摘要
根据卫星导航几何因子GDOP在具体课题中的应用,从五个主要方面对其进行了研究,可知不同星座配置参数对不同纬度地区GDOP会产生影响;坐标转换时GDOP、PDOP和TDOP不变,HDOP、VDOP变化;GDOP随卫星数目增加单调递减,但递减幅度变小;卫星对GDOP贡献越大,其故障产生的定位误差越大;使用加权GDOP可有效的减小定位误差.
Based on the application of Geometry Dilution of Precision （GDOP）, 5 main aspects of GDOP are studied. It is concluded that different constelhtion parameters influence GDOP of different latitude. GDOP, PDOP and TDOP are not changed but HDOP and VDOP are changed by coordinate conversion. GDOP decreases along with the number of satellites,but the decreasing extent reduces too. The more a satellite contributes to GDOP, the more the positioning error it produces when it has fault. Using weighted GDOP reduces the positioning error effectively.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2006年第12期2204-2208,共5页
Acta Electronica Sinica
关键词
卫星导航
DOP
星座配置参数
定位精度
加权GDOP
satellite navigation
dilution of precision
constellation deploy pardmeter
precision of positioning
weighted GDOP
