A SAR satellite radar echo simulation method, system and medium

A radar echo simulation and satellite technology, which is applied in the field of SAR satellite radar echo simulation, can solve problems such as unrealistic echo simulators, and achieve the effects of fast echo signal simulation, accurate data, and improved accuracy and authenticity.
CN107765226BActive Publication Date: 2020-06-09BEIJING INST OF SPACECRAFT SYST ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING INST OF SPACECRAFT SYST ENG
Publication Date
2020-06-09

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Abstract

The invention provides an SAR satellite radar echo simulation method and system and a medium. The method is characterized by, according to attitude information transmitted by a satellite in real time,determining current antenna pointing of the satellite; obtaining satellite position, speed and acceleration information by searching a PVT table, and carrying out interpolation calculation to obtainthe position of the satellite at the current time; calculating the distance between the satellite and a ground simulation target and due gain of a current target echo; establishing an echo signal mathematical model of a space-borne SAR point target; and through superposition of target echo models of a plurality of points, generating an echo signal of a space-borne SAR scene, and finally, obtainingSAR satellite echo signal data. The method improves truthfulness of SAR echo simulation; and through an SAR scene generation method based on multipoint target superposition, different types of scenescan be generated more quickly.
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Description

technical field

[0001] The invention relates to a SAR (Synthetic Aperture Radar) satellite radar echo simulation method, system and medium, which are applicable to the SAR satellite imaging performance test and belong to the technical field of SAR satellite radar echo simulation. Background technique

[0002] Radar remote sensing has all-weather, all-weather imaging and certain penetration advantages. Synthetic aperture radar imaging satellites have been widely used in earth observation systems at home and abroad, and have played a very important role in military reconnaissance and national economic development. For example, Lacrosse in the United States, ENVISAT in ESA, SAR-Lupe and TerraSAR in Germany, Cosmo-Skymed in Italy, Radarsat in Canada, JERS-1 and ALOS in Japan, KOMSAT-5 in South Korea, Russia Almaz of India and Risat of India etc. In recent years, my country has also made remarkable achievements in synthetic aperture radar imaging satellites, and successively suc...

Claims

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