CN117169859A - Automatic direction calibration method for wind-finding radar - Google Patents
Automatic direction calibration method for wind-finding radar Download PDFInfo
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- CN117169859A CN117169859A CN202310733495.8A CN202310733495A CN117169859A CN 117169859 A CN117169859 A CN 117169859A CN 202310733495 A CN202310733495 A CN 202310733495A CN 117169859 A CN117169859 A CN 117169859A
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Abstract
The invention discloses a method for calibrating automatic direction of a wind-finding radar, which relates to the technical field of radar detection and comprises the following steps: measuring the azimuth angle alpha of the wind-finding radar in real time by utilizing an electronic compass, and sending the azimuth angle alpha to a main control board; reading an angle difference beta between a wind-finding radar and a beam control module which are preset in terminal software; and obtaining an angle compensation value theta by utilizing the sum of the angle difference beta and the azimuth angle alpha, automatically compensating the angle through the angle compensation value theta when terminal software synthesizes the wind field, and automatically calibrating the direction of the wind-finding radar at any placement position. The invention can improve the automation degree of the equipment, and can realize the automatic completion of the direction calibration and the start of the work of the equipment at any placement position by outputting the angle value in real time through the electronic compass.
Description
Technical Field
The invention relates to the technical field of radar detection, in particular to a method for calibrating an automatic direction of a wind-finding radar.
Background
The wind-finding radar adopting the multi-beam scanning mode (hereinafter referred to as beam scanning wind-finding radar) obtains radial velocity by transmitting 3, 4 or N detection beams and receiving back scattering echo signals, and performs inversion by the radial velocity in different directions and corresponding azimuth angles and pitch angles, so that real-time measurement of wind field information is realized. It is necessary to calibrate the beam emission direction before the detection operation is performed. There is a large error in the measured data if the radar is not calibrated.
The calibration of the current beam transmitting direction is finished manually, and the general flow is as follows: (1) determining an angle deviation value by adopting compass and equipment aiming; (2) measuring the angular deviation of the device and the beam control module; (3) and calculating an angle compensation value and setting the angle compensation value on terminal software. The primary direction calibration time is approximately 15 minutes. The operation precision of manually calibrating the beam emission direction depends on the operation proficiency of an operator, the operation time is long, calibration is needed again when the position of each time of equipment changes, if the position is offset due to accidents during the working process of the radar, and meanwhile, a worker does not timely detect the deviation of a measurement result, so that the automatic use of the portable laser wind-finding radar is greatly limited.
Disclosure of Invention
The invention provides a method for calibrating an automatic direction of a wind-finding radar, and aims to solve the problem that the automatic use of a laser wind-finding radar in the prior art is inconvenient.
In order to achieve the above object, the present invention provides the following technical solutions: a method for automatic direction calibration of a wind-finding radar comprises the following steps:
measuring the azimuth angle alpha of the wind-finding radar;
reading a preset angle difference beta between the wind-finding radar and the beam control module;
obtaining an angle compensation value theta by utilizing the sum of the azimuth angle alpha and the angle difference beta;
and (3) carrying out automatic direction calibration on the wind-finding radar through the angle compensation value theta.
Preferably, before the preset angle difference beta between the wind-finding radar and the beam control module is read, the beam transmitting direction is calibrated, and at the moment, the measuring equipment and the wind-finding radar direction are kept consistent.
Preferably, the obtaining the angle compensation value θ by using the sum of the azimuth angle α and the angle difference β includes the steps of:
setting the real north to 0 degree, and measuring the angle alpha between the wind-finding radar and the real north in real time;
and obtaining an angle compensation value theta by using the azimuth angle alpha and the angle difference value beta.
Preferably, the measurement angle difference beta is measured clockwise by taking the equipment direction as the start, and the measurement range is 0-360 degrees.
Preferably, when the angle compensation value θ is obtained by using the azimuth angle α and the angle difference β, the angle compensation value θ needs to be determined, and the determining includes:
judging whether the angle compensation value theta is smaller than 360 degrees, if so, setting the angle compensation value theta; let θ=θ -360 °;
where θ=α+β.
Preferably, the azimuth angle α starts at an angle of 0 degrees and is set in the range of 0-360 ° by clockwise measurement.
