Research On Airborne Gps Application In Rs Measurements

With the rapid development of GPS technology, military departments of various countries and civilian departments draws great concern on GPS. It has already been used in many fields such as Geologic Survey, Resource Exploration, satellite remote sensing, civil aviation, exact time compare, earth measurement, etc. and has shown its superiority and enormous potentiality.This subject is national defence the 11th-Year Plan research project in advance. We make an primary research on several problems of the GPS's application research in remote sensing in this thesis. This thesis has introduced the principle of GPS and the knowledge some date of the GPS dynamic Carrier Phase Measurement, then has make an analysis and research on the error. Because the output of GPS coordinate is WGS-84, and we need the local coordinate in fact, an research was carried on how to transform WGS-84 into other local coordinates system, and discuss that genetic algorithm solve the ill-condition equation. An analyse and research was maked on some key problemes which include how to select an right GPS, coordinate transform, data rate and interface among multi-sensor, Electromagnetic Compatibility, GPS's position error, GPS installation, setup of difference GPS'sround station. Finally, a synchronous scheme was put forward and designed which is designed for synchronous receiving/delivery system of SAR based on GPS. Some research results is provided in this thesis as follow:(1) make the experiment to gather GPS simulation data which will offere the parameter for integration of infrared picture and SAR picture in the future;(2)Base on Visual Studio 2005 platform, make the programme to realize the transform of the coordinate from WGS84 to BJ54 and Xian80, which will offere application in the future;(3)Have offered the application problem research to how to make GPS work with other airborn multi-sensor well;(4) GPS data fitting and interpolation is carried on the reaserch in this thesis, and we carry on emulation to the result with Matlab.Finally we provide the synchronous scheme of Bistatic SAR by use of GPS.This scheme has offered reference for subsequent research and airborne pair of synchronous realizing finally of station SAR measuring system.