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针对所出现的COMPASS定位精度、可靠性等问题,对提高COMPASS系统性能的方法做了分析;结合国外全球卫星导航系统的技术经验和目前公布的技术资料,对COMPASS系统进行了星座设计,通过对不同设计方案的卫星可见性分析以及各类DOP的数值对比,可以证明所设计的COMPASS星座方案能够满足基本的全球卫星导航系统的需求,并且相比较于其它导航系统而言,在中国及其周边地区的定位更加精准.“,”To improve the positioning accuracy and reliability of COMPASS, an analysis of the COMPASS has been performed; combination of technical experience of the foreign global satellite navigation system and the current release of technical information, we have designed COMPASS constellation, by satellite visibility analysis and a variety of DOP's numerical comparison of the different design options, we can prove the COMPASS constellation program can meet the needs of the global satellite location, especially in China and its surrounding areas, the designed COMPASS have more precise positioning compared to other global navigation system.