Android Nmea information sorting

NMEA information in Android follows NMEA-0183 protocol.

NEAM-0183 message analysis

GPGGA (location information)

$GPGGA,HHMMSS.SS,DDMM.MMMM,S,DDDMM.MMMM,S,N,QQ,PP.P,SAAAAA.AA,M,±XXXX.XX,M,SSS,AAAA*CC

Example:

$GPGGA,092204.999,4250.5589,S,14718.5084,E,1,04,24.4,M,19.7,M,0000*1F

Field 0: $GPGGA, statement ID, indicating that the statement is Global # Positioning # System # Fix # Data (GGA) GPS Positioning information

Field 1: UTC time, hhmmss SSS, hour, minute and second format

Field 2: latitude ddmm Mmmm, degree division format (if the leading digits are insufficient, supplement 0)

Field 3: latitude N (north latitude) or S (south latitude)

Field 4: longitude dddmm Mmmm, degree division format (if the leading digits are insufficient, supplement 0)

Field 5: longitude E e (east longitude) or W (west longitude)

Field 6: GPS status, 0 = NOT valid, 1 = GPS FIX, 2 = DGPS, 3 = invalid PPS, 4 = RTK FIX, 5=RTK FLOAT, 6 = estimating

Field 7: number of satellites in use (00 - 12) (fill in 0 if the leading digits are insufficient)

Field 8: HDOP horizontal accuracy factor (0.5 - 99.9)

Altitude field (- 9999.9999)

Field 10: unit: M (meters)

Field 11: height of earth ellipsoid relative to geoid # WGS84 geoid Division

Field 12: WGS84 level division unit: M (M)

Field 13: differential time (the number of seconds from receiving the differential signal, which will be empty if it is not differential positioning)

Field 14: differential station ID No. 0000 - 1023 (if the leading digits are insufficient, fill in 0. If it is not differential positioning, it will be empty)

Field 15: check value

GPGSA (current satellite information)

$GPGSA,A,B,CC,DD,EE,FF,GG,HH,II,JJ,KK,MM,NN,OO,P.P,Q.Q,R.R*CC

Example:

$GPGSA,A,3,01,20,19,13,40.4,24.4,32.2*0A

Field 0: $GPGSA, statement ID, indicating that the statement is the current satellite information of GPS # DOP # and # Active # Satellites (GSA)

Field 1: positioning mode (select 2D/3D), A = automatic selection, M = manual selection

Field 2: positioning type, 1 = not positioned, 2=2D positioning, 3=3D positioning

Field 3: PRN code (pseudo-random noise code), the number of satellite PRN code being used in channel 1 (00) (if the preamble is insufficient, supplement 0)

Field 4: PRN code (pseudo-random noise code), the number of satellite PRN code being used in channel 2 (00) (if the preamble is insufficient, supplement 0)

Field 5: PRN code (pseudo-random noise code), the number of satellite PRN code being used in channel 3 (00) (if the preamble is insufficient, supplement 0)

Field 6: PRN code (pseudo-random noise code), the number of satellite PRN code being used in channel 4 (00) (if the preamble is insufficient, supplement 0)

Field 7: PRN code (pseudo-random noise code), the number of satellite PRN code being used in channel 5 (00) (if the preamble is insufficient, supplement 0)

Field 8: PRN code (pseudo-random noise code), number of satellite PRN code being used in channel 6 (00) (if the preamble is insufficient, supplement 0)

Field 9: PRN code (pseudo-random noise code), the number of satellite PRN code being used in channel 7 (00) (if the preamble is insufficient, supplement 0)

Field 10: PRN code (pseudo-random noise code), the number of satellite PRN code being used in channel 8 (00) (if the preamble is insufficient, supplement 0)

Field 11: PRN code (pseudo-random noise code), number of satellite PRN code being used in channel 9 (00) (if the leading digits are insufficient, supplement 0)

Field 12: PRN code (pseudo-random noise code), number of satellite PRN code being used in channel 10 (00) (if the preamble is insufficient, supplement 0)

