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A Phased Array Radar Angle Measurement System Based on Positive and Negative Frequency Modulation Slope Linear Frequency Modulation

A phased array radar, frequency modulation slope technology, applied in radio wave measurement systems, radio wave reflection/re-radiation, measurement devices and other directions, can solve the problems of low measurement frequency and accuracy, and achieve the effect of increasing the measurement frequency

Active Publication Date: 2021-05-07
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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  • A Phased Array Radar Angle Measurement System Based on Positive and Negative Frequency Modulation Slope Linear Frequency Modulation
  • A Phased Array Radar Angle Measurement System Based on Positive and Negative Frequency Modulation Slope Linear Frequency Modulation
  • A 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 present invention proposes 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 received sequentially according to the time sequence of the pulse radar system transmission signals; the echo signal weighting coefficients are generated The module calculates the weighting coefficients of the echo signals of each subarray or array element of the phased array antenna according to the steering angle of the phased array antenna; the sum and difference channel echo generation module uses each subarray or array element echo signal and the corresponding weighted coefficient coefficient to obtain the sum and difference channel echo; the echo signal processing module performs pulse compression on the sum and difference channel echo and detects the complex signal of the sum and difference channel at the distance of the target; the angle error calculation module measures the angle according to the ratio amplitude single pulse The method calculates and obtains the angular error value corresponding to the positive and negative frequency modulation slope; the target angle calculation module calculates the target angle.

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 Patents(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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