CN106342226B - The detection method of radar altitude simulator - Google Patents
The detection method of radar altitude simulatorInfo
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Abstract
一种雷达高度模拟器的检测方法，本发明属于雷达高度表的检测方法，尤其涉及雷达高度表回波模拟器等效高度参数的检测方法。其特征在于，由以下列几个步骤：1)测量等效高度检测系统的延迟时间；2)校正等效高度检测系统；3)测量设定高度的待测的雷达高度模拟器延迟时间；4)计算出待测雷达高度模拟器的误差。本发明对雷达高度表检测精度高、检测的数据范围大，能直观发现信号失真、泄漏等情况。
A detection method of a radar altimeter simulator, the invention belongs to a detection method of a radar altimeter, in particular to a detection method of an equivalent height parameter of a radar altimeter echo simulator. It is characterized in that, by the following several steps: 1) measure the delay time of equivalent height detection system; 2) correct equivalent height detection system; 3) measure the delay time of the radar altitude simulator to be measured of setting height; 4 ) to calculate the error of the radar height simulator to be tested. The invention has high detection precision for the radar altimeter and a large range of detected data, and can intuitively find signal distortion, leakage and the like.
Description
技术领域technical field
本发明属于雷达高度表的检测方法，尤其涉及雷达高度表回波模拟器等效高度参数的检测方法。The invention belongs to a detection method of a radar altimeter, in particular to a detection method of an equivalent height parameter of a radar altimeter echo simulator.
背景技术Background technique
现有的高度模拟器的检测是用天量网络分析仪法，但当等效高度大于2000米后，则无法测试。Existing height simulators are detected by using the Tianquan network analyzer method, but when the equivalent height is greater than 2000 meters, it cannot be tested.
发明内容Contents of the invention
本发明提供一种雷达高度模拟器的检测方法，本发明通过简单的仪器仪表实现较大衰减信号等效高度的高精度测量。The invention provides a detection method of a radar height simulator. The invention realizes high-precision measurement of the equivalent height of a relatively large attenuation signal through simple instruments and meters.
一种雷达高度模拟器的检测方法，其特征在于，由以下列几个步骤：A kind of detection method of radar height simulator is characterized in that, by following several steps:
测量等效高度检测系统的延迟时间：让双通道延迟脉冲发生器发出一个脉冲信号，分A路、B路输出，输出的B路脉冲信号直接输入到示波器的1通道，输出的A路脉冲信号输入到微波信号源上，微波信号源将脉冲信号变成脉冲调制信号输出，经过射频放大器放大和放大检波器检波后得到脉冲信号，该脉冲信号输入到示波器的2通道，A路脉冲信号到达示波器2通道比B路脉冲信号到达示波器1通过的时间延迟，记录下延迟时间t1；Measure the delay time of the equivalent height detection system: Let the dual-channel delay pulse generator send out a pulse signal, which is divided into A-channel and B-channel output. The output B-channel pulse signal is directly input to the 1-channel of the oscilloscope, and the output A-channel pulse signal Input to the microwave signal source, the microwave signal source converts the pulse signal into a pulse modulation signal output, after being amplified by the radio frequency amplifier and detected by the amplified detector, the pulse signal is obtained, the pulse signal is input to the 2 channel of the oscilloscope, and the pulse signal of channel A reaches the oscilloscope 2 channels are delayed compared to the time when the channel B pulse signal reaches the oscilloscope 1, and record the delay time t 1 ;
