Study On Precise And Quick Orienting Technology By Double-Satellite Position System

In order to meet the need of missiles for fast and accurately positioning and orienting, this thesis does intensive research on the technique of orienting based on Double-satellite Positioning System of our own country. The thesis is divided into three parts according to its contents.In the first part, a new method of the integer ambiguity determination is presented. The new method sufficiently makes use of informations, such as rotation angle, length, height difference of baseline. It is very convenient to operation the new method in condition of long baseline and the rate of correct result is high. When the integer ambiguity is determined, the azimuth angle can be computed using the model of azimuth determination. Simulation result shows that the precision of azimuth is better than 16″when the length of the baseline is longer than 10 meters, the precise of azimuth is better than 8″when the length of the baseline is longer than 20 meters. Therefore, the orienting method based on Double-satellite Positioning System can meet the needs of missile artillery.In the second part, project design and manufacturing of orienting system based on Double-satellite Positioning System are introduced, including hardware and software. Measuring error that maybe exist are analyzed in the thesis, some verification methods are presented. At last, operation process of the orienting system is introduced.In the third part, experiments and results analysis are introduced. 3 experiments arecarried out, each experiment has 10 results of orienting. Statistic results shows that the precision of azimuth determination is better than 10″with the baseline about 26 meters long, time needed for each orienting is less than 10min. Therefore, orienting method and system based on Double-satallite Positioning System meet the need of missiles. In the last part of the thesis, problems existed in the system are analyzed, and suggestion for improvement are presented.