Data application test of LuTan-1 satellite based on the LandSAR software

LuTan-1 (LT-1) satellite constellation is used to conduct surface deformation monitoring. Following the launch of LT-1, we began to use the independently developed LandSAR software for differential interferometric data processing and application. Built upon the Model-View-Controller (MVC) architectural pattern, LandSAR is coded in C++ for cross-platform and multi-architecture compatibility. Based on the MVC of LandSAR, we carried out white-box testing of model and controller, as well as black-box testing of the view. By testing, we have formed different processing flow, including InSAR、DInSAR and stacking. In order to test the application of LT-1 and LandSAR in different scenarios, we used 6 scenes of 3-meter-resolution single look complex (SLC) images to conduct InSAR and stacking processing around a reservoir. Comparing to the 30-meter-resolution Copernicus DEM, the 10-meter-resolution LT-1 DSM results exhibit more detailed information. Stacking results indicate 7 typical subsidence areas, flagging potential hazards that could threaten the stability of the reservoir. The results proved application potential of the data and the processing capabilities of the software.