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@@ -0,0 +1,601 @@
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#ifndef _READ_H_
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#define _READ_H_
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#include<stdio.h>
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#include<string.h>
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#define MAXRINEX 1000//一行最大字符数
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void setstr(char* des, const char* src, int n)
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{
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char* p = des;
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const char* q = src;
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while (*q && q < src+n)
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{
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*p++ = *q++;
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}
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*p-- = '\0';
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//去掉尾部空格
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while (p >= des && *p == ' ')
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{
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*p-- = '\0';
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}
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}
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//获取文件数据块行数，从END OF HEADER后开始起算
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extern int getgpssatnum(FILE* fp_nav)
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{
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int gps_satnum = 0;
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int flag = 0;
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char buff[MAXRINEX];//用来存放读取到的字符串
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char satvar;
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char* lable = buff + 60;
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//fgets函数，读取一行，当读取结束后返回NULL指针，格式如下：
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//char * fgets ( char * str, int num, FILE * stream );
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while (fgets(buff, MAXRINEX, fp_nav))
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{
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if (flag == 1)
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{
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while (fgets(buff, MAXRINEX, fp_nav))
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{
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strncpy(&satvar, buff + 0, 1);
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if (satvar != 'G')
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{
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continue;
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}
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else if (satvar == 'G')
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{
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gps_satnum++;
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break;
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}
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}
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}
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if (strstr(lable, "END OF HEADER"))
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{
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flag = 1;
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}
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}
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return gps_satnum;
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}
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//将字符串转换为浮点数,i起始位置，n输入多少个字符
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static double strtonum(const char* buff, int i, int n)
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{
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double value = 0.0;
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char str[256] = { 0 };
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char* p = str;
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/************************************
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* 当出现以下三种情况报错，返回0.0
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* 1.起始位置<0
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* 2.读取字符串个数<i
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* 3.str里面存放的字节数<n
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*************************************/
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if (i < 0 || (int)strlen(buff) < i || (int)sizeof(str) - 1 < n)
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{
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return 0.0;
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}
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for (buff += i; *buff && --n >= 0; buff++)
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{
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//三目操作符：D和d为文件中科学计数法部分，将其转换成二进制能读懂的e
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*p++ = ((*buff == 'D' || *buff == 'd') ? 'e' : *buff);
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}
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*p = '\0';
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//三目操作符，将str中存放的数以格式化读取到value中。
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return sscanf(str, "%lf", &value) == 1 ? value : 0.0;
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}
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//导航头文件结构体
