The successful launch of the Lutan-1 satellite group(LT-1)has achieved the development of China's L-band interfer-ometric SAR satellite from scratch.For obstacle avoidance,a small part of the spatial baselines of LT-1 satellite was long,but the length of the baseline has been controlled to within 400 meters after the orbit adjustment.In order to verify the availability and accuracy of LT-1 satellite data,this article takes the Datong mining area in Shanxi Province as an example and obtains 25 LT-1 strip pattern image data from December 23,2022 to May 20,2023,respectively,for SBAS-InSAR and PS-InSAR data processing.By comparing and analyzing the deformation monitoring results of time-series InSAR and GPS stations in the light of sight,the standard deviations of the two are 5.7 mm/a(SBAS-InSAR)and 3.4 mm/a(PS-InSAR),respectively.The root mean square error of the time series is less than 5 mm,indicating high consistency.The research has shown that domestically produced LT-1 satellites have high-precision deformation monitoring capabilities,providing reliable data assurance for domestic terrain surveying and deformation monitoring.
维普
万方数据