ephemeris.h

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/*
 * Copyright (C) 2010 Swift Navigation Inc.
 * Contact: Henry Hallam <henry@swift-nav.com>
 *
 * This source is subject to the license found in the file 'LICENSE' which must
 * be be distributed together with this source. All other rights reserved.
 *
 * THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
 * EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef LIBSWIFTNAV_EPHEMERIS_H
#define LIBSWIFTNAV_EPHEMERIS_H

#include "gpstime.h"
#include "common.h"

typedef struct {
  double tgd;
  double crs, crc, cuc, cus, cic, cis;
  double dn, m0, ecc, sqrta, omega0, omegadot, w, inc, inc_dot;
  double af0, af1, af2;
  gps_time_t toe, toc;
  u8 valid;
  u8 healthy;
  u8 prn;
} ephemeris_t;


int calc_sat_pos(double pos[3], double vel[3],
                 double *clock_err, double *clock_rate_err,
                 const ephemeris_t *ephemeris,
                 gps_time_t tot);

double predict_range(double rx_pos[3],
                     gps_time_t tot,
                     ephemeris_t *ephemeris);

u8 ephemeris_good(ephemeris_t eph, gps_time_t t);

#endif /* LIBSWIFTNAV_EPHEMERIS_H */