摘要
通过STK卫星数据库建立了GPS卫星星座;根据GALILEO卫星设计参数,利用轨道向导建立GALILEO卫星星座。比较了武汉地区GPS、GALILEO、GPS和GALILEO组合的卫星可见数和GDOP值,以及全球GDOP值的分布。
Using the STK satellite database, the GPS satellite constellation is established. Then use the Galileo orbit parameter for simulating the Galileo satellite constellation and DOP, compares the visible satellite number and DOP between GPS and Galileo system, at same time and same place Wuhan. Also the whole world DOP distribution was depictured. The result indicates that Galileo constellation is better than GPS. And simulates GPS and Galileo combined constellation, more visible satellite brings diminished DOP, in contrast with single system, so that improves the position precision, and also broaden the scope of position due to limited elevation.
出处
《地理空间信息》
2009年第3期102-104,共3页
Geospatial Information
