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Method for detecting and tracking target with discontinuous characteristic by passive sensing system

A technology for detection, tracking and sensing systems, applied in radio wave measurement systems, measurement devices, using re-radiation, etc., can solve discontinuous characteristic modeling, does not consider signal discontinuous characteristic estimation, and cannot directly apply discontinuous target tracking and other problems, to achieve the effect of good practicability, simple solution process and flexible application

Active Publication Date: 2019-07-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

For this type of typical target measurement discontinuity, since its discontinuous characteristics are often unknown and cannot be modeled by a known random process, the measurement discontinuity model in the proposed algorithm cannot be directly applied For the tracking of such discontinuous targets, it does not consider the estimation of the discontinuous characteristics of the signal

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  • Method for detecting and tracking target with discontinuous characteristic by passive sensing system
  • Method for detecting and tracking target with discontinuous characteristic by passive sensing system
  • Method for detecting and tracking target with discontinuous characteristic by passive sensing system

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Embodiment Construction

[0043] In order to facilitate those skilled in the art to understand the technical content of the present invention, the content of the present invention will be further explained below in conjunction with the accompanying drawings.

[0044] Such as figure 1 Shown is the scheme flow chart of the present invention, and a kind of method for the detection and tracking of the object with discontinuous characteristic for the passive sensing system of the present invention, comprises the following steps:

[0045] S1. The division of the discontinuous signal period is defined as figure 2 As shown, a schematic diagram of the m-th signal period is given: the division of a non-continuous signal period is defined as: the target actively transmits signals, and the duration of its continuous transmission signals is called the signal pulse width w. The time interval is called a signal period p; the pulse width is greater than or equal to a system sampling time T.

[0046] In this embodim...

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Abstract

The invention discloses a method for detecting and tracking a target with a discontinuous characteristic by a passive sensing system, is applied to the technical field of target detection and trackingof the passive sensing system, and aims at the problems that an existing technology is not suitable for tracking the discontinuous target and does not consider estimation of the discontinuous characteristic of a signal. The method comprises the following steps of firstly, carrying out discontinuous period division and adaptively estimating the discontinuous characteristic of the target in combination with a signal period sliding window according to latest received intermittent measurement of the sensor; secondly, synchronously determining an update moment of a target state, and deriving a variable-period filtering formula under a Bayesian framework to obtain a posterior probability density function related to the target state; and finally, estimating the target state through a minimum mean square error criterion. According to the method, joint estimation of the discontinuous target state and the discontinuous characteristic thereof can be achieved.

Description

technical field [0001] The invention belongs to the field of passive sensor system target detection and tracking, in particular to a detection and tracking technology for targets with discontinuous characteristics. Background technique [0002] The passive sensing system itself does not emit signals, but only passively receives the information carried by the radiation, emission or refraction signals from the target, and then realizes the detection and tracking of the target through signal processing and extraction, which has high concealment and target recognition. Strong ability and other advantages can enhance the anti-reconnaissance, anti-jamming, and anti-software and hard-killing capabilities of the system in the electronic station. In future electronic countermeasures and modern intelligence systems, passive sensing mechanisms will play an increasingly important role. [0003] In the actual passive detection system application, due to the blockage of the signal transm...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/00G01S3/00G01S11/00
CPCG01S3/00G01S5/00G01S11/00
Inventor 杨晓波付玲枝库飞龙蒋歆玥易伟李溯琪孔令讲
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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