High orbit SAR continuous gazing working mechanism system design method

A system design, high-orbit technology, applied in the radio wave measurement system, radio wave reflection/re-radiation, re-radiation utilization, etc., can solve the problem of not being able to meet the high-orbit SAR system imaging energy, so as to improve the status and expand the application benefit effect

Inactive Publication Date: 2018-05-18
SHANGHAI SATELLITE ENG INST
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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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  • High orbit SAR continuous gazing working mechanism system design method

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0024] Such as figure 1 As shown, the high-orbit SAR continuous staring work system system design method of the present invention comprises the following steps:

[0025] Step 1, according to the area of ​​interest, design the altitude, inclination and eccentricity of the satellite orbit;

[0026] Step 2: Combined with engineering practice and system requirements, select the appropriate radio beam scanning angle, including the analysis and design of range scanning angle and azimuth scanning angle,...

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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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90
CPCG01S13/9094G01S13/90
Inventor 陈国忠徐增刘艳阳陈汀
Owner SHANGHAI SATELLITE ENG INST
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