rinex

type Coord struct {
	X, Y, Z float64
}

type CoordNEU struct {
	N, E, Up float64
}

type DiffOptions struct {
	SatSys      string // satellite systems GRE...
	CheckHeader bool   // also compare the RINEX header
}

type Eph interface {
	// Validate checks the ephemeris.
	Validate() error
	// contains filtered or unexported methods
}

type EphBDS struct {
	PRN PRN
	TOC time.Time
}

type EphGAL struct {
	PRN PRN
	TOC time.Time
}

type EphGLO struct {
	PRN PRN
	TOC time.Time
}

type EphGPS struct {
	PRN PRN

	// Clock
	TOC            time.Time // Time of Clock, clock reference epoch
	ClockBias      float64   // sc clock bias in seconds
	ClockDrift     float64   // sec/sec
	ClockDriftRate float64   // sec/sec2

	IODE   float64 // Issue of Data, Ephemeris
	Crs    float64 // meters
	DeltaN float64 // radians/sec
	M0     float64 // radians

	Cuc   float64 // radians
	Ecc   float64 // Eccentricity
	Cus   float64 // radians
	SqrtA float64 // sqrt(m)

	Toe    float64 // time of ephemeris (sec of GPS week)
	Cic    float64 // radians
	Omega0 float64 // radians
	Cis    float64 // radians

	I0       float64 // radians
	Crc      float64 // meters
	Omega    float64 // radians
	OmegaDot float64 // radians/sec

	IDOT    float64 // radians/sec
	L2Codes float64
	ToeWeek float64 // GPS week (to go with TOE) Continuous
	L2PFlag float64

	URA    float64 // SV accuracy in meters
	Health float64 // SV health (bits 17-22 w 3 sf 1)
	TGD    float64 // seconds
	IODC   float64 // Issue of Data, clock

	Tom         float64 // transmission time of message, seconds of GPS week
	FitInterval float64 // Fit interval in hours
}

type EphIRNSS struct {
	PRN PRN
	TOC time.Time
}

type EphQZSS struct {
	PRN PRN
	TOC time.Time
}

type EphSBAS struct {
	PRN PRN
	TOC time.Time
}

type Epoch struct {
	Time    time.Time // epoch time
	Flag    int8
	NumSat  uint8
	ObsList []SatObs
}

type NavDecoder struct {
	// The Header is valid after NewNavDecoder or Reader.Reset. The header must not necessarily exist,
	// e.g. if you want to read from a stream. Then ErrNoHeader will be returned.
	Header NavHeader
	// contains filtered or unexported fields
}

type NavFile struct {
	*RnxFil
	Header NavHeader
}

type NavHeader struct {
	RINEXVersion float32         // RINEX Format version
	RINEXType    string          // RINEX File type. O for Obs
	SatSystem    SatelliteSystem // Satellite System. System is "Mixed" if more than one.

	Pgm   string // name of program creating this file
	RunBy string // name of agency creating this file
	Date  string // date and time of file creation TODO time.Time

	Comments []string // * comment lines
	// contains filtered or unexported fields
}

type Obs struct {
	Val float64
	LLI int8 // loss of lock indicator
	SNR int8 // signal-to-noise ratio
}

type ObsDecoder struct {
	// The Header is valid after NewObsDecoder or Reader.Reset. The header must exist,
	// otherwise ErrNoHeader will be returned.
	Header ObsHeader
	// contains filtered or unexported fields
}

type ObsFil struct {
	*RnxFil
	Header ObsHeader
	Opts   Options
}

type ObsHeader struct {
	RINEXVersion float32         // RINEX Format version
	RINEXType    string          // RINEX File type. O for Obs
	SatSystem    SatelliteSystem // Satellite System. System is "Mixed" if more than one.

	Pgm   string // name of program creating this file
	RunBy string // name of agency creating this file
	Date  string // date and time of file creation TODO time.Time

	Comments []string // * comment lines

	MarkerName, MarkerNumber, MarkerType string // antennas' marker name, *number and type

	Observer, Agency string

	ReceiverNumber, ReceiverType, ReceiverVersion string
	AntennaNumber, AntennaType                    string

	Position     Coord    // Geocentric approximate marker position [m]
	AntennaDelta CoordNEU // North,East,Up deltas in [m]

	ObsTypes map[string][]string

	SignalStrengthUnit string
	Interval           float64 // Observation interval in seconds
	TimeOfFirstObs     time.Time
	TimeOfLastObs      time.Time
	LeapSeconds        int // The current number of leap seconds
	NSatellites        int // Number of satellites, for which observations are stored in the file
	// contains filtered or unexported fields
}

type ObsStat struct {
	NumEpochs      int       `json:"numEpochs"`
	Sampling       int       `json:"sampling"`
	TimeOfFirstObs time.Time `json:"timeOfFirstObs"`
	TimeOfLastObs  time.Time `json:"timeOfLastObs"`
}

type Options struct {
	SatSys string // satellite systems GRE...
}

type PRN struct {
	Sys SatelliteSystem
	Num int8 // number

}

type RnxFil struct {
	Path string

	FourCharID     string
	MonumentNumber int
	ReceiverNumber int
	CountryCode    string // ISO 3char
	StartTime      time.Time
	DataSource     string // [RSU]
	FilePeriod     string // 15M, 01D
	DataFreq       string // 30S, not for nav files // TODO make type frequency!!
	DataType       string // The data type abbreviations GO, RO, MN, MM, ...
	Format         string // rnx, crx, etc. Attention: Format and Hatanaka are dependent!
	Compression    string // gz, ...

}

type SatObs struct {
	Prn  PRN
	Obss map[string]Obs // L1C: obs
}

type SatelliteSystem int

type SyncEpochs struct {
	Epo1 *Epoch
	Epo2 *Epoch
}