earth_induction_model.h

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/***********************************************************************/
#ifndef NAV_ALGORITHMS_EARTH_INDUCTION_MODEL_H_
#define NAV_ALGORITHMS_EARTH_INDUCTION_MODEL_H_
 
#include "embedded_memory.h"
#include "embedded_math.h"
 
enum { N_AREAS=8, N_COEFFICIENTS=10};
 
typedef struct
{
  float declination; 
  float inclination; 
  bool valid;
} induction_values;
 
typedef struct
{
  double longitude_limit_west;
  double longitude_limit_east;
  double latitude__limit_south;
  double latitude__limit_north;
  double coefficients_declination[N_COEFFICIENTS];
  double coefficients_inclination[N_COEFFICIENTS];
} induction_model_area_t;
 
class earth_induction_model_t
{
private:
  static const induction_model_area_t induction_model_area[N_AREAS]; 
public:
  earth_induction_model_t( void)
  {};
 
  induction_values get_induction_data_at( double longitude, double latitude);
};
 
extern earth_induction_model_t earth_induction_model; 
 
#endif /* NAV_ALGORITHMS_EARTH_INDUCTION_MODEL_H_ */