lejos.gps
Class VTGSentence

java.lang.Object
  lejos.gps.NMEASentence
      lejos.gps.VTGSentence

public class VTGSentence
extends NMEASentence

VTGSentence is a Class designed to manage VTG Sentences from a NMEA GPS Receiver $GPVTG Track Made Good and Ground Speed. eg1. $GPVTG,360.0,T,348.7,M,000.0,N,000.0,K*43 eg2. $GPVTG,054.7,T,034.4,M,005.5,N,010.2,K*41 054.7,T True course made good over ground, degrees 034.4,M Magnetic course made good over ground, degrees 005.5,N Ground speed, N=Knots 010.2,K Ground speed, K=Kilometers per hour eg3. for NMEA 0183 version 3.00 active the Mode indicator field is added at the end $GPVTG,054.7,T,034.4,M,005.5,N,010.2,K,A*53 A Mode indicator (A=Autonomous, D=Differential, E=Estimated, N=Data not valid)

Author:

Juan Antonio Brenha Moral (major recoding by BB)

Field Summary

static String

HEADER

Fields inherited from class lejos.gps.NMEASentence

nmeaSentence, st

Constructor Summary

VTGSentence()

Method Summary

String	getHeader() Returns the NMEA header for this sentence.
float	getMagneticCourse() Get magnetic course, in degrees.
float	getSpeed() Get Speed in Kilometers
float	getTrueCourse() Get true course, in degrees.
protected void	parse(String sentence) Parase a RMC Sentence $GPVTG,054.7,T,034.4,M,005.5,N,010.2,K,A*53

Methods inherited from class lejos.gps.NMEASentence

checkRefresh, degreesMinToDegrees, getTimeStamp, isValid, setSentence

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

HEADER

public static final String HEADER

See Also:

Constant Field Values

Constructor Detail

VTGSentence

public VTGSentence()

Method Detail

getHeader

public String getHeader()

Returns the NMEA header for this sentence.

Specified by:

getHeader in class NMEASentence

Returns:

The NMEA header string ($GPGGA, $GPVTG, etc...)

getSpeed

public float getSpeed()

Get Speed in Kilometers

Returns:

the speed in kilometers per ???

getTrueCourse

public float getTrueCourse()

Get true course, in degrees.

Returns:

the true course in degrees 0.0 to 360.0

getMagneticCourse

public float getMagneticCourse()

Get magnetic course, in degrees. Holux-1200 GPS doesn't have a built in magnetic compass so this value is blank.

Returns:

the magnetic course in degrees 0.0 to 360.0

parse

protected void parse(String sentence)

Parase a RMC Sentence $GPVTG,054.7,T,034.4,M,005.5,N,010.2,K,A*53

Specified by:

parse in class NMEASentence