Field 13: PRN code (pseudo-random noise code), number of satellite PRN code being used in channel 11 (00) (if the preamble is insufficient, supplement 0)

Field 14: PRN code (pseudo-random noise code), the number of satellite PRN code being used in channel 12 (00) (if the preamble is insufficient, supplement 0)

Field 15: PDOP integrated position accuracy factor (0.5 - 99.9)

Field 16: HDOP horizontal accuracy factor (0.5 - 99.9)

Field 17: VDOP vertical accuracy factor (0.5 - 99.9)

Field 18: check value

Gpgsv (visible satellite information)

$GPGSV,T,M,N,II,EE,AAA,SS,...II,EE,AAA,SS,*CC

Example:

$GPGSV,3,1,10,20,78,331,45,01,59,235,47,22,41,069,13,32,252,45*70

Field 0: $GPGSV, statement ID, indicating that the statement is GPS # Satellites # in # View (GSV) visible satellite information

Field 1: total number of GSV statements this time (1 - 3)

Field 2: This GSV statement is the first (1 - 3) of this GSV statement

Field 3: total number of currently visible satellites (00 - 12) (fill in 0 if the leading digits are insufficient)

Field 4: PRN # code (pseudo-random noise code) (01 - 32) (if the leading digits are insufficient, supplement 0)

Field 5: satellite elevation (00 - 90) degrees (0 if the leading digits are insufficient)

Field 6: Satellite azimuth (00 - 359) degrees (0 if the leading digits are insufficient)

Field 7: SNR (00-99) dbHz

Field 8: PRN # code (pseudo-random noise code) (01 - 32) (if the leading digits are insufficient, supplement 0)

Field 9: satellite elevation (00 - 90 degrees) (if the leading digits are insufficient, supplement 0)

Field 10: Satellite azimuth (00 - 359) degrees (0 if the leading digits are insufficient)

Field 11: SNR (00-99) dbHz

Field 12: PRN # code (pseudo-random noise code) (01 - 32) (if the leading digits are insufficient, supplement 0)

Field 13: satellite elevation (00 - 90) degrees (0 if the leading digits are insufficient)

Field 14: Satellite azimuth (00 - 359) degrees (0 if the leading digits are insufficient)

Field 15: SNR (00-99) dbHz

Field 16: check value

GPRMC (recommended location information data format)

$GPRMC,HHMMSS.SS,A,DDMM.MMM,N,DDDMM.MMM,W,Z.Z,Y.Y,DDMMYY,D.D,V*CC

Example:

$GPRMC,024813.640,A,3158.4608,N,11848.3737,E,10.05,324.27,150706,A*50

Field 0: $GPRMC, statement ID, indicating that the statement is Recommended Minimum Specific GPS / transmit Data (RMC)

Field 1: UTC time, hhmmss SSS format

Field 2: status, A = positioned, V = not positioned

Field 3: latitude ddmm Mmmm, degree division format (if the leading digits are insufficient, supplement 0)

Field 4: latitude N (north latitude) or S (south latitude)

Field 5: longitude dddmm Mmmm, degree division format (if the leading digits are insufficient, supplement 0)

Field 6: longitude E e (east longitude) or W (west longitude)

Field 7: speed, Knots

Field 8: azimuth, degrees

Field 9: UTC date, DDMMYY format

Field 10: magnetic declination, (000 - 180) degrees (if the leading digits are insufficient, supplement 0)

Field 11: magnetic declination direction, E = east, W = west

Field 16: check value

GPVTG (ground speed information)

$GPVTG,TTT,C,TTT,C,GGG.GG,U,GGG,GG,U*CC

Example:

$GPVTG,89.68,T,M,0.00,N,0.0,K*5F

Field 0: $GPVTG, statement ID, indicating that the statement is Track # Made # Good # and # Ground # Speed (VTG) Ground Speed information

