A passive target tracking method based on interactive multi-model
An interactive multi-model, target tracking technology, applied in the field of passive sonar signal processing target tracking, can solve problems such as difficulty in matching motion models, inability to effectively deal with multi-target crossover problems, insensitivity to mistracking crossover problems, etc., and achieve good robustness. and tracking ability, broad applicability and robustness, avoidance of nonlinearity and effects of weak observability problems
Active Publication Date: 2021-04-27
THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In the passive tracking method represented by Kalman filter, which is widely studied at present, the state equation is usually based on the target motion model. Due to the nonlinearity of the system and the lack of observational information, it is difficult to match the established motion model with the real target trajectory. cause filter divergence
Many scholars establish state equations based on orientation and orientation change rate, but the problem of mistracking is more serious in data association and is not sensitive to crossover problems, so it cannot effectively deal with multi-objective crossover problems
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0032] The present invention will be described in detail below in conjunction with accompanying drawing:
[0033] (1) Carry out data association between the target detection result of the current spatial energy spectrum and the existing track. Assume that Z(k) represents the set of candidate detection results that fall into the associated gate at time k, m k Indicates the number of candidate measurements in the associated gate at time k. Z k Expressed as the cumulative set of all measurements up to time k, ie In the case of continuous hypothetical association of target candidate measurements through the association gate, the l-th measurement sequence from the beginning until k time can be given as
[0034] (2) Calculate the likelihood probability of multiple hypotheses such as k at the current moment, and keep the hypothesis with the highest track quality. If the hypothesis with the highest track quality is less than a certain threshold, then the prediction mechanism ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a passive target tracking method based on interactive multi-model, and belongs to the technical field of passive sonar signal processing and passive target tracking. Due to false alarms and multi-target intersections, tracking loss and mistracking are prone to occur during tracking. The tracking method based on the target motion model involves the linearization of nonlinear equations, which is difficult. This algorithm adopts the interactive multi-model method to realize the data association during tracking. Each model does not involve the nonlinearization process, and uses the prediction method to solve the problem of measurement loss, so as to achieve the purpose of track maintenance during tracking. This algorithm can be used for single-array passive target tracking in azimuth only, and is not restricted by scanning beams and detection methods, and can be tracked in real time, and has wide adaptability.
Description
technical field [0001] The invention belongs to the technical field of passive sonar signal processing target tracking, and mainly relates to a passive target tracking method based on interactive multi-models. Background technique [0002] Detection, tracking, identification, and positioning are the organic and unified key parts of sonar signal processing. Tracking usually follows detection and is a prerequisite for identification and localization. It plays a pivotal role in the entire sonar system. With the development of underwater target stealth technology and underwater acoustic countermeasure technology, especially the emergence of "quiet" submarines and underwater unmanned submersibles, they pose a serious threat to large ports, docks, and deep-sea military platform bases. The comprehensive performance of the passive sonar system puts forward higher requirements. Secondly, with the development of signal processing technology and sonar equipment, the detection range ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01S15/66
CPCG01S15/66
Inventor 权恒恒周彬陈越超徐晓男
Owner THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP