Polarization detection rapid implementation method based on local whitening
A polarization detection and whitening technology, which is applied in the direction of measuring devices, radio wave measurement systems, radio wave reflection/re-radiation, etc., can solve the problems of reducing the amount of data processing, long computing time, difficult engineering implementation, etc. volume effect
Active Publication Date: 2016-09-21
CNGC INST NO 206 OF CHINA ARMS IND GRP
View PDF7 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The technical problem to be solved by the present invention is: Aiming at the shortcomings of the traditional sliding window whitening polarization detection method with large calculation amount and long calculation time, a polarization detection implementation method based on local whitening is proposed. All distance units need to be whitened, which greatly reduces the amount of data processing and is easy to implement in engineering. It solves the shortcomings of traditional methods that are difficult to implement in engineering due to the large amount of calculation.
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
[0024] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:
[0025] figure 1 It is a flow chart of a fast implementation method of polarization detection based on local whitening. The algorithm steps are divided into the following steps:
[0026] (1) Perform digital down-conversion, pulse compression and moving target detection on the intermediate frequency data of the four channels to obtain the moving target detection results of the four channels, and take out all the distance units of the Doppler channel where the target is located, and the distance units of each channel The size of the output matrix is recorded as 1×N, where N is the total number of distance units, and there are 4 vectors of 1×N in total. The 4 vectors are formed into an echo matrix by row, and the size of the echo matrix is 4×N;
[0027] (2) Fuse the moving target detection results of the four channels, that is, sum the echo matrix in step (1) b...
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 polarization detection rapid implementation method based on local whitening. The method is used for rapidly implementing radar polarization detection, satisfies a requirement of polarization whitening filtering for clutter stability, and significantly reduces the large calculated quantity of sliding window whitening filtering. The processing flows of the method comprise primary detection, maximum value clustering, polarization whitening filtering, and secondary detection. The rapid implementation method satisfies a requirement that the polarization whitening filtering requires the distribution stability of the clutter in a long-distance window, greatly reduces the large calculated quantity due to sliding window polarization whitening by means of the polarization whitening filtering after the maximum value clustering, and is extremely suitable for engineering design realization.
Description
technical field [0001] The invention relates to the field of radar signal processing, in particular to radar polarization detection processing, and proposes a new fast implementation method of polarization detection based on local whitening, which can solve the problem of traditional algorithms on clutter stability in radar polarization detection Requirements, while greatly reducing the amount of computation compared with traditional algorithms. Background technique [0002] Polarization detection uses the polarization information in the radar echo to improve the performance of the target detection and resolution system. At present, there are Optimal Polarization Detector (OPD), Unit Likelihood Ratio Detector (ILRT), Polarization Whitening Filter (PWF), Single Channel Detector, Full Channel Detector (SD), Powerful Synthetic Detection A variety of polarization detectors such as detectors (PMS). These polarization detectors have been described in detail in many literatures. ...
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 Applications(China)
IPC IPC(8): G01S13/04G01S7/41
CPCG01S7/41G01S13/04
Inventor 郭鹏程戴巧娜罗丁利王勇杨磊王亚军徐丹蕾张军陈尹翔
Owner CNGC INST NO 206 OF CHINA ARMS IND GRP