net.sf.marineapi.nmea.sentence
Interface VTGSentence

All Superinterfaces:

Sentence

public interface VTGSentence
extends Sentence

Course and speed over the ground. True and magnetic COG, speed provided in km/h and knots. Mode (the last "A" in example sentence) was added in NMEA 2.3 and may not always be available.

Example:
$GPVTG,46.96,T,,,16.89,N,31.28,K,A*43

Version:

$Revision: 72 $

Author:

Kimmo Tuukkanen

Field Summary

static char	KMPH Units indicator for kilometers per hour
static char	KNOT Units indicator for knots (nautical miles per hour)
static char	MAGNETIC Char indicator for "magnetic"
static char	MODE_AUTOMATIC Operating in automatic mode (2D/3D).
static char	MODE_MANUAL Operating in manual mode (forced 2D or 3D).
static char	TRUE Char indicator for "true"

Fields inherited from interface net.sf.marineapi.nmea.sentence.Sentence

ADDRESS_FIELD, BEGIN_CHAR, CHECKSUM_DELIMITER, FIELD_DELIMITER, MAX_LENGTH, TERMINATOR

Method Summary

double	getMagneticCourse() Get the magnetic course over ground.
GpsMode	getMode() Get the GPS receiver operating mode.
double	getSpeedKmh() Get current speed over ground, in kilometers per hour.
double	getSpeedKnots() Get speed over ground in knots.
double	getTrueCourse() Get the true course over ground.
void	setMagneticCourse(double mcog) Set the magnetic course over ground.
void	setMode(GpsMode mode) Set the GPS receiver operating mode.
void	setSpeedKmh(double kmh) Set the current speed over ground.
void	setSpeedKnots(double knots) Set the speed over ground, in knots.
void	setTrueCourse(double tcog) Set the true course over ground.

Methods inherited from interface net.sf.marineapi.nmea.sentence.Sentence

getFieldCount, getSentenceId, getTalkerId, isProprietary, isValid, setTalkerId, toSentence, toString

Field Detail

TRUE

static final char TRUE

Char indicator for "true"

See Also:

Constant Field Values

MAGNETIC

static final char MAGNETIC

Char indicator for "magnetic"

See Also:

Constant Field Values

KMPH

static final char KMPH

Units indicator for kilometers per hour

See Also:

Constant Field Values

KNOT

static final char KNOT

Units indicator for knots (nautical miles per hour)

See Also:

Constant Field Values

MODE_MANUAL

static final char MODE_MANUAL

Operating in manual mode (forced 2D or 3D).

See Also:

Constant Field Values

MODE_AUTOMATIC

static final char MODE_AUTOMATIC

Operating in automatic mode (2D/3D).

See Also:

Constant Field Values

Method Detail

getMagneticCourse

double getMagneticCourse()

Get the magnetic course over ground.

Returns:

Magnetic course

Throws:

DataNotAvailableException - If the data is not available.

ParseException - If the field contains unexpected or illegal value.

getMode

GpsMode getMode()

Get the GPS receiver operating mode. The field may not be available, depending on the NMEA version.

Returns:

GpsMode enum

Throws:

DataNotAvailableException - If the data is not available.

ParseException - If the field contains unexpected or illegal value.

getSpeedKmh

double getSpeedKmh()

Get current speed over ground, in kilometers per hour.

Returns:

Speed in km/h

Throws:

DataNotAvailableException - If the data is not available.

ParseException - If the field contains unexpected or illegal value.

getSpeedKnots

double getSpeedKnots()

Get speed over ground in knots.

Returns:

Speed in knots (nautical miles per hour)

Throws:

DataNotAvailableException - If the data is not available.

ParseException - If the field contains unexpected or illegal value.

getTrueCourse

double getTrueCourse()

Get the true course over ground.

Returns:

True course, in degrees

Throws:

DataNotAvailableException - If the data is not available.

ParseException - If the field contains unexpected or illegal value.

setMagneticCourse

void setMagneticCourse(double mcog)

Set the magnetic course over ground.

Parameters:

mcog - Course in degrees.

setMode

void setMode(GpsMode mode)

Set the GPS receiver operating mode.

Parameters:

mode - Mode to set

setSpeedKmh

void setSpeedKmh(double kmh)

Set the current speed over ground.

Parameters:

kmh - Speed in kilometers per hour (km/h).

setSpeedKnots

void setSpeedKnots(double knots)

Set the speed over ground, in knots.

Parameters:

knots - Speed in knots (nautical miles per hour)

setTrueCourse

void setTrueCourse(double tcog)

Set the true course over ground.

Parameters:

tcog - True course, in degrees

Throws:

IllegalArgumentException - If specified course is out of bounds 0..360 degrees.