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Phased array radar angle measurement system based on positive and negative frequency modulation slope linear frequency modulation

A technology of phased array radar and frequency modulation slope, which is applied in the direction of radio wave measurement system, radio wave reflection/re-radiation, measurement device, etc., can solve the problems of low measurement frequency and precision, and achieve the effect of increasing the measurement frequency

Active Publication Date: 2019-07-26
BEIJING INST OF REMOTE SENSING EQUIP
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Problems solved by technology

[0003] The purpose of the present invention is to provide a phased array radar angle measurement system based on positive and negative frequency modulation slope linear frequency modulation, so as to solve the problem of low measurement frequency and accuracy of target angle

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  • Phased array radar angle measurement system based on positive and negative frequency modulation slope linear frequency modulation
  • Phased array radar angle measurement system based on positive and negative frequency modulation slope linear frequency modulation
  • Phased array radar angle measurement system based on positive and negative frequency modulation slope linear frequency modulation

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Embodiment approach

[0009] (1) Build a phased array radar angle measurement system based on positive and negative frequency modulation slope linear frequency modulation;

[0010] Specifically, the phased array radar angle measurement system based on positive and negative frequency modulation slope linear frequency modulation includes: radar echo acquisition module, echo signal weighting coefficient generation module, sum difference channel echo generation module, echo signal processing module, angle error Calculation module and target angle calculation module; Wherein,

[0011] The function of the radar echo acquisition module is to acquire the radar reflection echo of the target;

[0012] The function of the echo signal weighting coefficient generating module is: calculate the echo signal weighting coefficients of each sub-array (or array element) of the phased array antenna according to the steering angle of the phased array antenna;

[0013] The function of the sum-difference channel echo gen...

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Abstract

The invention provides a phased array radar angle measurement system based on positive and negative frequency modulation slope linear frequency modulation, wherein, the radar reflection echo signals are sequentially received according to the time sequence of the signals transmitted by the pulse radar system; the echo signal weighting coefficient generation module calculates and obtains an echo signal weighting coefficient of each subarray or array element of the phased array antenna according to the guide angle of the phased array antenna; the sum-difference channel echo generation module obtains a sum-difference channel echo by using each subarray or array element echo signal and a corresponding weighting coefficient; the echo signal processing module performs pulse compression on the sum-difference channel echo and detects a sum-difference channel complex signal at the distance of the target; the angular error calculation module calculates an angular error value corresponding to thepositive and negative frequency modulation slopes according to the amplitude comparison single pulse angle measurement method; and the target angle calculation module calculates the angle of the target.

Description

technical field [0001] The invention relates to the technical field of angle measurement of moving targets, in particular to a phased array radar angle measurement system based on positive and negative frequency modulation slope linear frequency modulation. Background technique [0002] The amplitude monopulse angle measurement method is widely used in the field of radar angle measurement of moving targets, but this method is easily affected by angular scintillation, which affects the measurement accuracy of the target angle. Therefore, in some applications that require high measurement accuracy of the target angle, it is necessary to increase the measurement frequency and accuracy of the target angle. Contents of the invention [0003] The purpose of the present invention is to provide a phased array radar angle measurement system based on positive and negative frequency modulation slope linear frequency modulation, so as to solve the problem of low measurement frequency ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/88
CPCG01S13/88
Inventor 马海忠闫雅琼陈常平
Owner BEIJING INST OF REMOTE SENSING EQUIP
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