Field 1: motion angle, 000 - 359, (if the leading digits are insufficient, supplement 0)

Field 2: T = true north reference system

Field 3: motion angle, 000 - 359, (if the leading digits are insufficient, supplement 0)

Field 4: M = magnetic north reference frame

Field 5: horizontal movement speed (0.00) (if the leading digits are insufficient, supplement 0)

Field 6: N = section, Knots

Field 7: horizontal movement speed (0.00) (if the leading digits are insufficient, supplement 0)

Field 8: K = km/h, km/h

Field 9: check value

GPGLL (geographic location information)

$GPGLL,DDMM.MMMM,S,DDDMM.MMMM,S,HHMMSS.SS,S*CC

Example:

$GPGLL,4250.5589,S,14718.5084,E,092204.999,A*2D

Field 0: $GPGLL, statement ID, indicating that the statement is Geographic Position (GLL) Geographic location information

Field 1: latitude ddmm Mmmm, degree division format (if the leading digits are insufficient, supplement 0)

Field 2: latitude N (north latitude) or S (south latitude)

Field 3: longitude dddmm Mmmm, degree division format (if the leading digits are insufficient, supplement 0)

Field 4: longitude E e (east longitude) or W (west longitude)

Field 5: UTC time, hhmmss SSS format

Field 6: status, A = positioned, V = not positioned

Field 7: check value

Android get NMEA data interface

The core is to get data from the location manager

When 5 < = api < = 24, available api:

public boolean addNmeaListener (GpsStatus.NmeaListener listener)

24 <= api <= 30

public boolean addNmeaListener (OnNmeaMessageListener listener)

24 <= api

public boolean addNmeaListener (OnNmeaMessageListener listener, Handler handler)

30 <= api

public boolean addNmeaListener (Executor executor, OnNmeaMessageListener listener)

Android callback frequency statistics of the above data formats

Test the phone viov z6

GGA: location information, call back once every 1s.

   16: 04-08 15:35:51.637 I/NmeaActivity(11837): NmeaGGA{, time='', latitude='', latitudeHemi='', longitude='', longitudeHemi='', fixQuality='0', numSatellites='', horizontalDilutionOfPrecision='', altitude='', altitudeUnits='', heightOfGeoid='', heightOfGeoidUnits='', timeSinceLastDgpsUpdate='', timeSinceLastDgpsUpdateID=''}
   32: 04-08 15:35:52.364 I/NmeaActivity(11837): NmeaGGA{, time='073550.00', latitude='4002.912442', latitudeHemi='N', longitude='11616.781588', longitudeHemi='E', fixQuality='1', numSatellites='12', horizontalDilutionOfPrecision='0.7', altitude='41.9', altitudeUnits='M', heightOfGeoid='-8.0', heightOfGeoidUnits='M', timeSinceLastDgpsUpdate='', timeSinceLastDgpsUpdateID=''}
   50: 04-08 15:35:53.367 I/NmeaActivity(11837): NmeaGGA{, time='073551.00', latitude='4002.912590', latitudeHemi='N', longitude='11616.781668', longitudeHemi='E', fixQuality='1', numSatellites='12', horizontalDilutionOfPrecision='0.6', altitude='42.0', altitudeUnits='M', heightOfGeoid='-8.0', heightOfGeoidUnits='M', timeSinceLastDgpsUpdate='', timeSinceLastDgpsUpdateID=''}
   68: 04-08 15:35:54.386 I/NmeaActivity(11837): NmeaGGA{, time='073552.00', latitude='4002.912644', latitudeHemi='N', longitude='11616.781673', longitudeHemi='E', fixQuality='1', numSatellites='12', horizontalDilutionOfPrecision='0.6', altitude='41.8', altitudeUnits='M', heightOfGeoid='-8.0', heightOfGeoidUnits='M', timeSinceLastDgpsUpdate='', timeSinceLastDgpsUpdateID=''}
   93: 04-08 15:35:55.400 I/NmeaActivity(11837): NmeaGGA{, time='073553.00', latitude='4002.912719', latitudeHemi='N', longitude='11616.781733', longitudeHemi='E', fixQuality='1', numSatellites='12', horizontalDilutionOfPrecision='0.6', altitude='41.7', altitudeUnits='M', heightOfGeoid='-8.0', heightOfGeoidUnits='M', timeSinceLastDgpsUpdate='', timeSinceLastDgpsUpdateID=''}
  118: 04-08 15:35:56.366 I/NmeaActivity(11837): NmeaGGA{, time='073554.00', latitude='4002.912787', latitudeHemi='N', longitude='11616.781671', longitudeHemi='E', fixQuality='1', numSatellites='12', horizontalDilutionOfPrecision='0.6', altitude='41.7', altitudeUnits='M', heightOfGeoid='-8.0', heightOfGeoidUnits='M', timeSinceLastDgpsUpdate='', timeSinceLastDgpsUpdateID=''}
  143: 04-08 15:35:57.392 I/NmeaActivity(11837): NmeaGGA{, time='073555.00', latitude='4002.912978', latitudeHemi='N', longitude='11616.781730', longitudeHemi='E', fixQuality='1', numSatellites='12', horizontalDilutionOfPrecision='0.6', altitude='41.3', altitudeUnits='M', heightOfGeoid='-8.0', heightOfGeoidUnits='M', timeSinceLastDgpsUpdate='', timeSinceLastDgpsUpdateID=''}
  168: 04-08 15:35:58.390 I/NmeaActivity(11837): NmeaGGA{, time='073556.00', latitude='4002.913100', latitudeHemi='N', longitude='11616.781945', longitudeHemi='E', fixQuality='1', numSatellites='12', horizontalDilutionOfPrecision='0.6', altitude='41.6', altitudeUnits='M', heightOfGeoid='-8.0', heightOfGeoidUnits='M', timeSinceLastDgpsUpdate='', timeSinceLastDgpsUpdateID=''}