Preferably, the device for measuring the azimuth angle alpha of the wind-finding radar is one of an electronic compass, a gyroscope, a GPS (global positioning system) positioning or Beidou.
Preferably, the beam control module is a motor or a phased array antenna.
Preferably, when the automatic direction of the wind-finding radar is calibrated, the wind-finding radar in DBS or VAD scanning mode is adopted.
Compared with the prior art, the invention has the following beneficial effects:
the invention can improve the automation degree of equipment use, the invention outputs the angle value alpha of the wind-finding radar through the real-time measuring equipment, reads the angle difference value beta of the preset wind-finding radar and the wave beam control module, obtains the angle compensation value theta through the angle value alpha and the angle difference value beta, carries out automatic direction calibration on the wind-finding radar through the angle compensation value theta, can realize that the equipment automatically finishes direction calibration at any placement position and starts working, reduces manual participation and improves the accuracy of the angle compensation value.
Drawings
FIG. 1 is a schematic diagram of four-beam sounding according to the present invention;
FIG. 2 is a diagram of a hardware module connection provided by the present invention;
FIG. 3 is a schematic diagram of the electronic compass angle calibration provided by the invention;
FIG. 4 is a flow chart of automatic angle calibration provided by the invention.
Detailed Description
The following describes the embodiments of the present invention further with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
For understanding and description, a method for automatic direction calibration of a wind-finding radar according to an embodiment of the present invention is described in detail below.
Fig. 1 is a schematic diagram of four-beam detection of a beam control module, which illustrates an operation mode of a wind-finding radar in a multi-beam scanning mode.
As shown in fig. 2-4, a method for automatic direction calibration of a wind-finding radar includes the following specific information flow: and the electronic compass keeps consistent with the direction of the equipment and is connected with a main control board of the equipment, the measured azimuth angle of the equipment is sent to the main control board in real time, and the main control board transmits data to terminal software. Meanwhile, the method specifically comprises the following steps:
step 1: the azimuth angle α of the wind-finding radar is measured.
The method comprises the following steps: the azimuth angle alpha is measured in real time by using an electronic compass, and the azimuth angle alpha is sent to a main control board.
The angle alpha is measured clockwise starting at an angle of 0 degrees and is set in the range of 0-360 deg..
And controlling the beam transmitting direction through the equipment azimuth angle and the beam control module, and realizing automatic direction calibration of the radar at any placement position by utilizing the angle difference value of the equipment and the beam control module and the electronic compass real-time measurement equipment azimuth angle. Wherein the device is a wind-finding radar.
Before calibrating the beam transmitting direction, the electronic compass is required to be kept consistent with the equipment direction, and the azimuth angle of the wind-finding radar measured by the electronic compass is transmitted to a main control board of the equipment in real time.
Step 2: and reading a preset angle difference beta between the wind-finding radar and the beam control module.
Wherein the angle difference beta is preset in terminal software. And simultaneously, when the angle difference value beta is measured, clockwise measurement is carried out by taking the equipment direction as the starting point, and the measurement range is 0-360 degrees.
Step 3: the angle compensation value theta is obtained by using the sum of the angle difference beta and the azimuth angle alpha.
Step 3.1: the real north direction is set to be 0 degree, and the angle alpha between the equipment and the real north direction is measured in real time.
Step 3.2: and receiving the azimuth angle alpha through terminal software, and obtaining an angle compensation value theta by utilizing the angle alpha and an angle difference value beta.
Step 3.3: the terminal software automatically modifies the angle compensation value to be theta.
Wherein the angle compensation value θ is determined when the angle compensation value θ is obtained, wherein θ=α+β. Judging whether the angle compensation value theta is smaller than 360 degrees, if so, setting the angle compensation value theta; otherwise let θ=θ -360 °.
Step 4: and (5) carrying out automatic direction calibration on the wind-finding radar through the angle compensation value theta.
And (3) performing automatic angle compensation when terminal software synthesizes a wind field, and performing automatic direction calibration on wind-finding radars at any placement positions.
