main.cpp

卫星单点定位程序

#include "GetRnxNav.h"
#include "GetRnxO.h"
#include "common.h"
#include "GetSP3.h"
#include "pp.h"

void main()
{
	int i;
	int useless = 0;						//PDOP值大于6的解个数
	char* GMOfilename = "00011951.00O";
	char* GMNfilename = "00011951.00n";
	char* SP3filename = "igs10704.sp3";
	GMN* pGMN;
	GMO* pGMO;
	SP3* pSP3;
	PPRESULT* pp;
	FILE* XYZfile = fopen("xyz.csv","w");
	FILE* NEUfile = fopen("NEU.csv","w");
	CRDCARTESIAN xyz;
	CRDTOPOCENTRIC neu;

	pGMO = (GMO *)GetGMO(GMOfilename);
	pGMN = (GMN *)GetGMN(GMNfilename);
	pSP3 = (SP3 *)GetSP3(SP3filename);
	pp = PP(pGMO, pGMN, pSP3);
	xyz.x = 0;
	xyz.y = 0;
	xyz.z = 0;
	
	//输出笛卡尔坐标，并计算平均坐标
	for (i = 0; i < pp->epoch_num; i++)	{
		if ((pp->result[i].PDOP - 6) > 10e-12)	{
			useless++;
			continue;
		}
		fprintf(XYZfile, "%12.1f,%12.1f,%12.1f,%12.9f,%5.2f\n",
			pp->result[i].crd.x, pp->result[i].crd.y, pp->result[i].crd.z,  
			pp->result[i].clk_bias, pp->result[i].PDOP);
		xyz.x += pp->result[i].crd.x;
		xyz.y += pp->result[i].crd.y;
		xyz.z += pp->result[i].crd.z;
	}
	xyz.x = xyz.x / (pGMO->hdr.epoch_number - useless);
	xyz.y = xyz.y / (pGMO->hdr.epoch_number - useless);
	xyz.z = xyz.z / (pGMO->hdr.epoch_number - useless);

	//将所有笛卡尔坐标转换成以平均坐标为站心的站心地平坐标系并输出到文件
	for (i = 0; i < pp->epoch_num; i++)	{
		if ((pp->result[i].PDOP - 6) > 10e-12)	{
			continue;
		}
		CartesianToTopocentric(&neu, &pp->result[i].crd, &xyz,
			6378137.0000000000, 1/298.257223563);
		fprintf(NEUfile, "%12.1f,%12.1f,%12.1f\n", neu.northing,
			neu.easting, neu.upping);
	}
	fcloseall();

}