GLL geographic location information: no logs were recalled

GSA GPS precision pointer and satellite use format: take 1-minute callback as the interval, and continuously callback 2 ~ 5 times every other minute

   14: 04-08 15:35:51.634 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='1', ids=',', pdop='', hdop='', vdop=''}
   29: 04-08 15:35:52.358 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='1.1', hdop='0.7', vdop='0.8'}
   30: 04-08 15:35:52.360 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='1.1', hdop='0.7', vdop='0.8'}

   47: 04-08 15:35:53.358 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='1.0', hdop='0.6', vdop='0.7'}
   48: 04-08 15:35:53.362 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='1.0', hdop='0.6', vdop='0.7'}

   65: 04-08 15:35:54.378 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='1.0', hdop='0.6', vdop='0.7'}
   66: 04-08 15:35:54.382 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='1.0', hdop='0.6', vdop='0.7'}

   90: 04-08 15:35:55.394 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='1.0', hdop='0.6', vdop='0.7'}
   91: 04-08 15:35:55.397 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='1.0', hdop='0.6', vdop='0.7'}

  115: 04-08 15:35:56.359 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='0.9', hdop='0.6', vdop='0.7'}
  116: 04-08 15:35:56.362 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='0.9', hdop='0.6', vdop='0.7'}
  140: 04-08 15:35:57.384 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='0.9', hdop='0.6', vdop='0.7'}
  141: 04-08 15:35:57.387 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='0.9', hdop='0.6', vdop='0.7'}
  165: 04-08 15:35:58.383 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='0.8', hdop='0.6', vdop='0.6'}
  166: 04-08 15:35:58.386 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='0.8', hdop='0.6', vdop='0.6'}
  190: 04-08 15:35:59.388 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='0.8', hdop='0.6', vdop='0.6'}
  191: 04-08 15:35:59.391 I/NmeaActivity(11837): NmeaGSA{selectionMode='A', mode='3', ids=',', pdop='0.8', hdop='0.6', vdop='0.6'}