Wherein, the electronic compass can be replaced by a gyroscope, GPS positioning and Beidou; the beam control module adopts a motor and a phased array antenna; the invention adopts the wind-finding radar with DBS and VAD scanning modes.
The invention improves the accuracy and precision of the direction calibration. The accuracy of the manual calibration result depends on the operation proficiency of an operator, manual participation is not needed in automatic calibration, and compared with a traditional compass with a pointer type and balance frame structure, the electronic compass has higher accuracy, so that the accuracy of an angle compensation value to be set can be improved.
Working principle: before the beam scanning wind-finding radar performs detection work, the beam transmitting direction needs to be calibrated. The north direction is used as an angle of 0 degrees, the azimuth angle value of the beam transmitting direction is determined, the difference value between the azimuth angle value and the ideal angle value is calculated, and the angle compensation is carried out when the terminal software synthesizes the wind field. The beam transmitting direction is determined by the device azimuth angle and the beam control module, so that the radar can automatically complete the direction calibration at any placement position by utilizing the angle difference value between the device and the beam control module and the electronic compass for measuring the device azimuth angle in real time.
The above embodiments are merely preferred embodiments of the present invention, the protection scope of the present invention is not limited thereto, and any simple changes or equivalent substitutions of technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present invention disclosed in the present invention belong to the protection scope of the present invention.
Claims (9)
1. A method for automatic direction calibration of a wind-finding radar, comprising:
measuring the azimuth angle alpha of the wind-finding radar;
reading a preset angle difference beta between the wind-finding radar and the beam control module;
obtaining an angle compensation value theta by utilizing the sum of the azimuth angle alpha and the angle difference beta;
and (3) carrying out automatic direction calibration on the wind-finding radar through the angle compensation value theta.
2. The method for automatic direction calibration of a wind-finding radar according to claim 1, wherein the calibration of the beam emission direction is required before the reading of the preset angle difference β between the wind-finding radar and the beam control module, and the measuring device is kept consistent with the wind-finding radar direction.
3. A method for automatic direction calibration of a wind-finding radar according to claim 1, wherein said obtaining an angle compensation value θ by using the sum of said azimuth angle α and the angle difference β comprises the steps of:
setting the real north to 0 degree, and measuring the angle alpha between the wind-finding radar and the real north in real time;
and utilizing the sum angle compensation value theta of the azimuth angle alpha and the angle difference value beta.
4. A method for automatic direction calibration of a wind-finding radar according to claim 1, wherein the angle difference β is measured clockwise from the direction of the device over a range of 0-360 °.
5. The method for automatic direction calibration of a wind-finding radar according to claim 4, wherein when the angle compensation value θ is obtained by using the azimuth angle α and the angle difference β, the angle compensation value θ is determined, and the determining includes:
judging whether the angle compensation value theta is smaller than 360 degrees, if so, setting the angle compensation value theta; let θ=θ -360 °;
where θ=α+β.
6. A method for automatic direction calibration for a wind-finding radar according to claim 4, wherein the azimuth angle α is set in the range of 0-360 ° starting at 0 ° and measured clockwise.
7. The method for automatic direction calibration of a wind-finding radar according to claim 1, wherein the measuring device for measuring the azimuth angle α of the wind-finding radar is one of an electronic compass, a gyroscope, a GPS location, or a beidou.
8. A method for automatic direction calibration of a wind-finding radar as claimed in claim 1, wherein the beam control module is a motor or a phased array antenna.
9. A method for automatic direction calibration of a wind-finding radar according to claim 1, wherein the wind-finding radar in DBS or VAD scanning mode is used in the automatic direction calibration of the wind-finding radar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310733495.8A CN117169859A (en) | 2023-06-20 | 2023-06-20 | Automatic direction calibration method for wind-finding radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310733495.8A CN117169859A (en) | 2023-06-20 | 2023-06-20 | Automatic direction calibration method for wind-finding radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117169859A true CN117169859A (en) | 2023-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310733495.8A Pending CN117169859A (en) | 2023-06-20 | 2023-06-20 | Automatic direction calibration method for wind-finding radar |
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| Country | Link |
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| CN (1) | CN117169859A (en) |
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2023
- 2023-06-20 CN CN202310733495.8A patent/CN117169859A/en active Pending
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