cat62

type AltitudeSource uint8

type CalculatedAccelerationCartesian struct {
	Ax int8 // X component of acceleration in 0.25 m/s² units
	Ay int8 // Y component of acceleration in 0.25 m/s² units
}

type CalculatedPositionCartesian struct {
	X int32 // X coordinate in 0.5m units (signed 24-bit, range ±4194 km)
	Y int32 // Y coordinate in 0.5m units (signed 24-bit, range ±4194 km)
}

type CalculatedPositionWGS84 struct {
	Latitude  int32 // Latitude in WGS-84, LSB = 180/2^25 degrees
	Longitude int32 // Longitude in WGS-84, LSB = 180/2^25 degrees
}

type CalculatedRateOfClimbDescent struct {
	Rate int16 // Rate in 6.25 ft/min units
}

type CalculatedTrackBarometricAltitude struct {
	QNH      bool  // QNH correction applied
	Altitude int16 // Altitude in 1/4 FL (25 ft) units (15 bits, signed)
}

type CalculatedTrackGeometricAltitude struct {
	Altitude int16 // Altitude in 6.25 ft units
}

type CalculatedVelocityCartesian struct {
	Vx int16 // X component of velocity in 0.25 m/s units
	Vy int16 // Y component of velocity in 0.25 m/s units
}

type ComposedTrackEntry struct {
	SystemUnitID uint8  // System Unit Identification
	TrackNumber  uint16 // System Track Number (15 bits)
}

type ComposedTrackNumber struct {
	MasterTrack ComposedTrackEntry   // Master track number
	SlaveTracks []ComposedTrackEntry // Slave track numbers (optional)
}

type DataSourceIdentifier struct {
	SAC uint8 // System Area Code
	SIC uint8 // System Identification Code
}

type EstimatedAccuracies struct {
	// SF1: Estimated Accuracy Of Track Position (Cartesian)
	// X and Y components, LSB = 0.5m
	APC *struct {
		X uint16
		Y uint16
	}

	// SF2: XY Covariance Component (signed, LSB = 0.5m)
	COV *int16

	// SF3: Estimated Accuracy Of Track Position (WGS-84)
	// Latitude and Longitude components, LSB = 180/2^25 degrees
	APW *struct {
		Lat uint16
		Lon uint16
	}

	// SF4: Estimated Accuracy Of Calculated Track Geometric Altitude
	// LSB = 6.25 ft
	AGA *uint8

	// SF5: Estimated Accuracy Of Calculated Track Barometric Altitude
	// LSB = 1/4 FL
	ABA *uint8

	// SF6: Estimated Accuracy Of Track Velocity (Cartesian)
	// X and Y components, LSB = 0.25 m/s
	ATV *struct {
		X uint8
		Y uint8
	}

	// SF7: Estimated Accuracy Of Acceleration (Cartesian)
	// X and Y components, LSB = 0.25 m/s²
	AA *struct {
		X uint8
		Y uint8
	}

	// SF8: Estimated Accuracy Of Rate Of Climb/Descent
	// LSB = 6.25 feet/minute
	ARC *uint8
}

type LongitudinalAcceleration uint8

type MeasuredFlightLevel struct {
	FlightLevel int16 // Flight level in 1/4 FL units
}

type Mode4Status uint8

type Mode5Status uint8

type ModeOfMovement struct {
	Transversal  TransversalAcceleration  // Transversal Acceleration (bits 8-7)
	Longitudinal LongitudinalAcceleration // Longitudinal Acceleration (bits 6-5)
	Vertical     VerticalRate             // Vertical Rate (bits 4-3)
	ADF          bool                     // Altitude Discrepancy Flag (bit 2)
}

type ServiceIdentification struct {
	ServiceID uint8
}

type SourceOfTargetIdentification uint8

type SystemTrackUpdateAges struct {
	TrackAge *uint8  // SF1: Track age (LSB = 1/4 s, max 63.75s)
	PSRAge   *uint8  // SF2: PSR age (LSB = 1/4 s, max 63.75s)
	SSRAge   *uint8  // SF3: SSR age (LSB = 1/4 s, max 63.75s)
	MDSAge   *uint8  // SF4: Mode S age (LSB = 1/4 s, max 63.75s)
	ADSAge   *uint16 // SF5: ADS-C age (LSB = 1/4 s, max 16383.75s) - 2 bytes!
	ESAge    *uint8  // SF6: ADS-B Extended Squitter age (LSB = 1/4 s)
	VDLAge   *uint8  // SF7: ADS-B VDL Mode 4 age (LSB = 1/4 s)
	UATAge   *uint8  // SF8: ADS-B UAT age (LSB = 1/4 s)
	LOPAge   *uint8  // SF9: Loop age (LSB = 1/4 s)
	MLTAge   *uint8  // SF10: Multilateration age (LSB = 1/4 s)
}

type TargetIdentification struct {
	STI      SourceOfTargetIdentification // Source of Target Identification
	Callsign string                       // 8-character callsign
}

type TargetSizeOrientation struct {
	Length      *uint8 // Target length in meters (7 bits, optional)
	Orientation *uint8 // Orientation in 360/128 degree units (7 bits, optional)
	Width       *uint8 // Target width in meters (7 bits, optional)
}

type TimeOfTrackInformation struct {
	Time uint32 // Time in 1/128 second units (only 24 bits used)
}

type Track struct {
	// FRN 1: I062/010 - Data Source Identifier (mandatory)
	DataSourceIdentifier *DataSourceIdentifier

