System and method for simulating imaging of sea surface and ship composite scene by stationary orbit SAR

Abstract

The invention discloses a system and method for simulating imaging of a sea surface and ship composite scene by a stationary orbit SAR. A target characteristic simulation subsystem generates the moving sea surface and ship composite scene, and a flight parameter setting computer generates a flight attitude and a flight track of the tested stationary orbit SAR equipment and controls the attitude ofthe tested stationary orbit SAR equipment; one-dimensional range profile data of the moving sea surface and ship composite scene is generated corresponding to the current position angle of the stationary orbit SAR, and converted into a corresponding stationary orbit SAR echo signal, the stationary orbit SAR echo signal is radiated to the tested stationary orbit SAR equipment by an array and the feed system through a feed control computer, and finally, the tested stationary orbit SAR equipment performs imaging on the received echo signal and displays the echo signal on a simulation situation display subsystem.

Description

technical field [0001] The invention relates to a composite scene imaging simulation system and method for a geostationary orbit SAR on a sea surface and ships, and belongs to the technical field of SAR semi-physical simulation. Background technique [0002] Geostationary orbit SAR is an active remote sensing radar that places SAR payloads on geosynchronous orbit satellites. Its main advantages are wide surface coverage, strong anti-strike capability, and short repeat visit cycle. important direction of development. However, the motion characteristics and Doppler characteristics of geostationary orbit SAR are different from other low-orbit and medium-orbit spaceborne SARs, and have the characteristics of long synthetic aperture time and curved trajectory. Fundamentals of Imaging Methodology Research. Under the existing conditions, it is difficult to realize the acquisition of geostationary orbit SAR measured data, so the geostationary orbit SAR imaging algorithm and motion...

AI Technical Summary

Problems solved by technology

Under the existing conditions, it is difficult to realize the acquisition of geostationary orbit SAR measured data, so the geostationary orbit SAR imaging algorithm and motion compensation algorithm cannot be effectively verified

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