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A high-precision tracking and filtering method for time-of-flight positioning system targets

A technology of time difference positioning and tracking filtering, which is applied in the directions of instruments, computing, character and pattern recognition, etc., can solve the problem of large amount of calculation, and achieve the effect of improving efficiency, performance and efficiency

Active Publication Date: 2019-07-16
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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  • Application Information

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Problems solved by technology

This requires the multi-target tracking algorithm to be real-time, and the traditional data association algorithm has a large amount of calculation. Therefore, how to reduce the complexity of the tracking algorithm while maintaining the tracking accuracy has become a research hotspot.

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  • A high-precision tracking and filtering method for time-of-flight positioning system targets
  • A high-precision tracking and filtering method for time-of-flight positioning system targets
  • A high-precision tracking and filtering method for time-of-flight positioning system targets

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Embodiment Construction

[0012] The present invention will be described below in conjunction with the accompanying drawings. It should be understood that the accompanying drawings described herein are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0013] The present invention is a high-precision tracking and filtering method for a time-difference positioning system target. The flow chart is as follows: figure 1 shown, including the following steps:

[0014] s1. Measurement data formation, running complex signal time difference positioning program, output time difference positioning data including target motion parameters, target attributes, target type and time series of measurement, to target management cache;

[0015] s2. Maneuver detection, assuming the target motion model, make some detections on the target maneuver through the change of the detection residual, so that the filtering algorithm can be adjusted accordingly, so as to b...

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Abstract

The invention relates to a high-precision tracking and filtering method for a time-difference positioning system target, which belongs to the field of passive positioning. It is mainly used in time-difference positioning system to realize high-precision tracking of maneuvering targets. The high-precision tracking and filtering processing of time difference positioning targets is mainly divided into measurement data formation, maneuvering target model, maneuvering detection, adaptive filtering and prediction, tracking gate rules, tracking coordinate system and selection of filtering state variables. In the process of target tracking and filtering, the processing method of first searching the target, then performing time difference positioning and target track tracking, combined with real-time state estimation algorithm and data association algorithm, realizes high-precision tracking and filtering of time difference positioning targets, which is remarkable. Improve the stability of time-difference positioning system for multi-target tracking.

Description

technical field [0001] The invention belongs to the passive positioning technology in the technical field of electronic signal reconnaissance. Background technique [0002] Maneuvering target tracking is a fundamental problem in both defense and civilian domains. Maneuvering target tracking is to filter the target maneuvering motion signal data received continuously by the detector corresponding to different observation sets produced by various uncertain information sources, and to estimate the target state parameters of the maneuvering target accordingly. The so-called maneuver refers to the movement of the target to perform a certain tactical intention or to change the original law due to unplanned reasons, such as turning, diving, sliding, climbing, serpentine, speeding up, slowing down, etc. The core of maneuvering target tracking is to solve the problem of stable and accurate tracking under the condition of target maneuvering. [0003] As early as the 1950s, the basic...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62G06K9/46G06K9/40
CPCG06V10/30G06V10/40G06F18/213G06F18/214
Inventor 班书生严波薛帆
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND