【摘要】 陆地探测一号01组卫星(LT-1)的发射成功实现了我国L波段干涉SAR卫星“从无到有”的发展。LT-1卫星因空间避障等原因，部分空间基线较长；经过调轨后，空间基线长度控制在400 m以内。为了验证LT-1卫星数据的可用性及精度，本文以山西大同矿区为例，获取了2022年12月23日至2023年5月20日共25景LT-1条带模式影像数据，分别进行差分干涉测量短基线集时序分析(SBAS)技术和永久散射体(PS)技术数据处理。对时序InSAR和GPS站点在SAR卫星视线向上的形变监测结果进行对比分析，二者差异标准差分别为5.7 mm/a(SBAS-InSAR)和3.4 mm/a(PS-InSAR),时间序列均方根误差均小于5 mm,具有高度一致性。研究表明国产LT-1卫星具备高精度的形变监测能力，为国内地形测绘及形变监测提供了可靠的数据保障。更多还原

【Abstract】 The successful launch of the Lutan-1 satellite group(LT-1) has achieved the development of China ?s L-band interferometric 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.更多还原