Sampling interval control method for multi-target tracking of networked radar based on radio frequency stealth
A multi-target tracking and networking radar technology, applied in the field of radar signal processing, to increase the sampling interval, meet the tracking accuracy, and improve the radio frequency stealth performance.
Active Publication Date: 2022-07-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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[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 performance of 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
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[0041] The present invention will be further described in detail below with reference to the accompanying drawings.
[0042] 1. Determine the target RCS and motion state prior information:
[0043] Consider by N R A networked radar system composed of phased array radars synchronized in time, space and frequency, is tracking N T (N T ≤N R ) At each moment of the target, each radar transmits a signal to radiate the target, and can only receive the target echo signal from its own radiation signal. At the same time, each radar can only track at most one target at each moment. According to the prior knowledge of each target's 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.
[0044] 2. Construct the measurement indicators of the tracking accuracy of each target:
[0045] The Bayesian Cramer-Rao Lower Bound (BCRLB) with radiation resour...
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The invention relates to a method for controlling a multi-target tracking sampling interval of a networked radar based on radio frequency stealth, and belongs to the technical field of radar signal processing. The method includes the following steps: (1) obtaining the RCS value of each target relative to different radars and the distance of each target relative to different radars according to the radar cross section database of each target and the prior knowledge of target motion state; The Bayesian Cramero lower bound of radiation resource parameter variables such as variable and sampling interval is used as a measure to characterize the tracking accuracy of each target; (3) According to the preset target q tracking accuracy threshold, a networked radar multi-target based on RF stealth is established The tracking sampling interval control model; (4) The multi-target tracking sampling interval control method of the networked radar based on radio frequency stealth is adopted, and the appropriate radar is selected at each moment to track the corresponding target with the maximum sampling interval. The invention improves the radio frequency stealth performance of the networked radar system in the multi-target tracking process.
Description
technical field [0001] The invention relates to a method for controlling a multi-target tracking sampling interval of a networked radar based on radio frequency stealth, and belongs to the technical field of radar signal processing. Background technique [0002] The heterogeneous passive detection system combines the advantages of high-gain and low-gain passive detection subsystems, and is an advanced passive detection system. It can quickly detect the radio frequency signal radiation characteristics of the warring parties, and guide the weapon to destroy the radio frequency signal platform of the warring parties. The existing radio frequency stealth theories and technologies can no longer meet the needs of our radar against the enemy's heterogeneous passive detection system. Therefore, it is urgent to 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 t...
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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