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An Equivalent Simulation Method of Radio Frequency Radiation Simulation Broadband Pulse Radar Imaging

A wideband pulse and radar imaging technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of pulse radar signal transmission and reception occlusion, segmentation sparse, etc., and achieve the effect of improving reconstruction performance and performance.

Active Publication Date: 2019-10-11
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: use random intermittent transmission and reception in the microwave anechoic chamber to obtain segmented and sparse target echoes, solve the problem of pulse radar signal transmission and reception occlusion, further combine compressed sensing, use the parameters of intermittent transmission and reception control signals and Dechirp The processing method is to build a measurement matrix for intermittent sending and receiving echoes, and realize the reconstruction of the target high-resolution range image by solving the optimization problem

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  • An Equivalent Simulation Method of Radio Frequency Radiation Simulation Broadband Pulse Radar Imaging
  • An Equivalent Simulation Method of Radio Frequency Radiation Simulation Broadband Pulse Radar Imaging
  • An Equivalent Simulation Method of Radio Frequency Radiation Simulation Broadband Pulse Radar Imaging

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings. The present invention is a kind of radio frequency radiation simulation broadband pulse radar imaging equivalent simulation method, such as Figure 8 As shown, the steps are as follows:

[0028] The first step is to intermittently send and receive to obtain target echo segmented sparse observation data.

[0029] The control signal sent and received randomly and intermittently can be written as

[0030]

[0031] Among them, δ( ) is the impact function; n is the number of short pulses sent and received; τ n is the working period of the transmitting channel; is the cycle of each "intermittent" sending and receiving. It is necessary to accumulate the first n sending and receiving cycles to obtain the nth sending and receiving time, and k≤n; * means convolution operation, rect( ) is a rectangular function, and its expression is

[0032]

[0033] make Indicates th...

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Abstract

The invention discloses a radio frequency radiation type simulation broadband pulse radar imaging equivalent simulation method. The radio frequency radiation type simulation broadband pulse radar imaging equivalent simulation method comprises steps that 1, a target echo signal is acquired; 2, a compressed sensing measuring matrix is constructed; 3, an intermittent transmitting-receiving echo segmented sparse observation model is established; 4, a target high resolution range profile is reconstructed. The radio frequency radiation type simulation broadband pulse radar imaging equivalent simulation method is advantageous in that 1, a transmitting-receiving signal shielding problem of a pulse radar in a microwave darkroom in a transmitting-receiving common antenna system is solved; 2, the construction of the target echo segmented sparse observation measuring matrix is realized; 3, the intermittent transmitting-receiving echo segmented sparse observation model is established; 4, the accurate reconstruction of the peak value position and the amplitude of the target high resolution range profile is realized.

Description

【Technical field】 [0001] The invention relates to an equivalent simulation method of radio frequency radiation simulation broadband pulse radar imaging, which belongs to the field of radiation simulation broadband radar imaging simulation, and specifically relates to the method of simulating pulse system radar signals in a microwave anechoic chamber to obtain target high-resolution distance images and two-dimensional images Processing technology, especially the method of realizing pulse system radar target detection, simulation of the whole imaging process and recovery of high-resolution range image in microwave anechoic chamber. 【Background technique】 [0002] Hardware-in-the-loop (HWIL) simulation in microwave anechoic chamber can simulate the whole process of radar signal processing, among which the radiation simulation method has the advantages of controllable environment construction, flexible test development, high fidelity and low cost It has become an important metho...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/40
Inventor 刘进刘晓斌艾小锋赵锋杨建华李永祯冯德军王雪松肖顺平
Owner NAT UNIV OF DEFENSE TECH
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