Title:
RADAR DEBLURRING AND DESHIELDING METHOD BASED ON ORTHOGONAL TWO-PHASE CODED SIGNALS
Document Type and Number:
WIPO Patent Application WO/2023/040929
Kind Code:
A1
Abstract:
A radar deblurring and deshielding method based on orthogonal two-phase coded signals, which method relates to the field of radars, and solves the problems of distance blurring and shielding. The method comprises: according to a chip length, choosing to use a Walsh matrix and a genetic algorithm to perform generation and optimization or to use an exhaustion method so as to obtain an orthogonal two-phase coded signal set; determining a radar period and a pulse repetition interval (PRI) according to the farthest detection distance of a radar; determining the number m of pulses that are transmitted within a time corresponding to the largest detection distance, and selecting m signals from the orthogonal two-phase coded signal set to form a group of orthogonal two-phase coded pulse signals; performing accumulated echoing on transmitted pulse signals, and generating an echo matrix to perform frequency domain pulse compression processing in cooperation with the orthogonal two-phase coded pulse signals, so as to obtain a new matrix after the processing; and performing MTD processing on the new matrix. The problem of speed blurring is largely solved, while the problems of distance blurring and shielding are also solved.
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Inventors:
YAN JIHONG (CN)
LI CONG (CN)
ZHANG HUAN (CN)
DONG HAIYANG (CN)
ZHAI JIANSHU (CN)
YANG LI (CN)
NI WEIHAN (CN)
WANG SHUNXIANG (CN)
LI CONG (CN)
ZHANG HUAN (CN)
DONG HAIYANG (CN)
ZHAI JIANSHU (CN)
YANG LI (CN)
NI WEIHAN (CN)
WANG SHUNXIANG (CN)
Application Number:
PCT/CN2022/118911
Publication Date:
March 23, 2023
Filing Date:
September 15, 2022
Export Citation:
Assignee:
YANGTZE DELTA REGION INSTITUTE QUZHOU UNIV OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA (CN)
International Classes:
G01S13/32; G01S7/28; G01S13/58
Foreign References:
| CN113791405A | 2021-12-14 | |||
| CN112986989A | 2021-06-18 | |||
| CN102353938A | 2012-02-15 | |||
| CN107783093A | 2018-03-09 | |||
| CN109814073A | 2019-05-28 | |||
| US20130278455A1 | 2013-10-24 |
Other References:
SHAN YICHEN, XU BAOQING, LEI ZHANGHUA, LI YI, SU XIAOMIN, LI YAMEI: "A Two-Dimensional Combined Ambiguities Resolution Algorithm Based on Coherent Accumulation for Ground MPRF-PD Radar", FIRE CONTROL RADAR TECHNOLOGY, vol. 50, no. 2, 30 June 2021 (2021-06-30), XP093049101, DOI: 10.19472/j.cnki.1008-8652.2021.02.004
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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