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Simultaneous resolution of range ambiguity with ipphdf maneuvering multi-target tracking method

A multi-target tracking and distance ambiguity resolution technology, applied in the field of radar data processing, can solve the problems of target loss, fuzzy measurement data, target tracking, etc.

Active Publication Date: 2017-12-05
NAVAL AVIATION UNIV
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Problems solved by technology

[0008] The purpose of the present invention is to propose an improved particle probability hypothesis density filter (IPPHDF) mobile multi-target tracking method for solving range ambiguity at the same time, so as to solve the problem that the general PPHDF method is prone to target loss and cannot directly use the blur quantity when the detection probability is low. The problem of tracking the target with measured data

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Embodiment Construction

[0077] The IPPHDF method for simultaneously solving distance ambiguity proposed by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0078] Without loss of generality, set up a two-dimensional simulation scene, monitoring area S = [-60km, 60km] × [-60km, 60km], targets can appear and disappear randomly in the monitoring area, the average target appearance probability γ k = 0.2, the initial distribution D of the target appearance 0 subject to mean x 0 and covariance Q b normal distribution of , where

[0079]

[0080] The standard deviation of the process noise in the x direction and the y direction is 0.01km, the standard deviation of the process noise of the turning rate is 0.35rad / s, and the probability that the target persists is e k|k-1 = 0.95 and has nothing to do with the target state. The radar scanning period T=1s, can alternately use two different pulse repetition frequencies to work alternately, each pulse...

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Abstract

The invention discloses an IPPHDF maneuvering multi-target tracking method of simultaneously solving range ambiguities, suitable for a radar to track maneuvering multiple targets under the condition of ambiguous ranges. A multi-target tracking method based on PPHDF may easily lose a target when a target detection probability is lower, and can not directly utilize ambiguous survey data to track the target; in order to solve the problems, the IPPHDF maneuvering multi-target tracking method of simultaneously solving range ambiguities is provided, and has the advantages of simple structure, rapid calculation, and high adaptability for a strong non-linear non-Gaussian system; according to experiment simulation results of the embodiment, the method of the invention effectively removes the limitation of a PPHDF method, and possesses higher engineering application values and a brighter popularization prospect.

Description

technical field [0001] The present invention relates to a kind of radar data processing method, relate in particular to a kind of mobile multi-target tracking method under the ambiguous situation of radar ranging, applicable to high / medium pulse repetition frequency (H / MPRF) radar (such as airborne pulse Doppler) Radar, etc.) tracking of maneuvering multiple targets. Background technique [0002] With the rapid development of electromagnetic interference and other technologies and the emergence of a large number of various aircraft, the electromagnetic environment in which the radar is located has further deteriorated, and the measurement data that needs to be processed per unit time has increased sharply, which has brought severe challenges to traditional radar target detection and tracking. challenge. At the same time, in order to improve its own survival and defense penetration capabilities, the target usually conducts certain tactical maneuvers at any time, and its moti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/72
CPCG01S13/726
Inventor 谭顺成王国宏吴巍贾舒宜于洪波
Owner NAVAL AVIATION UNIV
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