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typedef struct nav_head
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{
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double ver;//rinex 版本号
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char type[20];//读取的数据类型
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double ION_GPSA[4];//8个电离层参数
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double ION_GPSB[4];
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double ION_BDSA[4];//8个电离层参数
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double ION_BDSB[4];
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double ION_QZSA[4];//8个电离层参数
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double ION_QZSB[4];
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double ION_IRNA[4];//8个电离层参数
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double ION_IRNB[4];
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double GPUT[4];
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double GLUT[4];
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double GAUT[4];
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double BDUT[4];
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double QZUT[4];
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double IRUT[4];
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double SBUT[4];
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int leap;
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}nav_head, *pnav_head;
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//导航数据结构体
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typedef struct nav_body
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{
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//数据块第一行内容：
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int sPRN;//卫星PRN号
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//历元：TOC中卫星钟的参考时刻
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int TOC_Y;//年
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int TOC_M;//月
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int TOC_D;//日
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int TOC_H;//时
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int TOC_Min;//分
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int TOC_Sec;//秒
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double sa0;//卫星钟差
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double sa1;//卫星钟偏
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double sa2;//卫星钟漂
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//数据块第二行内容：
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double IODE;//数据、星历发布时间(数据期龄)
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double Crs;//轨道半径的正弦调和改正项的振幅（单位：m）
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double deltan;//卫星平均运动速率与计算值之差(rad/s)
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double M0;//参考时间的平近点角(rad)
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//数据块第三行内容：
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double Cuc;//维度幅角的余弦调和改正项的振幅(rad)
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double e;//轨道偏心率
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double Cus;//轨道幅角的正弦调和改正项的振幅(rad)
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double sqrtA;//长半轴平方根
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//数据块第四行内容：
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double TOE;//星历的参考时刻(GPS周内秒)
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double Cic;//轨道倾角的余弦调和改正项的振幅(rad)
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double OMEGA;//参考时刻的升交点赤经
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double Cis;//维度倾角的正弦调和改正项的振幅(rad)
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//数据块第五行内容：
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double i0;//参考时间的轨道倾角(rad)
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double Crc;//轨道平径的余弦调和改正项的振幅(m)
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double omega;//近地点角距
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double deltaomega;//升交点赤经变化率(rad)
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//数据块第六行内容：
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double IDOT;//近地点角距(rad/s)
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double L2code;//L2上的码
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double GPSweek;//GPS周,于TOE一同表示
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double L2Pflag;//L2,p码数据标记
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//数据块第七行内容
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double sACC;//卫星精度
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double sHEA;//卫星健康状态
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double TGD;//sec
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double IODC;//钟的数据龄期
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//数据块第八行内容
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double TTN;//电文发送时间
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double fit;//拟合区间
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double spare1;//空
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double spare2;//空
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}nav_body, *pnav_body;
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//观测值头文件
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typedef struct obs_head
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{
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double ver;//RINEX文件版本号
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char type[30];//文件类型
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double apX;//测站近似位置XYZ（WGS84）
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double apY;
