RA-Signer-EKF (Random Access-Singer-Extended Kalman Filter) maneuvering target tracking algorithm based on radial acceleration

A technology of maneuvering target tracking and radial acceleration, which is applied in the direction of radio wave reflection/reradiation, utilization of reradiation, and measurement devices, which can solve the problem of weak adaptive tracking ability of target sudden maneuvers and large errors in velocity and acceleration estimation And other issues

Inactive Publication Date: 2013-04-17
NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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Problems solved by technology

[0008] The purpose of the present invention is to propose a RA-Singer-EKF maneuvering target tracking algorithm based on radial acceleration, to solve the problem that the existing Singer model algorithm is not strong in the adaptive tracking ability of the target burst maneuvering, and the velocity and acceleration estimation errors are relatively large The problem

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  • RA-Signer-EKF (Random Access-Singer-Extended Kalman Filter) maneuvering target tracking algorithm based on radial acceleration
  • RA-Signer-EKF (Random Access-Singer-Extended Kalman Filter) maneuvering target tracking algorithm based on radial acceleration
  • RA-Signer-EKF (Random Access-Singer-Extended Kalman Filter) maneuvering target tracking algorithm based on radial acceleration

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Embodiment Construction

[0101] The radial acceleration-based RA-Singer-EKF method of the present invention will be described in detail below in conjunction with the accompanying drawings. (Refer to the attached figure 2 ).

[0102] 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. Radar data processing sampling interval is T′ s =1s, distance measurement error ρ r =100m, angle measurement error ρ θ =0.5°, radial speed measurement error p rv =5m / s, radial acceleration measurement error ρ ra =5m / s 2 . Carrying out 100 Monte Carlo simulations, the root mean square error is:

[0103] in is the estimated value obtained by each simulation, and x is the real value.

[0104] Table 1 Target Maneuverin...

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Abstract

The invention discloses an RA-Singer-EKF (Random Access-Singer-Extended Kalman Filter) maneuvering target tracking algorithm based on radial acceleration, which belongs to the field of radar maneuvering target tracking. According to the method, the radial acceleration and radial speed information of a maneuvering target can be rapidly and accurately provided, and the tracking performance of a radar on the maneuvering target is improved effectively. The method comprises the following steps of: (I) sampling a radar receiving signal, and obtaining a target radial acceleration and a radial speed by using a matching pursuit (OMP (Operation Management Platform)) method; (II) performing coordinate conversion on the radial acceleration and the radial speed at a data processing stage, and introducing into a measuring equation and a state equation; and (III) realizing maneuvering target tracking by adopting a Singer model and an EKF algorithm. Due to the adoption of the RA-Singer-EKF maneuvering target tracking algorithm, the maneuvering situation of the target can be reflected accurately in real time, the target tracking accuracy is increased, the speed and acceleration estimation accuracies are improved, engineering implementation is easy, and a high engineering application value and a good popularization prospect are achieved.

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), and uses various maneuvering models and filtering algorithms to track the maneuvering target. Among them, the Singer model algorithm is a commonly used and effective The maneuvering target tracking algorithm is mainly realized by the following three s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/66
Inventor 王国宏贾舒宜张磊谭顺成于洪波
Owner NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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