CS-Jerk model-based parameter adaptive maneuvering target tracking algorithm

A maneuvering target tracking and self-adaptive technology, applied in the direction of radio wave reflection/re-radiation, instruments, measurement devices, etc., can solve problems such as covariance matrix parameters, reduce model errors, enhance self-adaptive ability, and improve target tracking The effect of precision

Inactive Publication Date: 2017-09-15
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a parameter adaptive maneuvering target tracking algorithm based on the CS-Jerk model, to solve the problem that the traditional high maneuvering target CS-Jerk model needs to artificially set the process covariance matrix parameters

Method used

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  • CS-Jerk model-based parameter adaptive maneuvering target tracking algorithm
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  • CS-Jerk model-based parameter adaptive maneuvering target tracking algorithm

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Embodiment

[0074] Example conditions: In the plane Cartesian coordinate system, the target is in the x direction, the initial position of the target is 10000m, and the initial value of the velocity, acceleration and jerk of the target are respectively set to -300m / s, 0m / s 2 and 0m / s 3 , the measurement noise obeys N(0, 100 2 ) Gaussian distribution, the simulation time is 200s, and the sampling period is 1s. The target movement is as follows:

[0075] 1) Starting from 0s, after 40s, do a uniform linear motion at a speed of -300m / s;

[0076] 2) Starting from 40s, after 40s, at 300m / s 2 Acceleration of uniform acceleration motion;

[0077] 3) Starting from 80s, after 20s, at -60m / s 3 jerk to do uniform jerk motion;

[0078] 4) Starting from 100s, after 20s, at 10m / s 3 jerk to do uniform jerk motion;

[0079] 5) Starting from 120s, after 20s, maintain uniform acceleration;

[0080] 6) Starting from 140s, after 20s, at 60m / s 3 jerk to do uniform jerk motion;

[0081] 7) Starting f...

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Abstract

The invention discloses a CS-Jerk model-based parameter adaptive maneuvering target tracking algorithm. According to the algorithm, on the basis of a CS-Jerk model and current statistics thoughts, truncation probability distribution is utilized to describe current probability density of the acceleration change rate of a target, so that the relation of the variance of the acceleration change rate of the target and the Jerk mean is obtained, and therefore, the adaptive adjustment of the variance of the acceleration change rate of the target is realized; the change of the maneuvering condition of the target is judged through using residual vectors; and the adaptive adjustment of maneuvering frequency is realized through a nonlinear maneuvering frequency function; and the adaptive adjustment of a process covariance matrix Q (k) is realized, and the problem that a CS-Jerk model needs the manual setting of a process covariance matrix can be solved, and target tracking performance can be improved.

Description

technical field [0001] The invention belongs to the field of radar target tracking, in particular to a parameter adaptive maneuvering target tracking algorithm based on CS-Jerk model. Background technique [0002] Radar signal processing and radar data processing are the core technologies of modern radar systems, and target tracking is one of the key technologies in the process of radar data processing. After obtaining the target position and various motion parameters (such as speed, azimuth, pitch angle, etc.), the target tracking algorithm can be used to filter, smooth, and predict these measurement data to reduce or even eliminate random errors caused by measurement , accurately estimate the motion state parameters of the target, and realize the prediction of the target track. [0003] The target tracking technology mainly includes two aspects, one is to build the target motion model, and the other is to design the filtering algorithm, and the filtering algorithm is base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/72
CPCG01S13/72
Inventor 芮义斌孟栋梁李鹏谢仁宏郭山红
Owner NANJING UNIV OF SCI & TECH
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