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double apZ;
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double ANTH;//天线高
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double ANTdeltaE;//天线中心对于测站标志在东方向上的偏移量
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double ANTdeltaN;//天线中心对于测站标志在北方向上的偏移量
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int WAFL1;//缺省的L1载波的波长因子
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int WAFL2;//缺省的L2载波的波长因子
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int WAFflag;
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int obstypenum_gps;//GPS观测值类型数量
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int obstypenum_bds;
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char obstype_gps[36];//rinex3.04GPS观测值类型列表
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char obstype_bds[36];
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double interval;//观测值的历元间隔
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int f_y;//第一个观测记录的时刻
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int f_m;
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int f_d;
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int f_h;
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int f_min;
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double f_sec;
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char tsys[5];//时间系统
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}obs_head,*pobs_head;
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//观测值历元数据结构体
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typedef struct obs_epoch
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{
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//观测历元时刻
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int y;
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int m;
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int d;
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int h;
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int min;
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double sec;
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int p_flag;//历元标志
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int sat_num;//当前历元所观测到的卫星数量
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int gps_num;//当前历元所观测到的GPS卫星数量
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int bds_num;//当前历元所观测到的BDS卫星数量
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int sPRN[84];//当前历元所能观测到的卫星的PRN列表
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int sPRN_GPS[25];
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int sPRN_BDS[36];
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}obs_epoch,*pobs_epoch;
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//观测值数据结构体
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typedef struct obs_body
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{
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double obs_gps[100][24];//GPS观测值
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double obs_bds[100][24];//BDS观测值
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}obs_body,*pobs_body;
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//读取O文件******************************************************************************************************//
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//获取O文件历元数
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extern int get_epochnum(FILE* fp_obs)
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{
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int n = 0;//记录历元数
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int satnum = 0;//记录每个历元的卫星数
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char flag;//存放标志符号'>'
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char buff[MAXRINEX];//存放读取的字符串
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while (fgets(buff, MAXRINEX, fp_obs))
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{
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satnum = (int)strtonum(buff, 33, 2);
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strncpy(&flag, buff + 0, 1);
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if (flag == '>')
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{
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n++;
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}
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}
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return n;
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}
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//读取O文件数据头
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extern void read_o_h(FILE* fp_obs, pobs_head obs_h)
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{
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char buff[MAXRINEX] = { 0 };
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char flag = { 0 };
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char* lable = buff + 60;
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int i = 0;
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int j = 0;
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while (fgets(buff, MAXRINEX, fp_obs))
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{
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if (strstr(lable, "RINEX VERSION / TYPE"))
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{
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obs_h->ver = strtonum(buff, 0, 9);
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strncpy(obs_h->type, buff + 20, 30);
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continue;
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}
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else if (strstr(lable, "APPROX POSITION XYZ"))
