The Geological Hazard Investigation System Based on Domestic Satellite:Demonstration and Application in the Loess Landslide Area

China has various types of geological hazards with wide distribution and great damage, which is one of the countries have most geological disasters in the world.If only using the method of ground survey, it will spend a long time and high cost, but it will be difficult to get a full coverage.With the rapid development of China's space technology and remote sensing technology in recent years, some new means for the investigation and research of the geological disasters have been provided.After analyzing and using the data of the high-resolution domestic remote sensing, the explanation of the disaster and the disaster-bearing body can be easy to identify, with a comprehensive coverage, significantly improving the quality.Meanwhile, it can shorten the working time and save the cost, which greatly improve the work efficiency."The geological hazard investigation system based on domestic satellite", developed by China geological environmental monitoring institute, has been used in this paper, and the Baoji loess area in Shaanxi Province has been selected as the experimental area.The domestic remote sensing data has been processed, the geological disaster information has been interpreted, and the disaster prone has been evaluated through using the platform of "geological disaster remote sensing survey system".Results show that, the massive remote sensing image data can be effectively processed by "The geological hazard investigation system based on domestic satellite", the production management and input/output can be easily implemented.The automatic information extraction and modeling of risk assessment not only can obtain good results, but also greatly save the labor and material cost, which lays a foundation for the system's application and popularization in the future.