Set of tools to perform transformations between projection, ellipsoidal and cartesian coordinates in either direction.
-Set of tools to perform transformations be tween projection. ellipsoidal and cartesian coordinates in eith er direction.
本程序对GPS的选星进行了模拟。给出7个可见星的信息,选则其中最好的四颗。-This procedure carried out on the GPS satellite simulated election. Seven visible stars are given information, the election is the best of four.