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{
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obs_h->apX = strtonum(buff, 0, 14);
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obs_h->apY = strtonum(buff, 0 + 14, 14);
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obs_h->apZ = strtonum(buff, 0 + 14 + 14, 14);
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continue;
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}
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else if (strstr(lable, "ANTENNA: DELTA H/E/N"))
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{
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obs_h->ANTH = strtonum(buff, 0, 14);
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obs_h->ANTdeltaE = strtonum(buff, 14, 14);
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obs_h->ANTdeltaN = strtonum(buff, 14 + 14, 14);
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continue;
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}
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else if (strstr(lable, "WAVELENGTH FACT L1/2"))
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{
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obs_h->WAFL1 = (int)strtonum(buff, 0, 6);
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obs_h->WAFL2 = (int)strtonum(buff, 6, 6);
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obs_h->WAFflag = (int)strtonum(buff, 6 + 6, 6);
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continue;
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}
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else if (strstr(lable, "SYS / # / OBS TYPES"))
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{
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char flag = {0};
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strncpy(&flag, buff + 0, 1);
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if (flag == 'G')
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{
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obs_h->obstypenum_gps = (int)strtonum(buff, 4, 2);
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if (obs_h->obstypenum_gps <= 13)
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{
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for (i = 0; i < obs_h->obstypenum_gps; i++)
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{
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strncpy(&(obs_h->obstype_gps[i]), buff + 7 + 4 * i, 3);
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}
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}
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else if (obs_h->obstypenum_gps > 13)
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{
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for (i = 0; i < 13; i++)
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{
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strncpy(&(obs_h->obstype_gps[i]), buff + 7 + 4 * i, 3);
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}
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fgets(buff, MAXRINEX, fp_obs);
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for (i = 0; i < obs_h->obstypenum_gps - 13; i++)
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{
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strncpy(&(obs_h->obstype_gps[i + 13]), buff + 7 + 4 * i, 3);
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}
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}
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continue;
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}
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if (flag == 'C')
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{
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obs_h->obstypenum_bds = (int)strtonum(buff, 4, 2);
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if (obs_h->obstypenum_bds <= 13)
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{
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for (i = 0; i < obs_h->obstypenum_bds; i++)
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{
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strncpy(&(obs_h->obstype_bds[i]), buff + 7 + 4 * i, 3);
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}
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}
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else if (obs_h->obstypenum_bds > 13)
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{
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for (i = 0; i < 13; i++)
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{
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strncpy(&(obs_h->obstype_bds[i]), buff + 7 + 4 * i, 3);
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}
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fgets(buff, MAXRINEX, fp_obs);
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for (i = 0; i < obs_h->obstypenum_bds - 13; i++)
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{
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strncpy(&(obs_h->obstype_bds[i + 13]), buff + 7 + 4 * i, 3);
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}
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}
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continue;
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}
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}
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else if (strstr(lable, "INTERVAL"))
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{
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obs_h->interval = strtonum(buff, 0, 11);
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continue;
