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Airborne radar transmitted waveform selection method based on radio frequency stealth

An airborne radar and transmit waveform technology, applied in radio wave measurement systems, instruments, etc., to reduce the probability of interception and identification, and improve the performance of radio frequency stealth

Active Publication Date: 2019-04-23
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there is no radio frequency stealth-based airborne radar transmission waveform selection method in the prior art

Method used

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  • Airborne radar transmitted waveform selection method based on radio frequency stealth
  • Airborne radar transmitted waveform selection method based on radio frequency stealth
  • Airborne radar transmitted waveform selection method based on radio frequency stealth

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Embodiment Construction

[0029] This specific embodiment discloses a radio frequency stealth-based airborne radar transmission waveform selection method, such as figure 2 shown, including the following steps:

[0030] S1: Use the signal vector X received by the airborne radar at the current moment 1 and the received signal vector X at time k k The mutual information I(X 1 ;X k ) as the radar target tracking performance index;

[0031] S2: The KL distance between the joint probability density function of the airborne radar transmission signal and the interception receiver reception signal and the probability density function product of the airborne radar transmission signal and the interception receiver background noise is used as a measure of the interception performance and identification of the interception receiver Comprehensive performance indicators of performance;

[0032] S3: According to the given mutual information threshold I that characterizes the target tracking performance th , to ...

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Abstract

The invention discloses an airborne radar transmitted waveform selection method based on radio frequency stealth. The method comprises the following steps that S1, mutual information I(X1; Xk) betweena signal vector X1 received at the current moment and a signal vector Xk received at the k moment of an airborne radar are adopted to serve as radar target tracking property indexes; S2, KL distancebetween a joint probability density function of a airborne radar emission signal and an intercept receiver receiving signal and a probability density function product of the airborne radar emission signal and intercept receiver background noise is adopted to serve as a comprehensive property index to measure intercept receiver intercepting property and identifying property; S3, an airborne radar transmitted waveform selection model based on the radio frequency stealth is built according to a preset mutual information threshold Ith for representing the target tracking property; and S4, a wholewaveform self adaption selection process is completed according to the airborne radar transmitted waveform selection model based on the radio frequency stealth. The method provided by the invention improves the radio frequency stealth property of the airborne radar.

Description

technical field [0001] The invention relates to a radar emission waveform selection method, in particular to an airborne radar emission waveform selection method based on radio frequency stealth. Background technique [0002] Adaptive transmission waveform selection in the process of airborne radar target tracking can not only effectively improve the target tracking performance, but also reduce the interception performance of the enemy's intercept receiver, thus providing an effective way to improve the radio frequency stealth performance of airborne radar technical approach. [0003] However, there is no radio frequency stealth-based airborne radar transmission waveform selection method in the prior art. Contents of the invention [0004] Purpose of the invention: The purpose of the invention is to provide a radio frequency stealth-based airborne radar transmission waveform selection method, which can improve the radio frequency stealth performance of the airborne radar....

Claims

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Application Information

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IPC IPC(8): G01S7/282G01S7/41G01S7/38
CPCG01S7/282G01S7/38G01S7/41Y02A90/10
Inventor 时晨光仇伟汪飞李海林周建江夏伟杰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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