Maneuvering target tracking method based on rav-jerk model

A mobile target tracking, rav-jerk technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of large speed and acceleration estimation errors, weak adaptive tracking ability, etc.

Active Publication Date: 2018-05-04
NAVAL AVIATION UNIV
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Problems solved by technology

[0008] The purpose of the present invention is to propose a maneuvering target tracking method based on the RAV-Jerk model, which introduces the radial acceleration and radial acceleration information obtained in the signal processing stage into the maneuvering target tracking model, and solves the problem that the existing maneuvering model method has a sudden impact on the target. The adaptive tracking ability of maneuvering is not strong, and the problem of large error in velocity and acceleration estimation after filtering

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Embodiment Construction

[0107] The RAV-Jerk model-based maneuvering target tracking method of the present invention will be described in detail below in conjunction with the accompanying drawings. (Refer to the attached figure 1 ).

[0108] Embodiment condition: assume radar wavelength λ=8mm, radar pulse accumulation time T=10ms, radar signal processing sampling interval T s =5×10 -5 seconds, target initial state: X(0)=[120000m,-426m / s,0m / s 2 ,2000m,0m / s,0m / s 2 ] T , the target movement process lasted 90s, and the maneuvering moment and acceleration are shown in Table 1. The sampling interval of radar data processing is distance measurement error Angle measurement error Radial Velocity Measurement Error Radial Acceleration Measurement Error Carrying out 100 Monte Carlo simulations, the root mean square error is: in is the estimated value obtained by each simulation, and d is the real value.

[0109] Table 1 Target Maneuvering Movement Situation

[0110] Moment of target ...

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Abstract

The invention discloses a maneuvering target tracking method based on an RAV-Jerk model, and belongs to the field of radar maneuvering target tracking. The method can rapidly and accurately provide radial accelerated speed and radial speed information of a maneuvering target and effectively improve the tracking performance of a radar for the maneuvering target. The method mainly comprises the following steps: 1, sampling radar receiving signals, and obtaining radial accelerated speed and a radial speed of a target by use of an orthogonal matching pursuit (OMP) method; 2, introducing the radial accelerated speed and the radial speed into a measurement equation and a state equation of the Jerk maneuvering model at a data processing stage; and 3, realizing tracking of the maneuvering object by use of an extended Kalman filtering (EKF) algorithm. According to the invention, the maneuvering condition of the target can be accurately reflected in real time, the target tracing precision is improved, the speed and accelerated speed estimation precision is improved, engineering is easily realized, and the engineering application value and the promotion prospect are quite high.

Description

technical field [0001] The invention belongs to the field of radar maneuvering target tracking, and is suitable for precise tracking of maneuvering targets by high / medium pulse repetition frequency radars (such as airborne pulse Doppler radars, etc.). Background technique [0002] With the development of science and technology, the maneuverability of modern military aircraft and missiles has been greatly enhanced, which poses new challenges to the detection and tracking performance of radars. Tracking high maneuvering targets has also become a difficulty and focus in the field of radar target tracking. The existing maneuvering target tracking technology is based on the radar measurement information (position, Doppler velocity), using various maneuvering models and filtering algorithms to track the maneuvering target, among them, the Singer model method is a commonly used and effective The maneuvering target tracking method is mainly realized by the following three steps: ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 贾舒宜王海鹏谭顺成潘新龙王子玲丛瑜
Owner NAVAL AVIATION UNIV
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