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Bistatic radar radio frequency stealth waveform optimization design method

A bistatic radar and radio frequency stealth technology, which is applied to radio wave measurement systems, instruments, etc., to achieve the effect of improving radio frequency stealth performance and satisfying delay estimation performance

Pending Publication Date: 2019-11-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

however, no radio frequency stealth method for bistatic radar systems is known in the prior art

Method used

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  • Bistatic radar radio frequency stealth waveform optimization design method
  • Bistatic radar radio frequency stealth waveform optimization design method
  • Bistatic radar radio frequency stealth waveform optimization design method

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Embodiment Construction

[0028] This specific embodiment discloses a bistatic radar radio frequency stealth waveform optimization design method, including the following steps:

[0029] S1: Obtain the frequency response H of the target detection channel on the kth subcarrier of the bistatic radar system based on prior knowledge rad [k] with bistatic channel frequency response H bis [k];

[0030] S2: Construct the Cramer-Rao lower bound expression for target time delay estimation to characterize the parameter estimation performance of the bistatic radar system;

[0031] S3: Estimating the Cramer-Rao lower bound threshold δ according to the preset target time delay CRLB and the upper limit of radar transmit power P on the kth subcarrier max,k , to establish the bistatic radar radio frequency stealth waveform optimization design model;

[0032] S4: Using the linear programming algorithm to solve the bistatic radar RF stealth waveform optimization design model.

[0033] The bistatic radar system in st...

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Abstract

The invention discloses a bistatic radar radio frequency stealth waveform optimization design method. The method comprises the following steps that S1, a target detection channel frequency response Hrad[k] and a bistatic channel frequency response Hbis[k] on the kth subcarrier of a bistatic radar system are obtained; S2, a target time delay estimation Cramer-Rao lower bound expression for representing the parameter estimation performance of the bistatic radar system is constructed; S3, according to a preset target time delay, a Cramer-Rao lower bound threshold deltaCRLB and the radar transmitting power upper limit Pmax on the kth subcarrier are estimated, and a bistatic radar radio frequency stealth waveform optimization design models is built; S4, the bistatic radar radio frequency stealth waveform optimization design models is solved. The method meets the requirement of the given target time delay estimation performance, the total transmitting power of the bistatic radar system is effectively controlled, and the radio frequency stealth performance of the bistatic radar system is effectively improved.

Description

technical field [0001] The invention relates to the field of radar waveform design, in particular to a bistatic radar radio frequency stealth waveform optimization design method. Background technique [0002] The transmitter and receiver of the bistatic radar system are distributed, and the radar signal emitted by it is irradiated on the target, and the scattered echo of the target is received by the space-separated receiver for detection and processing. Since each receiver in the system can receive the target echo signal, the performance of target parameter estimation in the bistatic radar system can be improved by combining and estimating the redundant data. [0003] With the rapid development of advanced materials and signal processing technology, various advanced enemy passive detection systems and passive detection modes pose an increasingly severe threat to the own radar system. Radio frequency stealth technology is to shorten the effective distance of the enemy's pas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/38
CPCG01S7/38
Inventor 时晨光王奕杰汪飞李海林周建江夏伟杰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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