structs.h

OpenSource GPS is software for x86 PCs that allows you to acquire, track and demodulate signals from

//
//  This is the primary data structure that provides access
//  to the components of each channel
#ifndef STRUCTS_H
#define STRUCTS_H

struct channel
{
  int  state;
  long code_freq,carrier_freq,doppler,carrier_corr;
  char message[1500],tow_sync,prn,bit,frame_ready;
  int  word_error[5];
  int  frame_bit,bit_counter;
  int  offset,codes,n_freq,del_freq;
  int  t_count,ms_count,ms_set,i_confirm;
  int  ms_epoch,n_frame,ch_time,i_count;
  int  con_thresh,n_thresh,sfid,missed,page5;
  int  i_dith,q_dith,i_prompt,q_prompt;
  long sum,avg,old_theta,old_q_sum,th_rms;
  long dfreq,dfreq1,dcarr1,dcarr,cycle_sum;
  long old_carr_dco_phase;
  long q_dith_20,q_prom_20,i_dith_20,i_prom_20;
  long prompt_mag,dith_mag;
  long tr_bit_time,meas_bit_time,TOW,TLM;
  long carrier_counter;
  long  d_carr_phase;
  double int_carr_phase,Pr,dPr,Tropo,Iono;
  unsigned long fifo0,fifo1,ms_sign;
  unsigned int carr_dco_phase,carr_cycle_l,carr_cycle_h;
  unsigned int epoch,code_phase,code_dco_phase;
  float CNo;
};



struct hms
{
 int deg,min;
 float sec;
};

struct almanac          // Approximate orbital parameters
{
  float w,ety,inc,rra,sqa,lan,aop,ma,toa,af0,af1;
  char text_message[23];
  int health,week,sat_file;
};

struct ephemeris        // Precise orbital parameters
{
 int iode,iodc,ura,valid,health,week;
 double dn,tgd,toe,toc,omegadot,idot,cuc,cus,crc,crs,cic,cis;
 double ma,e,sqra,w0,inc0,w,wm,ety,af0,af1,af2;
};

struct satvis
{
  float azimuth,elevation,doppler;
  float x,y,z;
};

struct ecef
{
  double x,y,z;
};

struct eceft
{
  double x,y,z,tb;
  float az,el;
};

struct llh
{
  double lat,lon,hae;
};

struct pvt
{
   double x,y,z,dt;
   double xv,yv,zv,df;
};

struct velocity
{
  double  east,north,up;
  double  clock_err;
  ecef    x,y,z;
};

struct state
{
  velocity  vel;
  eceft     pos;
  llh       loc;
  ecef      north,east,up;
};

#endif