a road side unit and is used for performing analysis processing on the digital signal.
In conclusion, according to the technical scheme, the frequency is calculated in real time through the spectrum analysis module; calculating the adjusted local oscillation frequency according to the difference value of the real-time frequency and the preset frequency; the local oscillation frequency of the radio frequency receiving module is set in real time through the frequency control module, and the purpose of incident signal frequency self-adaption is achieved. The receiving bandwidth of the device is improved, real-time narrow-band receiving can be realized, and the receiving sensitivity and the anti-interference capability of the receiver are improved.
Embodiments of the present invention also provide a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
Alternatively, in the present embodiment, the storage medium may be configured to store a computer program for executing the steps of:
s1, receiving radio frequency signals through the radio frequency receiving module;
s2, processing the radio frequency signal to obtain an intermediate frequency signal, and analyzing the intermediate frequency signal to determine the frequency of the intermediate frequency signal;
and S3, determining a target local oscillation frequency according to the frequency, a preset frequency threshold value and the local oscillation frequency value of the radio frequency signal, and sending the target local oscillation frequency to the radio frequency receiving module to instruct the radio frequency receiving module to adjust the frequency of the radio frequency signal received by the radio frequency receiving module to be the preset frequency threshold value according to the target local oscillation frequency.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Embodiments of the present invention also provide an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the above method embodiments.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
Optionally, in this embodiment, the processor may be configured to execute the following steps by a computer program:
s1, receiving radio frequency signals through the radio frequency receiving module;
s2, processing the radio frequency signal to obtain an intermediate frequency signal, and analyzing the intermediate frequency signal to determine the frequency of the intermediate frequency signal;
and S3, determining a target local oscillation frequency according to the frequency, a preset frequency threshold value and the local oscillation frequency value of the radio frequency signal, and sending the target local oscillation frequency to the radio frequency receiving module to instruct the radio frequency receiving module to adjust the frequency of the radio frequency signal received by the radio frequency receiving module to be the preset frequency threshold value according to the target local oscillation frequency.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented in a general purpose computing system, centralized on a single computing system or distributed across a network of computing systems, or alternatively implemented in program code that is executable by a computing system, such that the steps shown and described may be executed by a computing system on storage systems, and in some cases, performed in an order other than that shown and described herein, or fabricated separately as individual integrated circuit modules, or fabricated as a single integrated circuit module from a plurality of modules or steps. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. An apparatus for processing radio frequency signals, comprising:
the radio frequency receiving module is used for receiving radio frequency signals, processing the radio frequency signals to obtain intermediate frequency signals, and inputting the intermediate frequency signals to the processing module;
and the processing module is connected with the radio frequency receiving module and used for analyzing the intermediate frequency signal so as to determine the frequency of the intermediate frequency signal, determining a target local oscillation frequency according to the frequency, a preset frequency threshold value and the local oscillation frequency value of the radio frequency signal, and sending the target local oscillation frequency to the radio frequency receiving module so as to indicate the radio frequency receiving module to adjust the frequency of the radio frequency signal received by the radio frequency receiving module according to the target local oscillation frequency to be the preset frequency threshold value.
2. The apparatus for processing radio frequency signals according to claim 1, wherein the processing module comprises:
the frequency spectrum analysis module is used for analyzing the intermediate frequency signal to determine the frequency of the intermediate frequency signal, outputting the intermediate frequency signal to a target module under the condition that the frequency of the intermediate frequency signal is consistent with a preset frequency threshold value, and outputting the intermediate frequency signal to a frequency calculation module under the condition that the frequency of the intermediate frequency signal is not consistent with the preset frequency threshold value;
the frequency calculation module is connected with the spectrum analysis module and is used for determining a frequency difference value according to the frequency and the preset frequency threshold value, determining a target local oscillation frequency according to a local oscillation frequency value of the radio-frequency signal and the frequency difference value, and sending the target local oscillation frequency to the frequency control module;
and the frequency control module is used for sending the target local oscillator frequency to the radio frequency receiving module.
3. The device according to claim 2, wherein the frequency calculation module is further configured to determine a difference between a local oscillation frequency value of the radio frequency signal and the frequency difference value, and send the difference value to the frequency control module.
4. The apparatus for processing a radio frequency signal according to claim 1, further comprising: a filter module, wherein,
the filter module is connected with the frequency analysis module and used for receiving the intermediate frequency signal output by the frequency analysis module and filtering the intermediate frequency signal.
5. A method for processing a radio frequency signal, applied to the apparatus for processing a radio frequency signal according to any one of claims 1 to 4, comprising:
receiving a radio frequency signal through the radio frequency receiving module;
processing the radio frequency signal to obtain an intermediate frequency signal, and analyzing the intermediate frequency signal to determine the frequency of the intermediate frequency signal;
determining a target local oscillation frequency according to the frequency, a preset frequency threshold value and the local oscillation frequency value of the radio frequency signal, and sending the target local oscillation frequency to the radio frequency receiving module so as to instruct the radio frequency receiving module to adjust the frequency of the radio frequency signal received by the radio frequency receiving module to be the preset frequency threshold value according to the target local oscillation frequency.
6. The method according to claim 5, wherein determining a target local oscillation frequency according to the frequency, a preset frequency threshold and a local oscillation frequency value of the radio frequency signal comprises:
determining a frequency difference value according to the frequency and the preset frequency threshold value;
and determining the target local oscillation frequency according to the local oscillation frequency value of the radio frequency signal and the frequency difference value.
7. The method according to claim 6, wherein determining the target local oscillation frequency according to the local oscillation frequency value of the radio frequency signal and the frequency difference value comprises:
determining a difference value between a local oscillation frequency value of the radio frequency signal and the frequency difference value;
and sending the difference value to the radio frequency receiving module.
8. The method of claim 5, wherein after processing the radio frequency signal to obtain an intermediate frequency signal and analyzing the intermediate frequency signal to determine the frequency of the intermediate frequency signal, the method further comprises:
and under the condition that the frequency of the intermediate frequency signal is consistent with a preset frequency threshold value, outputting the intermediate frequency signal to a target module, and under the condition that the frequency of the intermediate frequency signal is inconsistent with the preset frequency threshold value, outputting the intermediate frequency signal to a frequency calculation module.
9. The method according to claim 8, wherein when the frequency of the if signal is consistent with a preset frequency threshold, the if signal is output to a filter module, so that the filter module filters the if signal.
10. A computer-readable storage medium, in which a computer program is stored, wherein the computer program is configured to carry out the method of any one of claims 5 to 9 when executed.
11. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 5 to 9.
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