GSV visible satellite information: 1 minute callback interval. Each callback starts and will be called back several times continuously

    3: 04-08 15:35:51.620 I/NmeaActivity(11837): NmeaGSV{numMessages='3', messageNum='1', svsInView='11', satellites=[Satellite{prnNumber='07', elevation='19', azimuth='191', snr='36'}, Satellite{prnNumber='01', elevation='71', azimuth='068', snr=''}, Satellite{prnNumber='03', elevation='21', azimuth='136', snr=''}, Satellite{prnNumber='08', elevation='22', azimuth='071', snr=''}]}
    4: 04-08 15:35:51.620 I/NmeaActivity(11837): NmeaGSV{numMessages='3', messageNum='2', svsInView='11', satellites=[Satellite{prnNumber='14', elevation='63', azimuth='313', snr=''}, Satellite{prnNumber='17', elevation='38', azimuth='278', snr=''}, Satellite{prnNumber='19', elevation='14', azimuth='265', snr=''}, Satellite{prnNumber='21', elevation='47', azimuth='050', snr=''}]}
    5: 04-08 15:35:51.620 I/NmeaActivity(11837): NmeaGSV{numMessages='3', messageNum='3', svsInView='11', satellites=[Satellite{prnNumber='22', elevation='32', azimuth='108', snr=''}, Satellite{prnNumber='28', elevation='56', azimuth='314', snr=''}, Satellite{prnNumber='30', elevation='40', azimuth='230', snr=''}]}
   10: 04-08 15:35:51.621 I/NmeaActivity(11837): NmeaGSV{numMessages='2', messageNum='1', svsInView='05', satellites=[Satellite{prnNumber='74', elevation='34', azimuth='164', snr=''}, Satellite{prnNumber='86', elevation='33', azimuth='247', snr=''}, Satellite{prnNumber='76', elevation='26', azimuth='326', snr=''}, Satellite{prnNumber='84', elevation='25', azimuth='037', snr=''}]}
   11: 04-08 15:35:51.622 I/NmeaActivity(11837): NmeaGSV{numMessages='2', messageNum='2', svsInView='05', satellites=[Satellite{prnNumber='85', elevation='68', azimuth='320', snr=''}]}
   12: 04-08 15:35:51.623 I/NmeaActivity(11837): NmeaGSV{numMessages='2', messageNum='1', svsInView='05', satellites=[Satellite{prnNumber='13', elevation='42', azimuth='226', snr='33'}, Satellite{prnNumber='15', elevation='80', azimuth='040', snr=''}, Satellite{prnNumber='21', elevation='30', azimuth='313', snr=''}, Satellite{prnNumber='27', elevation='82', azimuth='261', snr=''}]}
   13: 04-08 15:35:51.625 I/NmeaActivity(11837): NmeaGSV{numMessages='2', messageNum='2', svsInView='05', satellites=[Satellite{prnNumber='30', elevation='35', azimuth='140', snr=''}]}
   14: 04-08 15:35:51.627 I/NmeaActivity(11837): NmeaGSV{numMessages='5', messageNum='1', svsInView='20', satellites=[Satellite{prnNumber='01', elevation='35', azimuth='139', snr=''}, Satellite{prnNumber='02', elevation='31', azimuth='222', snr=''}, Satellite{prnNumber='03', elevation='42', azimuth='188', snr=''}, Satellite{prnNumber='04', elevation='26', azimuth='122', snr=''}]}
   15: 04-08 15:35:51.629 I/NmeaActivity(11837): NmeaGSV{numMessages='5', messageNum='2', svsInView='20', satellites=[Satellite{prnNumber='05', elevation='14', azimuth='246', snr=''}, Satellite{prnNumber='07', elevation='73', azimuth='112', snr=''}, Satellite{prnNumber='08', elevation='54', azimuth='184', snr=''}, Satellite{prnNumber='09', elevation='00', azimuth='000', snr=''}]}
   16: 04-08 15:35:51.630 I/NmeaActivity(11837): NmeaGSV{numMessages='5', messageNum='3', svsInView='20', satellites=[Satellite{prnNumber='10', elevation='78', azimuth='312', snr=''}, Satellite{prnNumber='11', elevation='73', azimuth='352', snr=''}, Satellite{prnNumber='12', elevation='29', azimuth='053', snr=''}, Satellite{prnNumber='13', elevation='32', azimuth='198', snr=''}]}
   17: 04-08 15:35:51.632 I/NmeaActivity(11837): NmeaGSV{numMessages='5', messageNum='4', svsInView='20', satellites=[Satellite{prnNumber='21', elevation='11', azimuth='090', snr=''}, Satellite{prnNumber='22', elevation='04', azimuth='042', snr=''}, Satellite{prnNumber='23', elevation='51', azimuth='286', snr=''}, Satellite{prnNumber='24', elevation='04', azimuth='158', snr=''}]}
   18: 04-08 15:35:51.633 I/NmeaActivity(11837): NmeaGSV{numMessages='5', messageNum='5', svsInView='20', satellites=[Satellite{prnNumber='25', elevation='49', azimuth='195', snr=''}, Satellite{prnNumber='28', elevation='12', azimuth='248', snr=''}, Satellite{prnNumber='34', elevation='56', azimuth='043', snr=''}, Satellite{prnNumber='37', elevation='09', azimuth='320', snr=''}]}


