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Space-borne dual-band SAR system and ship target detection method

A detection method and dual-band technology, applied in the field of radar, can solve problems such as high system complexity, high echo data rate, and poor information timeliness, and achieve low system complexity, low echo data volume, and wide detection width Effect

Active Publication Date: 2022-03-04
BEIJING SATELLITE INFORMATION ENG RES INST
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Problems solved by technology

[0004] The embodiment of the present invention provides a spaceborne dual-band SAR system and a ship target detection method to solve the problem of high system complexity, high echo data rate and poor information timeliness of multi-channel spaceborne SAR in the prior art. question

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  • Space-borne dual-band SAR system and ship target detection method
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  • Space-borne dual-band SAR system and ship target detection method

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Embodiment Construction

[0051]In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details.

[0052] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0053] see figure 1 , is a schematic structural diagram of the spaceborne dual-band SAR system in this embodiment. For ease of description, only the parts related to this embodiment are shown.

[0054] The spaceborne dual-band SAR system of this embodiment mainly includes: S-band SAR 110 , X-band SAR 120 and a signal processing module 130 . Both the S-band SAR 110 and the X-band SAR 120 are connected to the signal processing module 130 .

[0055] Due to the ...

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Abstract

The invention relates to the field of radar technology, and provides a spaceborne dual-band SAR system and a detection method for a large-scale sea surface ship target, including: S-band SAR, X-band SAR and a signal processing module; the S-band SAR is used to detect large-scale sea surface Carry out scanning detection of ship targets on board, and obtain ship target echo signals within the preset width range; the signal processing module is used to determine whether there are key ship targets in the currently detected sea area according to the ship target echo signals , if it exists, determine the target area where the X-band SAR images the key ship target, and start the X-band SAR; the X-band SAR is used for high-resolution imaging detection of the target area. The detection width of the present invention is wide and the resolution is high. Compared with the multi-input multi-output spaceborne SAR, the present invention has the advantages of low system complexity, low amount of echo data, and high timeliness of information.

Description

technical field [0001] The invention relates to the field of radar technology, in particular to a spaceborne dual-band SAR system and a ship target detection method. Background technique [0002] The imaging and detection of large-scale sea surface ship targets has always been a hot spot in scientific research. Spaceborne SAR can penetrate clouds and fog, and can realize all-weather and all-weather observation of the sea, so it is widely used in high-resolution imaging and detection of sea surface ship targets. Traditional spaceborne SAR (Synthetic Aperture Radar, Synthetic Aperture Radar) is limited by antenna area and working mode, so it is difficult to achieve high-resolution wide-format imaging detection, and cannot meet the requirements of large-scale sea ship target detection and recognition. [0003] In recent years, new system SAR technologies such as multi-channel spaceborne SAR and multiple-input multiple-out (Multiple-In Multiple-Out, MIMO) spaceborne SAR have bee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/90G01S13/04G01S7/292G01S7/41
CPCG01S13/90G01S13/9029G01S13/04G01S7/2927G01S7/414G01S7/415
Inventor 夏正欢赵志龙张涛刘敦歌李科张瑶郭宇华石慧峰岳富占
Owner BEIJING SATELLITE INFORMATION ENG RES INST
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