suanfa.rar_visual c_卫星轨道_卫星轨道计算

#include <stdio.h> #include <math.h> #define PI 3.14159265358979323846 void main() {double i,m,n,s; double A=(439.0+2384+6371*2)/2,C; double a,b; C=6371.0+2384-A; a=A*A;b=a-C*C; m=0;n=0; for(i=2*PI/1000;i<2*PI;i+=2*PI/1000) m=m+sqrt(a*sin(i)*sin(i)+b*cos(i)*cos(i)); m=m*2; for(i=2*PI/2000;i<2*PI;i+=2*PI/1000) n=n+sqrt(a*sin(i)*sin(i)+b*cos(i)*cos(i)); n=n*4; s=2*PI/6000*(sqrt(b)+sqrt(b)+m+n); printf("%lf\n",s); }结果： C=48723.610382km