   22: 04-08 15:35:52.341 I/NmeaActivity(11837): NmeaGSV{numMessages='3', messageNum='1', svsInView='11', satellites=[Satellite{prnNumber='01', elevation='71', azimuth='068', snr='25'}, Satellite{prnNumber='03', elevation='21', azimuth='136', snr='24'}, Satellite{prnNumber='07', elevation='19', azimuth='191', snr='37'}, Satellite{prnNumber='14', elevation='63', azimuth='313', snr='22'}]}
   23: 04-08 15:35:52.342 I/NmeaActivity(11837): NmeaGSV{numMessages='3', messageNum='2', svsInView='11', satellites=[Satellite{prnNumber='17', elevation='38', azimuth='278', snr='32'}, Satellite{prnNumber='19', elevation='14', azimuth='265', snr='24'}, Satellite{prnNumber='21', elevation='47', azimuth='050', snr='29'}, Satellite{prnNumber='22', elevation='32', azimuth='108', snr='28'}]}
   24: 04-08 15:35:52.343 I/NmeaActivity(11837): NmeaGSV{numMessages='3', messageNum='3', svsInView='11', satellites=[Satellite{prnNumber='28', elevation='56', azimuth='314', snr='21'}, Satellite{prnNumber='30', elevation='40', azimuth='230', snr='27'}, Satellite{prnNumber='08', elevation='22', azimuth='071', snr=''}]}


   25: 04-08 15:35:52.346 I/NmeaActivity(11837): NmeaGSV{numMessages='2', messageNum='1', svsInView='05', satellites=[Satellite{prnNumber='74', elevation='34', azimuth='164', snr='26'}, Satellite{prnNumber='85', elevation='68', azimuth='320', snr='21'}, Satellite{prnNumber='86', elevation='33', azimuth='247', snr=''}, Satellite{prnNumber='76', elevation='26', azimuth='326', snr=''}]}
   26: 04-08 15:35:52.347 I/NmeaActivity(11837): NmeaGSV{numMessages='2', messageNum='2', svsInView='05', satellites=[Satellite{prnNumber='84', elevation='25', azimuth='037', snr=''}]}
   27: 04-08 15:35:52.349 I/NmeaActivity(11837): NmeaGSV{numMessages='2', messageNum='1', svsInView='05', satellites=[Satellite{prnNumber='13', elevation='42', azimuth='226', snr='35'}, Satellite{prnNumber='21', elevation='30', azimuth='313', snr='26'}, Satellite{prnNumber='30', elevation='35', azimuth='140', snr='21'}, Satellite{prnNumber='15', elevation='80', azimuth='040', snr=''}]}
   28: 04-08 15:35:52.350 I/NmeaActivity(11837): NmeaGSV{numMessages='2', messageNum='2', svsInView='05', satellites=[Satellite{prnNumber='27', elevation='82', azimuth='261', snr=''}]}


