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Multi-target tracking sampling interval control method for networking radars based on radio frequency stealth

A multi-target tracking and sampling interval technology, applied in the direction of re-radiation, radio wave reflection/re-radiation, instruments, etc., to achieve the effect of improving the radio frequency stealth performance

Active Publication Date: 2018-11-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] However, although the existing research results involve the sampling interval control problem of radar system single / multi-target tracking, on the premise of meeting a certain target tracking accuracy, maximizing the sampling interval of radar for target tracking improves the radar system in target tracking. RF stealth performance in the process, but the existing research results are only for single / multiple target tracking scenarios of single base phased array radar, which has certain limitations
There is no public report on the control method of multi-target tracking sampling interval of networked radar based on radio frequency stealth

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  • Multi-target tracking sampling interval control method for networking radars based on radio frequency stealth
  • Multi-target tracking sampling interval control method for networking radars based on radio frequency stealth
  • Multi-target tracking sampling interval control method for networking radars based on radio frequency stealth

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Embodiment Construction

[0043] The invention will be described in further detail below in conjunction with the accompanying drawings.

[0044] 1. Determine the target RCS and the prior information of the motion state:

[0045] Considered by N R A networked radar system composed of phased array radars synchronized in time, space and frequency, can track N T (N T ≤N R ) at each moment of the target, each radar emits a signal to radiate the target, and can only receive the target echo signal from its own radiation signal, and at the same time, each radar can only track one target at most at each time. According to the prior knowledge of each target radar cross section (Radar Cross Section, RCS) database and target motion state, the RCS value of each target relative to different radars and the distance of each target relative to different radars are obtained.

[0046] 2. Construct the measurement indicators of each target tracking accuracy:

[0047] Bayesian Cramer-Rao Lower Bound (BCRLB) with radia...

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Abstract

The invention relates to a multi-target tracking sampling interval control method for networking radars based on radio frequency stealth, and belongs to the technical field of radar signal processing.The method comprises the steps of (1) obtaining an RCS (Radar Cross Section) value of each target relative to different radars and the distance of each target relative to the different radars according to each target radar cross section database and target moving state prior knowledge; (2) constructing a Bayesian Cramer-Rao lower bound with radiation resource parameter variables such as a radar allocation variable and a sampling interval to serve as a measurement index for representing the tracking accuracy of each target; (3) establishing a multi-target tracking sampling interval control model for the networking radars based on the radio frequency stealth according to a preset tracking accuracy threshold C<q>max of a target q; and (4) selecting appropriate radars at each moment to perform tracking on corresponding targets at the maximum sampling interval by adopting the multi-target tracking sampling interval control method for the networking radars based on the radio frequency stealth. The radio frequency stealth performance of a networking radar system in the multi-target tracking process is improved according to the invention.

Description

technical field [0001] The invention relates to a radio frequency stealth-based networked radar multi-target tracking sampling interval control method, which belongs to the technical field of radar signal processing. Background technique [0002] The heterogeneous passive detection system has the advantages of both high-gain and low-gain passive detection subsystems, and is an advanced passive detection system. It can guide the weapon to destroy the belligerent's RF signal platform by quickly detecting the radio frequency signal radiation characteristics of the belligerent. The existing radio frequency stealth theory and technology can no longer meet the needs of our radar against the enemy's heterogeneous passive detection system. Therefore, it is urgent to further develop the radio frequency stealth theory of multi-radar cooperative detection and tracking, so that our networked radar system can be used in the future. Continue to have the advantage of radio frequency steal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/66G01S7/41
CPCG01S7/41G01S13/66
Inventor 时晨光汪飞李海林周建江夏伟杰孔莹莹
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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