Double-satellite formation SAR satellite joint test system and method

A joint test and satellite technology, which is applied in the field of satellite ground test system, can solve the problems such as the design of the joint test system of double-star formation SAR satellites that have not yet been found, and achieve the effect of improving the technical effect
CN110501734AActive Publication Date: 2019-11-26SHANGHAI SATELLITE ENG INST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI SATELLITE ENG INST
Publication Date
2019-11-26

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Abstract

The invention relates to a double-satellite formation SAR satellite joint test system and method in a satellite ground test system. The double-satellite formation SAR satellite joint test system comprises a double-star dynamics simulator, a double-user GNSS simulator, a double-user radar target echo simulator and a microwave switch system. The double-star dynamics simulator provides time, orbit and attitude information of double-star on-orbit simulation flight. The double-user GNSS simulator receives time starting point, position and speed information provided by the double-satellite dynamicssimulator and then generates a navigation radio frequency signal in real time and provides the signal for an on-satellite GNSS receiver. The double-user radar target echo simulator receives the time-frequency information of the GNSS simulator then sends echoes to an on-board radar; and the echoes are received by the on-board SAR system. The microwave switch system establishes an inter-satellite communication link and a load phase synchronization link between two satellites and has a link switching function. According to the invention, the on-orbit joint work mode of the double-satellite formation SAR satellite can be simulated truly; and the double-satellite formation SAR satellite joint test system and method can be used for implementing the ground double-satellite function and performance joint testing of the double-satellite formation SAR satellite.
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Description

technical field

[0001] The invention relates to a satellite ground test system, in particular to a double-star formation SAR satellite joint test system and method. Background technique

[0002] The double-star formation SAR satellite uses two formation satellites as the platform, and uses high-resolution synthetic aperture radar and high-precision inter-satellite relative state measurement equipment as payloads. By configuring inter-satellite communication links and phase synchronization links, it can make The two satellites observe the ground at the same time, and can quickly obtain global radar images and auxiliary measurement data all-weather and all-time. It is an effective space-based earth observation system.

[0003] Double-star formation SAR satellites have functions such as inter-satellite communication, inter-satellite relative state measurement, inter-satellite time synchronization, inter-satellite phase synchronization, dual-satellite formation control, and dual...

Claims

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