校正等效高度检测系统：在双通道延迟脉冲发生器上设定B路脉冲信号延迟时间t1，让双通道延迟脉冲发生器发出一个脉冲信号，分A路、B路输出，输出的B路脉冲信号经延迟时间t1后直接输入示波器的1通道，输出的A路脉冲信号输入到微波信号源上，微波信号源将脉冲信号变成脉冲调制信号输出，经过射频放大器放大和放大检波器检波后得到脉冲信号，将该脉冲信号输入到示波器2通道，使A路脉冲信号和B路脉冲信号同时到达示波器的1通道和2通道；Calibrate the equivalent height detection system: set the delay time t 1 of the pulse signal of channel B on the dual-channel delayed pulse generator, let the dual-channel delayed pulse generator send out a pulse signal, which is divided into channel A and channel B for output, and the output channel B The pulse signal is directly input to channel 1 of the oscilloscope after a delay time of t1 , and the output channel A pulse signal is input to the microwave signal source, and the microwave signal source converts the pulse signal into a pulse modulation signal output, which is amplified by the radio frequency amplifier and detected by the amplified detector Finally, the pulse signal is obtained, and the pulse signal is input to the 2 channel of the oscilloscope, so that the A channel pulse signal and the B channel pulse signal reach the 1 channel and 2 channel of the oscilloscope at the same time;
测量设定高度的待测的雷达高度模拟器延迟时间：将待测的雷达高度模拟器接入射频放大器和放大检波器之间，给雷达高度模拟器设定高度值H，让已设定B路脉冲信号经延迟t1的双通道延迟脉冲发生器发出一个脉冲信号，分A路、B路输出，输出的B路脉冲信号经延迟时间t1后直接输入示波器的1通道，输出的A路脉冲信号输入到微波信号源上，微波信号源将脉冲信号变成脉冲调制信号后输出，经过射频放大器放大、待测的雷达高度模拟器延时和放大检波器检波后得到脉冲信号，将该脉冲信号输入到示波器2通道，A路脉冲信号到达示波器2通道比B路脉冲信号到达示波器的1通道时间延迟，记录下延迟时间t2；Measure the delay time of the radar altitude simulator to be tested at the set altitude: connect the radar altitude simulator to be tested between the RF amplifier and the amplifying detector, set the altitude value H for the radar altitude simulator, and let the set B The pulse signal of channel B sends out a pulse signal through the dual-channel delay pulse generator with a delay of t1 , and outputs it in channel A and channel B. The output channel B pulse signal is directly input into channel 1 of the oscilloscope after a delay time of t1, and the output channel A The pulse signal is input to the microwave signal source, and the microwave signal source converts the pulse signal into a pulse modulation signal and then outputs it. The pulse signal is obtained after being amplified by the radio frequency amplifier, delayed by the radar height simulator to be tested, and detected by the amplified detector. The signal is input to channel 2 of the oscilloscope, the pulse signal of channel A arrives at channel 2 of the oscilloscope, and the time delay of the pulse signal of channel B arriving at channel 1 of the oscilloscope is delayed, and the delay time t2 is recorded;
计算出待测雷达高度模拟器的误差：把记录的延迟时间t2作为雷达回波信号延迟时间，通过已知公式计算出相应高度值h，相应高度值h与设定高度值H之间的差值即待测雷达高度模拟器的误差。Calculate the error of the radar height simulator to be tested: take the recorded delay time t2 as the delay time of the radar echo signal, calculate the corresponding height value h through a known formula, and the distance between the corresponding height value h and the set height value H The difference is the error of the radar altitude simulator to be tested.
本发明对雷达高度表检测精度高、检测的数据范围大，能直观发现信号失真、泄漏等情况。The invention has high detection precision for the radar altimeter and a large range of detected data, and can intuitively find signal distortion, leakage and the like.
附图说明Description of drawings
图1、用本发明测量等效高度检测系统的延迟时间脉冲信号的路线图；Fig. 1, measure the route map of the delay time pulse signal of equivalent height detection system with the present invention;
图2、用本发明测量已设定高度的雷达高度模拟器的延迟时间的脉冲信号路线图；Fig. 2, measure the pulse signal roadmap of the delay time of the radar altitude simulator of setting altitude with the present invention;
图3、本发明步骤1)在示波器上的波形示意图；Fig. 3, step 1 of the present invention) waveform schematic diagram on the oscilloscope;
图4、本发明步骤2)在示波器上的波形示意图。Fig. 4 is a schematic diagram of waveforms on an oscilloscope in step 2) of the present invention.
