Development of Remote Sensing Technology in China

After the key research in the Eighth Five-Year Plan and the Ninth Five-Year Plan, the comprehensive supporting development capabilities of RS, GIS and GPS have begun to take shape, laying the foundation for the practical application of 3S. In application, 3S technology has been used in national economic construction, especially in monitoring, evaluation and resource investigation of major natural disasters, which has provided a lot of scientific macro-decision information for national leaders and government departments at all levels, and produced great social benefits. In the process of technology application gradually shifting from state behavior to industrial industry, it has effectively promoted the recognition and adoption of these new technologies by land, agriculture, forestry and other departments. More and more departments put these technologies on the agenda of departmental business application, which has become one of the important basis for the competent departments to enforce the law or formulate industrial policies, norms and industrial technological transformation.

Remote sensing technology concentrates the latest achievements in aerospace, electronics, optics, computer communication and earth science, and is an important part of modern high technology. The development of remote sensing technology in the world will bring human beings into multiple layers in the next 15 years. Stereo. A new era of multi-angle, omni-directional and all-weather earth observation. A global earth observation system with high, medium and low orbits, large, medium and small satellites cooperating with each other and high, medium and low resolutions complementing each other will be able to provide massive earth observation data with various spatial resolutions, temporal resolutions and spectral resolutions quickly and timely.

1. A national macro information service system for resources and environment has been established.

The service system includes the national resources and environment spatial database with the national land use data of 654.38+250,000 as the core, two ministerial-level service systems, three provincial-level demonstration systems and five county-level service systems, the "4D" (digital elevation model DEM, digital orthophoto database DOQ, digital thematic map database DRG and digital thematic information DTI) technical system in the Pearl River Delta region and the national resources and environment information technology system.

2. An operational system for disaster remote sensing monitoring and assessment has been established.

The system consists of three parts: macro-dynamic monitoring system of disasters, real-time transmission system of airborne SAR data and flood assessment system. Floods and droughts. The macro-dynamic monitoring and evaluation system of forest fires and snow disasters has the ability to monitor the macro-dynamic of various natural disasters such as floods, droughts, forest fires and snow disasters in China and evaluate the regional coverage of disaster areas; The system realizes product transmission and data sharing with other subsystems through network communication, and provides disaster prevention and mitigation information services to application departments through VSAT and INTERNET network communication. 3. A three-dimensional monitoring system for marine environment is established.

As a maritime power, China has a natural sea area of 4.85 million square kilometers and a coastline of 1.8 million kilometers. Ocean and coastal areas are rich in resources. There are 12 provinces (cities and autonomous regions) along the coast, and 50% of big cities and 40% of small and medium-sized cities in China are also in this area. 60% of the total national economy comes from coastal areas. Therefore, the establishment of marine environmental monitoring system is China's strategic goal. The three-dimensional marine environment monitoring system established under the support of the ninth five-year national high-tech development plan (863 plan) mainly includes: offshore environment automatic monitoring technology and high-frequency ground wave radar marine environment monitoring technology. Application technology, system integration technology and demonstration test of remote sensing monitoring of marine environment.