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Method for controlling radiation of radar on basis of radio frequency stealth in cooperating process of passive sensors

A passive sensor and radio frequency stealth technology, applied in instruments, radio wave measurement systems, etc., can solve the problem of low detection accuracy of passive sensors, achieve the effect of improving radio frequency stealth performance, good tracking accuracy, and reducing the number of radiation

Inactive Publication Date: 2013-09-04
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology

Since the detection accuracy of passive sensors is lower than that of radars with active radiation, when passive sensors and radars track targets at the same time and assuming that the detection distances of passive sensors and radars are roughly the same, how to control the cooperation of passive sensors is how to determine Radar's radiation moment is a problem with existing technology

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  • Method for controlling radiation of radar on basis of radio frequency stealth in cooperating process of passive sensors
  • Method for controlling radiation of radar on basis of radio frequency stealth in cooperating process of passive sensors
  • Method for controlling radiation of radar on basis of radio frequency stealth in cooperating process of passive sensors

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specific Embodiment approach

[0032] Such as figure 1 Shown, the specific embodiment of the present invention is as follows:

[0033] 1) Determine the target tracking model

[0034] The state equation of the target when tracking at time k is:

[0035] x k =FX k-1 +U k-1

[0036] The observation equation is:

[0037] Z k =H(X k )+V k

[0038] In the formula, X k = [ x k , x · k , y k , y · k ] is the motion state vector of the target, with Corresponding to the distance and speed in the X and Y directions respectively; U k-1 and V k are the process noise and observation noise matrix respectively; F is the state transition matrix, H(·) is the observation function, Z k is the observation value of the...

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Abstract

The invention discloses a method for controlling radiation of a radar on the basis of radio frequency stealth in the cooperating process of passive sensors. The adopted method comprises the following steps of: measuring the maneuver characteristic when a target moves by calculating an innovation vector in the tracking process; measuring uncertainty of a state of the target by calculating covariance matrices before and after filtering; and finally, according to the maneuver characteristic when the target moves and the uncertainty of the state, determining a radiation moment of the radar. According to the invention, the radiation moment of the radar is designed in the cooperating process of the passive sensors. According to the invention, when the radar has higher tracking accuracy, radiation times of the radar can be further reduced, and radio frequency stealth performance of the radar can be further improved.

Description

technical field [0001] The invention belongs to the field of radar signal processing, and specifically relates to a radar radiation control method based on radio frequency stealth when passive sensors cooperate, and more particularly relates to a radar radiation time control method based on radio frequency stealth when passive sensors cooperate to track. Background technique [0002] Radar radio frequency stealth technology refers to the stealth technology that radar resists radio frequency passive interception, sorting, identification, and tracking, so as to reduce the interception distance and probability of interception of ships by passive detection systems. [0003] Passive sensors can detect a long distance without emitting electromagnetic waves, and have strong concealment. In addition to improving its radio frequency stealth performance by reducing the radiation time and power of radar when it works alone, the cooperation of passive sensors is also one of the ways to ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02
Inventor 张贞凯徐兰袁伟杨永红
Owner JIANGSU UNIV OF SCI & TECH
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