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}
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else if (strstr(lable, "TIME OF FIRST OBS"))
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{
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obs_h->f_y = (int)strtonum(buff, 2, 4);
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obs_h->f_m = (int)strtonum(buff, 2 + 6, 4);
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obs_h->f_d = (int)strtonum(buff, 2 + 6 + 6, 4);
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obs_h->f_h = (int)strtonum(buff, 2 + 6 + 6 + 6, 4);
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obs_h->f_min = (int)strtonum(buff, 2 + 6 + 6 + 6 + 6, 4);
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obs_h->f_sec = strtonum(buff, 2 + 6 + 6 + 6 + 6 + 6, 9);
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strncpy(obs_h->tsys, buff + 6 + 6 + 6 + 6 + 6 + 18, 3);
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continue;
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}
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else if (strstr(lable, "END OF HEADER"))
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break;
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}
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}
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//读取O文件数据块
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extern void read_o_b(FILE* fp_obs, pobs_epoch obs_e, pobs_body obs_b, int type_gps, int type_bds)
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{
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int n = 0;//历元数
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char buff[MAXRINEX] = { 0 };
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char flag = { 0 };//判断符号
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while (fgets(buff, MAXRINEX, fp_obs))
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{
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int i = 0;//第i颗卫星
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int j_g = 0;//第j颗GPS卫星
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int k_g = 0;//第j颗GPS卫星的第k个观测值
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int j_c = 0;//第j颗BDS卫星
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int k_c = 0;//第j颗BDS卫星的第k个观测值
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obs_e[n].gps_num = 0;
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obs_e[n].bds_num = 0;
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//按照格式将历元参考时间依次存入
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//除秒以外，均转换成整型
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obs_e[n].y = (int)strtonum(buff, 2, 4);
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obs_e[n].m = (int)strtonum(buff, 7, 2);
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obs_e[n].d = (int)strtonum(buff, 10, 2);
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obs_e[n].h = (int)strtonum(buff, 13, 2);
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obs_e[n].min = (int)strtonum(buff, 16, 2);
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obs_e[n].sec = strtonum(buff, 19, 10);
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obs_e[n].p_flag = (int)strtonum(buff, 31, 1);
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//输入卫星数
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obs_e[n].sat_num = strtonum(buff, 33, 3);
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strncpy(&flag, buff + 0, 1);
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for (i = 0; i < obs_e[n].sat_num; i++)
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{
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//判断是否为GPS卫星
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if (flag == 'G')//获取flag标识，判断GPS卫星为真，读取该卫星PRN号
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{
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obs_e[n].sPRN[i] = strtonum(buff, 1, 2);//将卫星编号存储到第n个历元中，第i个PRN位置
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obs_e[n].sPRN_GPS[j_g] = obs_e[n].sPRN[i];//将GPS卫星编号与总观测卫星号关联
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for (k_g = 0; k_g < type_gps; k_g++)
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{
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obs_b[n].obs_gps[j_g][k_g] = strtonum(buff, 3 + 16 * k_g, 14);
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}
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obs_e[n].gps_num++; j_g++;
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fgets(buff, MAXRINEX, fp_obs);
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strncpy(&flag, buff + 0, 1);
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}
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else if (flag != 'G')//获取flag标识，判断GPS卫星为否
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{
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//判断是否为BDS卫星
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if (flag == 'C')//获取flag标识，判断BDS卫星为真，读取该卫星PRN号
|
||||
{
|
||||
obs_e[n].sPRN[i] = strtonum(buff, 1, 2);//将卫星编号存储到第n个历元中，第i个PRN位置
|
||||
obs_e[n].sPRN_BDS[j_c] = obs_e[n].sPRN[i];//将BDS卫星编号与总观测卫星号关联
|
||||
for (k_c = 0; k_c < type_bds; k_c++)
|
||||
{
|
||||
obs_b[n].obs_bds[j_c][k_c] = strtonum(buff, 3 + 16 * k_c, 14);
|
||||
}
|
||||
obs_e[n].bds_num++; j_c++;
|
||||
fgets(buff, MAXRINEX, fp_obs);
|
||||
strncpy(&flag, buff + 0, 1);
|
||||
}
|
||||
|
||||
else if (flag != 'C')//获取flag标识，判断BDS卫星为真，读取该卫星PRN号
|
||||
{
|
||||
fgets(buff, MAXRINEX, fp_obs);
|
||||
strncpy(&flag, buff + 0, 1);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
n++;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
//读取N文件***************************************************************************************************************//
