Preliminary results of GNSS-InBSAR deformation retrieval using Beidou MEO repeated-orbit sequence

Global Navigation satellite-based bistatic interferometric synthetic aperture radar (GNSS-InBSAR) is a new type of surface observation system, which can simultaneously use the reflected echo signals of multiple navigation satellites to obtain three-dimensional deformation information of the target scene. The number of MEO satellites of Beidou navigation system is more than that of IGSO satellites, which can form a richer GNSS-InBSAR system configuration, provide observation information from more angles of the target scene, and combine with the observation information of IGSO to further improve the accuracy and frequency of deformation monitoring of the target scene. Based on five sets of MEO multi-satellite repeated-orbit images of GNSS-InBSAR in a certain urban area of Jinan, this paper obtains preliminary deformation monitoring results, which confirms the feasibility of long-term deformation monitoring based on Beidou MEO satellite, and lays a foundation for the research of Beidou MEO-IGSO cross-orbit deformation monitoring.