   29: 04-08 15:35:52.354 I/NmeaActivity(11837): NmeaGSV{numMessages='5', messageNum='1', svsInView='20', satellites=[Satellite{prnNumber='34', elevation='56', azimuth='043', snr='23'}, Satellite{prnNumber='25', elevation='49', azimuth='195', snr='31'}, Satellite{prnNumber='23', elevation='51', azimuth='286', snr='30'}, Satellite{prnNumber='13', elevation='32', azimuth='198', snr='25'}]}
   30: 04-08 15:35:52.354 I/NmeaActivity(11837): NmeaGSV{numMessages='5', messageNum='2', svsInView='20', satellites=[Satellite{prnNumber='08', elevation='54', azimuth='184', snr='22'}, Satellite{prnNumber='07', elevation='73', azimuth='112', snr='21'}, Satellite{prnNumber='03', elevation='42', azimuth='188', snr='28'}, Satellite{prnNumber='01', elevation='35', azimuth='139', snr=''}]}
   31: 04-08 15:35:52.355 I/NmeaActivity(11837): NmeaGSV{numMessages='5', messageNum='3', svsInView='20', satellites=[Satellite{prnNumber='02', elevation='31', azimuth='222', snr=''}, Satellite{prnNumber='04', elevation='26', azimuth='122', snr=''}, Satellite{prnNumber='05', elevation='14', azimuth='246', snr=''}, Satellite{prnNumber='09', elevation='00', azimuth='000', snr=''}]}
   32: 04-08 15:35:52.355 I/NmeaActivity(11837): NmeaGSV{numMessages='5', messageNum='4', svsInView='20', satellites=[Satellite{prnNumber='10', elevation='78', azimuth='312', snr=''}, Satellite{prnNumber='11', elevation='73', azimuth='352', snr=''}, Satellite{prnNumber='12', elevation='29', azimuth='053', snr=''}, Satellite{prnNumber='21', elevation='11', azimuth='090', snr=''}]}
   33: 04-08 15:35:52.356 I/NmeaActivity(11837): NmeaGSV{numMessages='5', messageNum='5', svsInView='20', satellites=[Satellite{prnNumber='22', elevation='04', azimuth='042', snr=''}, Satellite{prnNumber='24', elevation='04', azimuth='158', snr=''}, Satellite{prnNumber='28', elevation='12', azimuth='248', snr=''}, Satellite{prnNumber='37', elevation='09', azimuth='320', snr=''}]}

