摘要
该文提出一种在城市峡谷等复杂环境中卫星被频繁遮挡造成卫星信号短暂缺失的非完备条件下,利用少于3颗有效卫星,实现满足一定精度要求的定位方法。实际数据测试表明,在数十秒的短暂非完备期间内,该方法可以提供满足导航要求的定位结果,从而提高了GPS接收机的有效性。该方法不依赖额外传感器,亦不需要电子地图支持,同时系统成本无明显增加。
A new algorithm is proposed to enable GPS positioning with acceptable accuracy based on less-than-three available satellites in insufficient condition caused by temporal signal blockage. Tests in real data demonstrate that the proposed algorithm offers significant improvement of GPS availability by providing location results suitable for navigation applications in temporal insufficient condition more than one minute. The algorithm does not need extra sensors or support of digital maps, meanwhile the increased gross system cost is neglectable.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2009年第4期496-500,共5页
Journal of University of Electronic Science and Technology of China
基金
国家自然科学基金(60425413)