	// FRN 3: I062/015 - Service Identification
	ServiceIdentification *ServiceIdentification

	// FRN 4: I062/070 - Time Of Track Information (mandatory)
	TimeOfTrackInformation *TimeOfTrackInformation

	// FRN 5: I062/105 - Calculated Track Position (WGS-84)
	CalculatedPositionWGS84 *CalculatedPositionWGS84

	// FRN 6: I062/100 - Calculated Track Position (Cartesian)
	CalculatedPositionCartesian *CalculatedPositionCartesian

	// FRN 7: I062/185 - Calculated Track Velocity (Cartesian)
	CalculatedVelocityCartesian *CalculatedVelocityCartesian

	// FRN 8: I062/210 - Calculated Acceleration (Cartesian)
	CalculatedAccelerationCartesian *CalculatedAccelerationCartesian

	// FRN 9: I062/060 - Track Mode 3/A Code
	TrackMode3ACode *TrackMode3ACode

	// FRN 10: I062/245 - Target Identification
	TargetIdentification *TargetIdentification

	// FRN 12: I062/040 - Track Number (mandatory)
	TrackNumber *TrackNumber

	// FRN 13: I062/080 - Track Status (mandatory)
	TrackStatus *TrackStatus

	// FRN 14: I062/290 - System Track Update Ages
	SystemTrackUpdateAges *SystemTrackUpdateAges

	// FRN 15: I062/200 - Mode of Movement
	ModeOfMovement *ModeOfMovement

	// FRN 17: I062/136 - Measured Flight Level
	MeasuredFlightLevel *MeasuredFlightLevel

	// FRN 18: I062/130 - Calculated Track Geometric Altitude
	CalculatedTrackGeometricAltitude *CalculatedTrackGeometricAltitude

	// FRN 19: I062/135 - Calculated Track Barometric Altitude
	CalculatedTrackBarometricAltitude *CalculatedTrackBarometricAltitude

	// FRN 20: I062/220 - Calculated Rate Of Climb/Descent
	CalculatedRateOfClimbDescent *CalculatedRateOfClimbDescent

	// FRN 22: I062/270 - Target Size & Orientation
	TargetSizeOrientation *TargetSizeOrientation

	// FRN 23: I062/300 - Vehicle Fleet Identification
	VehicleFleetIdentification *VehicleFleetIdentification

	// FRN 25: I062/120 - Track Mode 2 Code
	TrackMode2Code *TrackMode2Code

	// FRN 26: I062/510 - Composed Track Number
	ComposedTrackNumber *ComposedTrackNumber

	// FRN 27: I062/500 - Estimated Accuracies
	EstimatedAccuracies *EstimatedAccuracies
}

type TrackMode2Code struct {
	Code uint16 // Mode-2 reply in octal (12 bits)
}

type TrackMode3ACode struct {
	V    bool   // Code validated (false=validated, true=not validated)
	G    bool   // Garbled code
	CH   bool   // Change in Mode 3/A (true=changed)
	Code uint16 // Mode-3/A reply in octal (12 bits: A4A2A1 B4B2B1 C4C2C1 D4D2D1)
}

type TrackNumber struct {
	Number uint16
}

type TrackStatus struct {
	// Octet 1 (mandatory)
	MON bool           // Monosensor track (false=multisensor)
	SPI bool           // SPI present
	MRH bool           // Most Reliable Height: true=geometric, false=barometric
	SRC AltitudeSource // Source of calculated track altitude
	CNF bool           // Confirmed track (false=confirmed, true=tentative)

	// First Extension
	SIM bool // Simulated track
	TSE bool // Last message transmitted to user for the track
	TSB bool // First message transmitted to user for the track
	FPC bool // Flight plan correlated
	AFF bool // ADS-B data inconsistent with other surveillance
	STP bool // Slave Track Promotion
	KOS bool // Background service used (false=complementary)

	// Second Extension
	AMA bool        // Track resulting from amalgamation
	MD4 Mode4Status // Mode 4 interrogation status
	ME  bool        // Military Emergency present
	MI  bool        // Military Identification present
	MD5 Mode5Status // Mode 5 interrogation status

	// Third Extension
	CST bool // Coasting (age of last update > threshold)
	PSR bool // Age of last PSR update > threshold
	SSR bool // Age of last SSR update > threshold
	MDS bool // Age of last Mode S update > threshold
	ADS bool // Age of last ADS-B update > threshold
	SUC bool // Special Used Code
	AAC bool // Assigned Mode A Code Conflict

	// Fourth Extension
	SDS  uint8 // Surveillance Data Status (2 bits)
	EMS  uint8 // Emergency Status (3 bits)
	PFT  bool  // Potential False Track
	FPLT bool  // Flight plan track

	// Fifth Extension
	DUPT bool // Duplicate Mode 3/A Code
	DUPF bool // Duplicate Flight Plan
	DUPM bool // Duplicate Flight Plan due to manual correlation
	SFC  bool // Surface target
	IDD  bool // Duplicate Flight-ID
	IEC  bool // Inconsistent Emergency Code
	MLAT bool // Age of last MLAT update > threshold

	// Sixth Extension
	M5I bool // Age of last Mode 5 interrogation update > threshold
	// contains filtered or unexported fields
}

type TransversalAcceleration uint8

type VehicleFleetIdentification struct {
	VFI VehicleFleetType
}

type VehicleFleetType uint8

type VerticalRate uint8