Time synchronization error analysis and evaluation of TH-2 satellite

doi:10.11947/j.AGCS.2022.20220219

Abstract

Abstract: The TH-2 satellite composed of two equal satellites,it adopts the technical system of satellite formation in different orbits and a bistatic radar transceiver mode.For this technical structure,time synchronization, phase synchronization and space synchronization must be established between two radars.The width of the mapping product,the image quality of the receiving radar,and the echo coherence are greatly affected by time synchronization error.In this paper,The mechanism of satellite time synchronization is described in detail, the synchronization error is analyzed and evaluated from the establishment and maintenance of time synchronization,and the effect of time synchronization error is analyzed systematically,The result of ground test and in-orbit test show that the analysis and evaluation conclusion is reliable.

Key words: TH-2, InSAR, satellite formation, time synchronization, error analysis

CLC Number:

P227

HUANG Yan, ZHANG Xiaowei, CONG Lin, DONG Xiaohuan. Time synchronization error analysis and evaluation of TH-2 satellite[J]. Acta Geodaetica et Cartographica Sinica, 2022, 51(12): 2455-2461.

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