| The assessment of the satellite system performance is a necessary step of self-development. The analysis of the real data of the Beidou system performance parameters has important practical implications for regional systems and for the future global covering system.Comparing and analyzing statically for every satellite based on the real data of Beidou system, especially for these who has a bad visibility, this research help to assess the single satellite performance.Comparing the horizontal accuracy and vertical accuracy of Beidou and GPS during a week to help to study the performance of accuracy of Beidou based on a long term of data. In the other hand, this study shows the disadvantage of Beidou comparing to GPS in positioning accuracy and its stability. This will help to provide a guidance in continuous building of Beidou system in future.Based on data of a whole week, after analyzing and summarizing the models of different precision factors. The result shows that the factors are better than that fixed in related Beidou performance standards, meanwhile, it shows the disadvantage of Beidou comparing to GPS.Based on the analyzing of GDOP during a week, the study of best constellation gives a method to assess single satellite performance by summarizing the time of each satellite being in the best constellation. Based on the threshold value of GDOP, the study gives a way to chosen back up constellations. This will help to augment the service continuity.The use of migration algorithm derived satellite elevation and azimuth relative to any location, thus solve for the particular combination of satellite GDOP value at any location.Based on this algorithm, the GDOP value can be theoretically larger area distribution analysis.These works will help to lay a theoretical foundation from regional to global strategy.Study of the signal continuity service continuity as well as some availability standards.Verifying these standards based on the real data. |
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