High orbit SAR continuous gazing working mechanism system design method

Abstract

The invention provides a high orbit SAR continuous gazing working mechanism system design method comprising the following steps: 1, designing the height, inclination angle and eccentricity of a satellite orbit according to an interested area scope; 2, combining with engineering reality and system requirements; 3, designing high orbit SAR satellite sliding window imaging work modes according to thesatellite wave beam motion speed, and designing the sliding window sizes and speed; 4, selecting the satellite networking number and designing a networking mode according to the satellite energy restrictions, thus realizing 24-hour continuous visual and imaging observation for the interested areas. The method can optimize the orbit design and double-satellite cooperation so as to shorten the aperture synthesis time, thus making up the disadvantages of the satellite power supply capability and imaging visual angle limits, and realizing the 24-hour continuous gazing imaging observation of the interested key areas.

Description

technical field [0001] The invention relates to a design method, in particular to a system design method for high-orbit SAR continuous staring working system. Background technique [0002] At present, SAR satellites are mainly deployed below low-orbit (1000km). Due to the high speed and short overhead time of low-orbit satellites, it is impossible to achieve 24-hour continuous staring imaging and quasi-real-time image acquisition capabilities for the region of interest. [0003] High-orbit synthetic aperture radar (SAR) satellites, by deploying satellites in geosynchronous orbits, use SAR to achieve earth imaging observations. Compared with low-orbit SAR satellites, high-orbit SAR satellites can make full use of the high altitude of the geosynchronous orbit and the quasi-synchronous characteristics of the earth's rotation, and have the potential for staring imaging and real-time observation of designated key areas. [0004] In order to realize the relative motion between th...

AI Technical Summary

Problems solved by technology

However, limited by the working principle of spaceborne SAR imaging and the technology and capability of spaceborne power supply, if the traditional spaceborne SAR working system is used, it cannot meet the high-orbit SAR system's long-term work, continuous and staring imaging energy.

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