Identification Capability Analysis of Landslide Hazards for LT-1 and Sentinel-1 Using Time Series SAR Interferometry: A Case Study of Maoxian, Sichuan

China's inaugural L-band differential interferometric SAR satellite, also denoted as Lutan-1(LT-1), is an interferometric satellite constellation equipped with L frequency full-polarization payloads. An analysis aimed at identifying landslide hazards has been proposed for both LT-1 and Sentinel-1 through the application of time series SAR interferometry within the Maoxian region. When assessing landslide monitoring sensitivity in the same area and under comparable terrain conditions, LT-1 and Sentinel-1 exhibit akin capabilities. This study successfully identified and pinpointed 57 instances of landslide hazards within Maoxian area, utilizing a combination of 31 LT-1 and 12 Sentinel-1 images. The findings indicate that, given analogous imaging conditions, LT-1 boasts an 84.3% higher coherence compared to Sentinel-1, resulting in a 64.7% improvement in deformation accuracy. Consequently, this research serves as a valuable technical reference for leveraging LT-1 in the detection and surveillance of landslide hazards within intricate mountainous ravine regions.