|
||||
//读取N文件数据头
|
||||
void read_n_h(FILE* fp_nav, pnav_head nav_h)
|
||||
{
|
||||
char buff[MAXRINEX] = { 0 };
|
||||
char* lable = buff;
|
||||
int i = 0;
|
||||
int j = 0;
|
||||
while (fgets(buff, MAXRINEX, fp_nav))
|
||||
{
|
||||
if (strstr(lable, "RINEX VERSION / TYPE"))
|
||||
{
|
||||
nav_h->ver = strtonum(buff, 0, 9);
|
||||
strncpy((nav_h->type), buff + 20, 15);
|
||||
continue;
|
||||
}
|
||||
else if (strstr(lable, "GPSA"))
|
||||
{
|
||||
nav_h->ION_GPSA[0] = strtonum(buff, 6, 12);
|
||||
nav_h->ION_GPSA[1] = strtonum(buff, 6 + 12, 12);
|
||||
nav_h->ION_GPSA[2] = strtonum(buff, 6 + 12 + 12, 12);
|
||||
nav_h->ION_GPSA[3] = strtonum(buff, 6 + 12 + 12 + 12, 12);
|
||||
continue;
|
||||
}
|
||||
else if (strstr(lable, "GPSB"))
|
||||
{
|
||||
nav_h->ION_GPSB[0] = strtonum(buff, 6, 12);
|
||||
nav_h->ION_GPSB[1] = strtonum(buff, 6 + 12, 12);
|
||||
nav_h->ION_GPSB[2] = strtonum(buff, 6 + 12 + 12, 12);
|
||||
nav_h->ION_GPSB[3] = strtonum(buff, 6 + 12 + 12 + 12, 12);
|
||||
continue;
|
||||
}
|
||||
else if (strstr(lable, "BDSA"))
|
||||
{
|
||||
nav_h->ION_BDSA[0] = strtonum(buff, 6, 12);
|
||||
nav_h->ION_BDSA[1] = strtonum(buff, 6 + 12, 12);
|
||||
nav_h->ION_BDSA[2] = strtonum(buff, 6 + 12 + 12, 12);
|
||||
nav_h->ION_BDSA[3] = strtonum(buff, 6 + 12 + 12 + 12, 12);
|
||||
continue;
|
||||
}
|
||||
else if (strstr(lable, "BDSB"))
|
||||
{
|
||||
nav_h->ION_BDSB[0] = strtonum(buff, 6, 12);
|
||||
nav_h->ION_BDSB[1] = strtonum(buff, 6 + 12, 12);
|
||||
nav_h->ION_BDSB[2] = strtonum(buff, 6 + 12 + 12, 12);
|
||||
nav_h->ION_BDSB[3] = strtonum(buff, 6 + 12 + 12 + 12, 12);
|
||||
continue;
|
||||
}
|
||||
else if (strstr(lable, "BDUT"))
|
||||
{
|
||||
nav_h->BDUT[0] = strtonum(buff, 5, 17);
|
||||
nav_h->BDUT[1] = strtonum(buff, 5 + 17, 16);
|
||||
nav_h->BDUT[2] = strtonum(buff, 5 + 17 + 16, 7);
|
||||
nav_h->BDUT[3] = strtonum(buff, 5 + 17 + 16 + 7, 5);
|
||||
continue;
|
||||
}
|
||||
else if (strstr(lable, "GPUT"))
|
||||
{
|
||||
nav_h->GPUT[0] = strtonum(buff, 5, 17);
|
||||
nav_h->GPUT[1] = strtonum(buff, 5 + 17, 16);
|
||||
nav_h->GPUT[2] = strtonum(buff, 5 + 17 + 16, 7);
|
||||
nav_h->GPUT[3] = strtonum(buff, 5 + 17 + 16 + 7, 5);
|
||||
continue;
|
||||
}
|
||||
|
||||
else if (strstr(lable, "LEAP SECONDS"))
|
||||
{
|
||||
nav_h->leap = (int)strtonum(buff, 4, 2);
|
||||
}
|
||||
else if (strstr(lable, "END OF HEADER"))//头文件读取结束
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
//读取N文件数据块
|
||||
void read_n_b(FILE* fp_nav, pnav_body nav_b)
|
||||
{
|
||||
int i_g = 0;//第i_g个GPS卫星数据
|
||||
int i_c = 0;//第i_c个BDS卫星数据
|
||||
char buff[84] = { 0 };
|
||||
char flag = { 0 };//判断符号
|
||||
while (fgets(buff, MAXRINEX, fp_nav))
|
||||
{
|
||||
int j_g = 0;//数据块的第j_g行数据
|
||||
int j_c = 0;//数据块的第j_C行数据
|
||||
strncpy(&flag, buff + 0, 1);
|
||||
if(flag == 'G')
|
||||
{
|
||||
for (j_g = 0; j_g < 8; j_g++)//读取第i_g颗 GPS卫星广播星历("总共包含8行数据") 数据块的第j_g行数据
|
||||
{
|
||||
switch (j_g)
|
||||
{
|
||||
case 0:
|
||||
nav_b[i_g].sPRN = (int)strtonum(buff, 1, 2);
|
||||
nav_b[i_g].TOC_Y = (int)strtonum(buff, 4, 4);
|
||||
nav_b[i_g].TOC_M = (int)strtonum(buff, 9, 2);
|
||||
nav_b[i_g].TOC_D = (int)strtonum(buff, 12, 2);
|
||||
nav_b[i_g].TOC_H = (int)strtonum(buff, 15, 2);
|
||||
nav_b[i_g].TOC_Min = (int)strtonum(buff, 18, 2);
|
||||
nav_b[i_g].TOC_Sec = strtonum(buff, 21, 2);
|
||||
nav_b[i_g].sa0 = strtonum(buff, 23, 19);
|
||||
nav_b[i_g].sa1 = strtonum(buff, 23 + 19, 19);
|
||||
nav_b[i_g].sa2 = strtonum(buff, 23 + 19 + 19, 19);
|
||||
fgets(buff, MAXRINEX, fp_nav);
|
||||
break;
|
||||
case 1:
|
||||
nav_b[i_g].IODE = strtonum(buff, 4, 19);
|
||||
nav_b[i_g].Crs = strtonum(buff, 4 + 19, 19);
|
||||
nav_b[i_g].deltan = strtonum(buff, 4 + 19 + 19, 19);
|
||||
nav_b[i_g].M0 = strtonum(buff, 4 + 19 + 19 + 19, 19);
|
||||
fgets(buff, MAXRINEX, fp_nav);
|
||||
break;
|
||||
case 2:
|
||||
nav_b[i_g].Cuc = strtonum(buff, 4, 19);
|
||||
nav_b[i_g].e = strtonum(buff, 4 + 19, 19);
|
||||
nav_b[i_g].Cus = strtonum(buff, 4 + 19 + 19, 19);
|
||||
nav_b[i_g].sqrtA = strtonum(buff, 4 + 19 + 19 + 19, 19);
|
||||
fgets(buff, MAXRINEX, fp_nav);
|
||||
break;
|
||||
case 3:
|
||||
nav_b[i_g].TOE = strtonum(buff, 4, 19);
|
||||
nav_b[i_g].Cic = strtonum(buff, 4 + 19, 19);
|
||||
nav_b[i_g].OMEGA = strtonum(buff, 4 + 19 + 19, 19);
|
||||
nav_b[i_g].Cis = strtonum(buff, 4 + 19 + 19 + 19, 19);
|
||||
fgets(buff, MAXRINEX, fp_nav);
|
||||
break;
|
||||
case 4:
|
||||
nav_b[i_g].i0 = strtonum(buff, 4, 19);
|
||||
nav_b[i_g].Crc = strtonum(buff, 4 + 19, 19);
|
||||
nav_b[i_g].omega = strtonum(buff, 4 + 19 + 19, 19);
|
||||
nav_b[i_g].deltaomega = strtonum(buff, 4 + 19 + 19 + 19, 19);
|
||||
fgets(buff, MAXRINEX, fp_nav);
|
||||
break;
|
||||
case 5:
|
||||
nav_b[i_g].IDOT = strtonum(buff, 4, 19);
|
||||
nav_b[i_g].L2code = strtonum(buff, 4 + 19, 19);
|
||||
nav_b[i_g].GPSweek= strtonum(buff, 4 + 19 + 19, 19);
|
||||
nav_b[i_g].L2Pflag = strtonum(buff, 4 + 19 + 19 + 19, 19);
|
||||
fgets(buff, MAXRINEX, fp_nav);
|
||||
break;
|
||||
case 6:
|
||||
nav_b[i_g].sACC = strtonum(buff, 4, 19);
|
||||
nav_b[i_g].sHEA = strtonum(buff, 4 + 19, 19);
|
||||
nav_b[i_g].TGD = strtonum(buff, 4 + 19 + 19, 19);
|
||||
nav_b[i_g].IODC = strtonum(buff, 4 + 19 + 19 + 19, 19);
|
||||
fgets(buff, MAXRINEX, fp_nav);
|
||||
break;
|
||||
case 7:
|
||||
nav_b[i_g].TTN = strtonum(buff, 4, 19);
|
||||
nav_b[i_g].fit = strtonum(buff, 4 + 19, 19);
|
||||
nav_b[i_g].spare1 = strtonum(buff, 4 + 19 + 19, 19);
|
||||
nav_b[i_g].spare2 = strtonum(buff, 4 + 19 + 19 + 19, 19);
|
||||
break;
|
||||
}
|
||||
}
|
||||
i_g++;
|
||||
continue;
|
||||
}
|
||||
else if(flag != 'G')
|
||||
{
|
||||
fgets(buff, MAXRINEX, fp_nav);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#endif
|
||||
Reference in new issue
Block a user