Title:
TIME-DOMAIN IMAGING METHOD FOR VEHICLE-BORNE DOPPLER-DIVISION-MULTIPLE-ACCESS MIMO SYNTHETIC APERTURE RADAR
Document Type and Number:
WIPO Patent Application WO/2024/045362
Kind Code:
A1
Abstract:
A time-domain imaging method for a vehicle-borne Doppler-division-multiple-access MIMO synthetic aperture radar. The method comprises: collecting echo data of a linear frequency-modulated signal, which is transmitted to a target by a MIMO synthetic aperture radar that moves along a linear trajectory at a preset speed (S101); performing Doppler filtering on the echo data to obtain echo data corresponding to each channel, and according to the echo data corresponding to each channel, obtaining a transformed echo matrix corresponding to the channel, and projecting the echo matrix into a two-dimensional imaging coordinate system, so as to obtain a two-dimensional imaging result of the channel (S102); sequentially dividing a synthetic aperture of the synthetic aperture radar into a plurality of sub-apertures, and synthesizing two-dimensional imaging results of all channels corresponding to each sub-aperture, so as to obtain an imaging result corresponding to the sub-aperture (S103); and performing image fusion on imaging results corresponding to all the sub-apertures, so as to obtain a total imaging result corresponding to the synthetic aperture (S104). Thus, wide-angle-of-view high-resolution imaging is realized.
Inventors:
XU GANG (CN)
ZHANG BANGJIE (CN)
JI ANG (CN)
ZHANG HUI (CN)
HONG WEI (CN)
GUO KUNPENG (CN)
FENG YOUHUAI (CN)
ZHANG BANGJIE (CN)
JI ANG (CN)
ZHANG HUI (CN)
HONG WEI (CN)
GUO KUNPENG (CN)
FENG YOUHUAI (CN)
Application Number:
PCT/CN2022/133528
Publication Date:
March 07, 2024
Filing Date:
November 22, 2022
Export Citation:
Assignee:
NANJING HAWKEYE TECH CO LTD (CN)
UNIV SOUTHEAST (CN)
UNIV SOUTHEAST (CN)
International Classes:
G01S13/90; G01S7/41
Foreign References:
| CN115128608A | 2022-09-30 | |||
| CN114839633A | 2022-08-02 | |||
| CN114578358A | 2022-06-03 | |||
| CN113777577A | 2021-12-10 | |||
| CN104166141A | 2014-11-26 | |||
| CN112444811A | 2021-03-05 | |||
| US5608404A | 1997-03-04 |
Attorney, Agent or Firm:
PURPLEVINE INTELLECTUAL PROPERTY (SHENZHEN) CO., LTD. (CN)
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