具体实施方式Detailed ways
一种雷达高度模拟器的检测方法，其特征在于，由以下列几个步骤：A kind of detection method of radar height simulator is characterized in that, by following several steps:
测量等效高度检测系统的延迟时间：让双通道延迟脉冲发生器发出一个脉冲信号，分A路、B路输出，输出的B路脉冲信号直接输入到示波器的1通道，输出的A路脉冲信号输入到微波信号源上，微波信号源将脉冲信号变成脉冲调制信号输出，经过射频放大器放大和放大检波器检波后得到脉冲信号，该脉冲信号输入到示波器的2通道，A路脉冲信号到达示波器2通道比B路脉冲信号到达示波器1通过的时间延迟，记录下延迟时间t1；Measure the delay time of the equivalent height detection system: Let the dual-channel delay pulse generator send out a pulse signal, which is divided into A-channel and B-channel output. The output B-channel pulse signal is directly input to the 1-channel of the oscilloscope, and the output A-channel pulse signal Input to the microwave signal source, the microwave signal source converts the pulse signal into a pulse modulation signal output, after being amplified by the radio frequency amplifier and detected by the amplified detector, the pulse signal is obtained, the pulse signal is input to the 2 channel of the oscilloscope, and the pulse signal of channel A reaches the oscilloscope 2 channels are delayed compared with the time for channel B pulse signal to reach oscilloscope 1, and record the delay time t 1 ;
校正等效高度检测系统：在双通道延迟脉冲发生器上设定B路脉冲信号延迟时间t1，让双通道延迟脉冲发生器发出一个脉冲信号，分A路、B路输出，输出的B路脉冲信号经延迟时间t1后直接输入示波器的1通道，输出的A路脉冲信号输入到微波信号源上，微波信号源将脉冲信号变成脉冲调制信号输出，经过射频放大器放大和放大检波器检波后得到脉冲信号，将该脉冲信号输入到示波器2通道，使A路脉冲信号和B路脉冲信号同时到达示波器的1通道和2通道；Calibrate the equivalent height detection system: set the delay time t1 of the pulse signal of channel B on the dual-channel delayed pulse generator, let the dual-channel delayed pulse generator send out a pulse signal, which is divided into channel A and channel B for output, and the output channel B pulse The signal is directly input to channel 1 of the oscilloscope after a delay time of t1 , and the output channel A pulse signal is input to the microwave signal source, and the microwave signal source converts the pulse signal into a pulse modulation signal output, after being amplified by the radio frequency amplifier and detected by the amplifying detector Get the pulse signal, input the pulse signal to the 2 channel of the oscilloscope, so that the A channel pulse signal and the B channel pulse signal reach the 1 channel and 2 channel of the oscilloscope at the same time;
测量设定高度的待测的雷达高度模拟器延迟时间：将待测的雷达高度模拟器接入射频放大器和放大检波器之间，给雷达高度模拟器设定高度值H，让已设定B路脉冲信号经延迟t1的双通道延迟脉冲发生器发出一个脉冲信号，分A路、B路输出，输出的B路脉冲信号经延迟时间t1后直接输入示波器的1通道，输出的A路脉冲信号输入到微波信号源上，微波信号源将脉冲信号变成脉冲调制信号后输出，经过射频放大器放大、待测的雷达高度模拟器延时和放大检波器检波后得到脉冲信号，将该脉冲信号输入到示波器2通道，A路脉冲信号到达示波器2通道比B路脉冲信号到达示波器的1通道时间延迟，记录下延迟时间t2；Measure the delay time of the radar altitude simulator to be tested at the set altitude: connect the radar altitude simulator to be tested between the RF amplifier and the amplifying detector, set the altitude value H for the radar altitude simulator, and let the set B The pulse signal of the channel is sent out by the dual-channel delay pulse generator with a delay of t1, and is divided into channel A and channel B for output. The output channel B pulse signal is directly input into channel 1 of the oscilloscope after a delay time of t1 , and the output channel A pulse is The signal is input to the microwave signal source, and the microwave signal source converts the pulse signal into a pulse modulation signal and then outputs it. After being amplified by the RF amplifier, delayed by the radar height simulator to be tested, and detected by the amplified detector, the pulse signal is obtained. The pulse signal Input to channel 2 of the oscilloscope, the pulse signal of channel A arrives at channel 2 of the oscilloscope, and the pulse signal of channel B arrives at channel 1 of the oscilloscope with a delay, record the delay time t 2 ;
计算出待测雷达高度模拟器的误差：把记录的延迟时间t2作为雷达回波信号延迟时间，通过已知公式计算出相应高度值h，相应高度值h与设定高度值H之间的差值即待测雷达高度模拟器的误差。Calculate the error of the radar height simulator to be tested: take the recorded delay time t2 as the delay time of the radar echo signal, calculate the corresponding height value h through a known formula, and the distance between the corresponding height value h and the set height value H The difference is the error of the radar altitude simulator to be tested.
