中文说明：应用背景本程序主要应用与从事GPS、北斗等技术的相关研究人员，该程序对导航初学者的学习非常有帮助，通过优选星，不仅可以使读者了解GPS的定位过程，还可以了解卫星如何优选才更好的有利于定位精度的提高。通过该程序，相信大家对导航会有更进一步的理解。关键技术该程序的关键技术有卫星定位导航算法、卫星可见性优选算法、卫星几何结构分布。通过这几项关键技术，相信后面对大家的学习有很大帮助。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
English Description：
Application backgroundThis procedure is mainly used and engaged in GPS, Beidou technology related to the researchers, the program for beginners on the navigation of learning very helpful, through the optimization of the star can not only enable readers to understand the GPS positioning process, can also understand the satellite how to optimize it better is to improve the positioning accuracy of the. Through this process, I believe we will have a better understanding of navigation.Key TechnologyThe key technologies of the program are satellite positioning navigation algorithm, satellite visibility optimization algorithm, and the distribution of satellite geometric structure. Through the several key technologies, I believe behind to everyone learning a great help..........