Index system study on distributed InSAR formation system

doi:10.11947/j.AGCS.2022.20210375

Abstract

Abstract: TH-2 is the first close-range dual-satellite formation distributed InSAR satellite system in China, which enables China to establish global digital surface model and radar orthophoto acquisition capability. Addressing the need for rapid access to global elevation data (1∶50000), this paper investigates the index system for satellite formation design, control and planning based on an integrated design concept in the context of the TH-2. This method establishes a demonstration model of formation technical index for three types of application requirements: image bypass overlap, interferometric imaging baseline and earth observation effectiveness, based on the full consideration of the coupling effect of technical index on system application performance. The proposed method integrates formation theory into engineering practice, which can achieve the goal of fast and efficient distributed SAR satellite formation system design and support the development of model equipment and ground operation and management system. The in-orbit results of TH-2 show that the proposed method is reasonable and feasible, and the performance indicators are accurately assigned.

Key words: satellites system of distributed InSAR, satellite formation, technical coupling, TH-2

CLC Number:

P228.6

CHEN Li, ZHANG Dexin, CHEN Junli, SHAO Xiaowei. Index system study on distributed InSAR formation system[J]. Acta Geodaetica et Cartographica Sinica, 2022, 51(12): 2433-2439.

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