Dual-frequency Integer Ambiguity Rapid Resolution In COMPASS

COMPASS satellite navigation system is a next-generation global satellite positioningsystem which developed by Peoples Republic of China independently. It will be applied to allareas such as land, sea, interspace and firmament when entirely accanplished. Therefore,research and design on correlative algorithms aim at COMPASS satellite system is verynecessary.The thesis deploy the in-depth theoretic research on COMPASS navigaiton system andits correlative algorithms. Based on COMPASS dual-frequency signals which have ordinarypricision and provide open service(OS) can be received by most COMPASS users, two kindsof dual-frequency integer ambiguity solution methods which suit for two different conditionshave been researched. They also be compared with traditional ambiguity resolution methodsin the way of simulation and analysis. The thesis can be divided into three parts in general.The first part focuses on the COMPASS navigaiton system and describs the system indetail which include chapter one and chapter two. First and formost, the background andsignificance of the thesis have been introduced. And then, the constitute of COMPASS systemand its measurements, the way of positioning, sources of error etc. have been analysed indetail. Last but not least, integer ambiguity, which is pivotal problem of the thesis is educed.The second part of the thesis focuses on the research of algorithms which includeschapter three and chapter four. First, the filter positoning algorithms which are the basis offollowing methods have been researched. Then, study on some traditional and representativemethods on integer ambiguity solution. Finally, aim at two conditions, two kinds ofdual-frequency integer ambiguity solution methods—MTRC algorithm and BFR-3DS2algorithm—have been researched. The research has also been extended to the application ofthe TCAR algorithm in COMPASS.The second part of the thesis focuses on the research on the simulation of all thealgorithms, viz., chapter five. Real GPS observation data, simulant GPSobservation data andsimulant COMPASS observation data have been used in simulation respectively. First of all,filter positioning algorithms have been simulated in order to verify their accuracy and judgewhether they can be the basis and provided an initial positon for the following algorithms.And then, the most acceptable algorithm in traditional algorithms which is named asLAMBDA has been simulated in order to compare with the following algorithms. Finally, twokinds of COMPASS dual-frequency integer ambiguity fast resolution algorithm have been simulated in order to analyse the results and verify the validity and celerity attribute. Futhermore, extended the simulation of TCAR algorithm to the application in COMPASS.In the end, the content and results of the full text have been summarized, and the nextstep of the research as well as some new ideas are mentioned.