A multi-frame joint target track recognition method
A target track and recognition method technology, applied in the field of radar, can solve the problem of unfavorable extraction of accurate target track, achieve accurate target track estimation results, and avoid the effect of single-frame target amplitude loss
Active Publication Date: 2021-04-13
XIAN INSTITUE OF SPACE RADIO TECH
View PDF11 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The above two false track removal methods are suitable for the situation where there is no crossing or adjacent movement between targets, that is, there is no interference between multiple target tracks. When there is interference between tracks in the scene, it is not conducive to extracting accurate targets. track
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
[0033] The implementation and effect of the present invention will be further described in detail below.
[0034] The present invention can be applied in a multi-target environment with clutter noise, by updating the amplitude of each frame resolution unit to remove false tracks caused by target energy diffusion and clutter noise points, and solve problems caused by target energy diffusion, strong noise, etc. The problem of false target track interference, such as figure 1 As shown, the specific implementation steps are as follows:
[0035] (1), according to the K-frame observation data and the target motion model, track backtracking is performed to obtain all suspected target tracks. Each frame of observation data includes the position coordinates, speed and amplitude information of each resolution unit in the radar observation area, and each The suspected target track is composed of K observation data corresponding to K frames of observation data;
[0036] (2) All suspecte...
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 multi-frame joint target track identification method, which mainly solves the problem of target energy diffusion, residual clutter points after clutter cancellation, and strong noise points interfering with the target track. The invention effectively removes the interference track caused by the energy diffusion of the target by updating the amplitude value of the observation area corresponding to the track overlapping with the target track by more than L frames. Through the statistics of the deviation angle of each frame track, the interference track caused by strong noise and residual clutter is greatly reduced. During track processing, only one target track is extracted each time, and the amplitude of the corresponding resolution unit is updated at the same time, which avoids the interference between tracks when multiple targets are approaching and cross-moving, so accurate target track can be obtained in a multi-target observation environment. trace estimation results.
Description
technical field [0001] The invention relates to a multi-frame joint target track recognition method in a clutter noise environment, which can be used to remove false target track caused by target energy diffusion, strong noise, etc., and accurately identify the target track, belonging to the technical field of radar. Background technique [0002] In general, according to the target motion model, after multi-frame track tracing, the target energy is accumulated, which is beneficial to subsequent target detection. However, in the process of the track backtracking of the target according to the motion model, false targets may appear on the backtracking position, such as clutter or strong noise points, and the target energy will form a false track with clutter or strong noise. Caused by target energy diffusion, considering that target energy is much stronger than noise, there are a large number of false tracks caused by target energy diffusion during track processing. The other...
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): G01S13/58G01S13/62G01S7/41
CPCG01S7/414G01S7/415G01S13/58G01S13/62
Inventor 温和李渝段崇棣王伟伟杨晓超李奇朱江黎薇萍范一飞张军
Owner XIAN INSTITUE OF SPACE RADIO TECH