一种在给定范围内确定GPS卫星个数的实用方法

A practical method of ascertaining quantity of GPS in a given range

给出了一种利用圆方程和直线方程判断GPS卫星是否落在观测站天顶圆锥体范围内的方法和判据。利用此方法可确定该范围内某一时刻有多少颗星,并可确定在不同天顶角下圆锥体内GPS卫星个数。

A method of ascertain GPS within cone above observation station with circle equation and line equations, and adjudicate. The method ascertain quantity of GPS in a given range in certain time, and ascertain quantity of GPS within cone with varying zenith angle.