Radar plot centroid method based on Radon-Fourier transformation
A condensing method and radar dot trace technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as large errors, little performance improvement, and complicated operations.
Active Publication Date: 2015-11-11
THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
View PDF3 Cites 12 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the existing method has the following three defects: (1) the existing method is to condense the distance and the azimuth separately; (2) the two benchmark methods are simple but have large errors, and the existing improved method can be improved whether it is weighted Or sorting is based on subjective assignment, the operation is complicated, and the performance improvement is not great; (3) There will be a certain proportion of distance jitter and azimuth jitter in the radar trace. The more the jitter, the more the existing point trace aggregation method will deviate from the target position true value
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
[0045] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.
[0046] Such as figure 1 As shown, the present invention is based on the Radon-Fourier transform radar trace aggregation method, and the specific implementation steps are as follows:
[0047] In the first step, the original point trace group is divided into batches according to the wave position from small to large, and each batch of point trace group will be condensed into a point, that is, the maximum point of target echo energy projection, such as figure 2 , is the original radar trace group to be condensed, the unit of distance is meter, and the unit of azimuth is degree. This example is a real radar scanning dot plot of a missile launch trajectory at the Jiuquan Launch Center.
[0048] In the second step, the Radon-Fourier transform algorithm is described as: Suppose f(t,τ)∈C is a two-dimensional complex function defined on the (t,τ) pla...
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 present invention discloses a radar plot centroid method based on Radon-Fourier transformation. According to the method, the 'fast-slow' time two-dimensional function SMF(t,tau)=NAM sin c(pai MBs(tau-taud(t)))*exp<-j2 pai fb tau d(t)> of a radar echo base-band signal is referred, through the Radon-Fourier transformation, echo energy is focused to a target center of gravity in a distance-azimuth space, and thus the purpose of plot centroid is achieved. According to the method, the operation is simple, the distance and azimuth of plots can be effectively agglomerated, the distance jitter and azimuth jitter phenomena of the plots can be adaptively inhibited, and the problem of the inaccurate agglomeration in plot distance jitter or azimuth jitter of a conventional method is solved. According to the method, based on an energy projection meaning, the process of artificial extraction of an effective value such as subjective weighting or sorting in the present method is solved, and thus the radar plot centroid is more convenient and effective.
Description
technical field [0001] The invention belongs to radar trace aggregation technology, in particular to an adaptive trace aggregation method based on Radon-Fourier transformation. Background technique [0002] Under the electronic informationization of modern warfare, the main task of the radar system is to determine whether the target exists, and to detect and track the target accurately, and the trace extraction of the echo data is the basis for the realization of the task. However, since the same target may be detected at different azimuths and distances at the same time, the radar echo will form multiple point trace data after signal and detection processing. Therefore, the purpose of dot trace aggregation is to extract the real position information of the target as much as possible through a certain algorithm, so as to ensure that the radar only outputs one target position information per scan. The excellent point-track aggregation method improves the accuracy of the targ...
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 IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 司晓云郝金双张奔郑坚赵春光
Owner THE 28TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP