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Detection tracking integrated method based on RCS prediction information

A technology for detecting, tracking, and predicting information, applied in the field of radar, can solve the problems of not guaranteeing the rapid end of the track, false tracks, etc., and achieve the effects of improving target detection performance, extending tracking distance, and improving detection probability.

Active Publication Date: 2016-08-10
XIDIAN UNIV +1
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Problems solved by technology

However, when the target suddenly disappears, if this method is still used to adjust the detection threshold in the target prediction area, it will not be able to ensure the rapid end of the track, resulting in the generation of false tracks

Method used

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  • Detection tracking integrated method based on RCS prediction information
  • Detection tracking integrated method based on RCS prediction information
  • Detection tracking integrated method based on RCS prediction information

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Embodiment Construction

[0030] refer to figure 1 , the implementation steps of the present invention are as follows:

[0031] Step 1, initialize parameters.

[0032] Set the initial value of the missing alarm counter to 0; set the initial output signal of the geophone to 0, and the geophone waits to receive the signal; through the initial algorithm of the target track, the initial state estimation value of the target track is obtained and the initial state estimation covariance matrix P 0 .

[0033] Step 2, set the target state transition equation and radar measurement equation, according to the estimated value of the target state at the k-1th moment and the state estimation covariance matrix P at the k-1th moment k-1 , to calculate the predicted value of the target measurement at the kth moment

[0034] 2a) Set the target state transition equation as:

[0035] x k =F k|k-1 x k-1 +v k|k-1 ,

[0036] where x k Indicates the target state at the kth moment, F k|k-1 Represents the target...

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Abstract

The invention discloses a detection tracking integrated method based on radar cross section (RCS) prediction information, which is mainly used for solving the problems that, in the prior art, the target detection probability is low and target tracking distance is short. The detection tracking integrated method based on RCS prediction information comprises steps of determining a target prediction wave gate at the k moment according to a target state estimation value and a state estimation covariance matrix of the k-1 moment, calculating a detection threshold of each detection unit in the prediction wave gate, performing detection on an echo signal to obtain a primary measurement data set, determining an RCS prediction range of the k moment according to the RCS observation information of the k-1 moment before, screening out measurement data of output data of a wave detector which exceed the detection threshold from the primary measurement set as the measurement data set of the k moment, and calculating the object state estimation value and the state estimation covariance matrix of the k moment. The detection tracking integrated method disclosed by the invention improves the object detection probability and track continuity, can be used for improving the object detection probability under the radar object tracking state, and expands the object tracking distance.

Description

technical field [0001] The invention belongs to the technical field of radar, and specifically relates to a detection and tracking method for adjusting the false alarm probability of each detection unit in a target prediction wave gate based on radar scattering cross-sectional area RCS prediction information, which can be used to improve the target detection probability in the state of radar target tracking, Extended target tracking distance. Background technique [0002] The radar system includes two basic modules of target detection and target tracking. The main task of target detection is to process the echo signal received by the radar and judge the presence or absence of the target. Due to the influence of noise and interference, it is necessary to use the constant false alarm method to reduce the probability of misjudgment and ensure that the radar signal detection has a constant False alarm characteristics, commonly used constant false alarm detection algorithms incl...

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Application Information

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IPC IPC(8): G01S13/72G01S7/292G01S7/35
CPCG01S7/2927G01S7/354G01S13/723
Inventor 周生华刘宏伟鲁瑞莲刘红亮王鹏辉
Owner XIDIAN UNIV
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