本发明提出的测量方法结合实例及附图详细说明如下：The measuring method that the present invention proposes is described in detail as follows in conjunction with example and accompanying drawing:
等效高度测试系统由微波信号源，双通道延迟脉冲发生器和示波器组成，其测试框图如图1所示。微波信号源工作于外脉冲调制状态，双通道脉冲延迟发生器的A路信号作为微波信号源的调制脉冲信号，B路信号作为同步信号输入示波器1通道。在不连入被测高度模拟器的情况下，微波信号源将脉冲信号变成脉冲调制信号输出，经过射频放大器放大和放大检波器检波后得到脉冲信号，该脉冲信号输入到示波器的2通道。调整双通道脉冲发生器A、B通道的相对延迟使在示波器的两路信号同步(延迟为0)，记下此时双通道脉冲发生器A、B通道的相对延迟。The equivalent height test system consists of a microwave signal source, a dual-channel delayed pulse generator and an oscilloscope, and its test block diagram is shown in Figure 1. The microwave signal source works in the state of external pulse modulation, the A-channel signal of the dual-channel pulse delay generator is used as the modulated pulse signal of the microwave signal source, and the B-channel signal is input into the 1 channel of the oscilloscope as a synchronous signal. In the case of not connected to the measured height simulator, the microwave signal source converts the pulse signal into a pulse modulation signal output, and the pulse signal is obtained after being amplified by the radio frequency amplifier and detected by the amplifying detector, and the pulse signal is input to the 2 channel of the oscilloscope. Adjust the relative delay of the A and B channels of the dual-channel pulse generator to synchronize the two signals on the oscilloscope (the delay is 0), and record the relative delay of the A and B channels of the dual-channel pulse generator at this time.
接入被校高度模拟器后，经放大检波输入到示波器2通道。由于A路信号通过高度模拟器后产生延迟，因此示波器上显示两路波形。通过调整双通道脉冲发生器两路脉冲信号的相对延迟时间来抵偿脉冲调制信号通过高度模拟器后发生的延时，使两路脉冲信号同步，记下此时双通道延迟脉冲发生器A、B通道的相对延迟时间。After connecting to the calibrated height simulator, it is input to channel 2 of the oscilloscope through amplification and detection. Because the signal of channel A is delayed after passing through the altitude simulator, two waveforms are displayed on the oscilloscope. By adjusting the relative delay time of the two-way pulse signal of the dual-channel pulse generator to compensate for the delay of the pulse modulation signal after passing through the height simulator, the two-way pulse signals are synchronized, and record the dual-channel delayed pulse generator A and B at this time The relative latency of the channel.
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| CN110987015A (en) * | 2019-12-17 | 2020-04-10 | 中航贵州飞机有限责任公司 | Detection method of multipurpose airplane radio altitude simulator |
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