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Radar device LFM pulse compression network group delay curve generation platform and method

A pulse compression and curve generation technology, applied in radio wave measurement systems, instruments, etc., to solve problems such as the inability to generate group delay curves

Active Publication Date: 2019-09-20
BEIJING INST OF REMOTE SENSING EQUIP
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  • Summary
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for generating a radar equipment LFM pulse compression network group delay curve, to solve the problem that the commonly used pulse compression network group delay curve generation method cannot generate a group delay curve when the time width is unknown

Method used

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Embodiment

[0022] The invention proposes a method for generating a radar equipment LFM pulse compression network group delay curve, the steps of which are: performing cache processing on the discrete data of the multi-time-width LFM signal to form cache data; performing discrete Hilbert transform on the cache data; generating Group delay curves of a multi-time-width LFM pulse compression network.

[0023] Wherein, the discrete data of the multi-time width LFM signal is buffered, and the formation of the buffer data includes: using a rectangular window to buffer the discrete data of a frame containing the multi-time width LFM signal to form the buffer data x(n), and the data rate is f s , wherein, n is the time-domain data point index value, n=1,2,...,N, and N is the length of the cached data x(n). The width of the rectangular window ensures that the signal with the largest time width in the multi-time width LFM signal is within the rectangular window.

[0024] Wherein, performing discre...

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Abstract

The invention discloses a radar device LFM pulse compression network group delay curve generation platform and method, which are implemented through a data caching module, a discrete Hilbert transform module and a group delay curve generation module. The data caching module caches the discrete data of a multi-timewidth LFM signal to form cached data. The discrete Hilbert transform module performs discrete Hilbert transform on the cached data. The group delay curve generation module generates the group delay curve of a multi-timewidth LFM pulse compression network. According to the invention, the problem that a common pulse compression network group delay curve generation method cannot generate the group delay curve when the time width is unknown is solved.

Description

technical field [0001] The invention relates to the technical field of radar equipment, in particular to a method for generating a radar equipment LFM pulse compression network group delay curve. Background technique [0002] During the operation of the radar equipment, it is necessary to generate the group delay curve of the multi-time-width LFM pulse compression network under the condition that the center frequency and FM bandwidth of the multi-time-width LFM signal are known and the time width is unknown. A linear frequency modulation (LFM) signal means that the frequency of the signal is swept up or down linearly within the pulse width; the group delay of the LFM pulse compression network refers to the delay of the energy of the spectral components of the LFM signal. The commonly used method for generating the group delay curve of the pulse compression network performs an integral operation on the phase-frequency characteristics of the LFM pulse compression network. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02
CPCG01S7/02
Inventor 段云鹏
Owner BEIJING INST OF REMOTE SENSING EQUIP
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