The minimum amount of GPS information recommended by RMC: once every 1s

 20: 04-08 15:35:51.636 I/NmeaActivity(11837): NmeaRMC{time='', fixStatus='V', latitude='', latitudeHemi='', longitude='', longitudeHemi='', speed='', bearing='', utcDate='', magneticVariation='', magneticVariationDir='', mode='N'}
   36: 04-08 15:35:52.363 I/NmeaActivity(11837): NmeaRMC{time='073550.00', fixStatus='A', latitude='4002.912442', latitudeHemi='N', longitude='11616.781588', longitudeHemi='E', speed='0.0', bearing='', utcDate='080421', magneticVariation='5.8', magneticVariationDir='W', mode='A'}
   54: 04-08 15:35:53.365 I/NmeaActivity(11837): NmeaRMC{time='073551.00', fixStatus='A', latitude='4002.912590', latitudeHemi='N', longitude='11616.781668', longitudeHemi='E', speed='0.0', bearing='', utcDate='080421', magneticVariation='5.8', magneticVariationDir='W', mode='A'}
   72: 04-08 15:35:54.385 I/NmeaActivity(11837): NmeaRMC{time='073552.00', fixStatus='A', latitude='4002.912644', latitudeHemi='N', longitude='11616.781673', longitudeHemi='E', speed='0.0', bearing='', utcDate='080421', magneticVariation='5.8', magneticVariationDir='W', mode='A'}
   97: 04-08 15:35:55.399 I/NmeaActivity(11837): NmeaRMC{time='073553.00', fixStatus='A', latitude='4002.912719', latitudeHemi='N', longitude='11616.781733', longitudeHemi='E', speed='0.0', bearing='', utcDate='080421', magneticVariation='5.8', magneticVariationDir='W', mode='A'}
  122: 04-08 15:35:56.364 I/NmeaActivity(11837): NmeaRMC{time='073554.00', fixStatus='A', latitude='4002.912787', latitudeHemi='N', longitude='11616.781671', longitudeHemi='E', speed='0.0', bearing='', utcDate='080421', magneticVariation='5.8', magneticVariationDir='W', mode='A'}
  147: 04-08 15:35:57.390 I/NmeaActivity(11837): NmeaRMC{time='073555.00', fixStatus='A', latitude='4002.912978', latitudeHemi='N', longitude='11616.781730', longitudeHemi='E', speed='0.0', bearing='', utcDate='080421', magneticVariation='5.8', magneticVariationDir='W', mode='A'}
  172: 04-08 15:35:58.388 I/NmeaActivity(11837): NmeaRMC{time='073556.00', fixStatus='A', latitude='4002.913100', latitudeHemi='N', longitude='11616.781945', longitudeHemi='E', speed='0.0', bearing='', utcDate='080421', magneticVariation='5.8', magneticVariationDir='W', mode='A'}
  197: 04-08 15:35:59.394 I/NmeaActivity(11837): NmeaRMC{time='073557.00', fixStatus='A', latitude='4002.913257', latitudeHemi='N', longitude='11616.782040', longitudeHemi='E', speed='0.0', bearing='', utcDate='080421', magneticVariation='5.8', magneticVariationDir='W', mode='A'}
  224: 04-08 15:36:00.380 I/NmeaActivity(11837): NmeaRMC{time='073558.00', fixStatus='A', latitude='4002.913434', latitudeHemi='N', longitude='11616.782170', longitudeHemi='E', speed='0.0', bearing='', utcDate='080421', magneticVariation='5.8', magneticVariationDir='W', mode='A'}
  251: 04-08 15:36:01.388 I/NmeaActivity(11837): NmeaRMC{time='073559.00', fixStatus='A', latitude='4002.913586', latitudeHemi='N', longitude='11616.782375', longitudeHemi='E', speed='0.0', bearing='', utcDate='080421', magneticVariation='5.8', magneticVariationDir='W', mode='A'}
  278: 04-08 15:36:02.393 I/NmeaActivity(11837): NmeaRMC{time='073600.00', fixStatus='A', latitude='4002.913637', latitudeHemi='N', longitude='11616.782442', longitudeHemi='E', speed='0.0', bearing='', utcDate='080421', magneticVariation='5.8', magneticVariationDir='W', mode='A'}
  305: 04-08 15:36:03.382 I/NmeaActivity(11837): NmeaRMC{time='073601.00', fixStatus='A', latitude='4002.913627', latitudeHemi='N', longitude='11616.782431', longitudeHemi='E', speed='0.0', bearing='', utcDate='080421', magneticVariation='5.8', magneticVariationDir='W', mode='A'}

VTG not callback

Added by ac1982 on Tue, 08 Mar 2022 08:29:22 +0200

Programming VIP

Android Nmea information sorting

NEAM-0183 message analysis

GPGGA (location information)

GPGSA (current satellite information)

Gpgsv (visible satellite information)

GPRMC (recommended location information data format)

GPVTG (ground speed information)

GPGLL (geographic location information)

Android get NMEA data interface

Android callback frequency statistics of the above data formats

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