// License: GPL. For details, see LICENSE file. package org.openstreetmap.josm.io.nmea; /** * An NMEA sentence consists of a start delimiter, followed by a comma-separated sequence of fields, * followed by the character * (ASCII 42), the checksum and an end-of-line marker. * The start delimiter is normally $ (ASCII 36).

* Most GPS sensors emit only RMC, GGA, GSA, GSV, GLL, VTG, and (rarely) ZDA. * Newer ones conforming to NMEA 3.x may emit GBS as well. * Other NMEA sentences are usually only emitted by high-end maritime navigation systems.

* See NMEA Encoding Conventions * @since 12421 */ public enum Sentence { /** * GBS - GPS Satellite Fault Detection * 

     *            1      2   3   4   5   6   7   8   9
     *            |      |   |   |   |   |   |   |   |
     * $--GBS,hhmmss.ss,x.x,x.x,x.x,x.x,x.x,x.x,x.x*hh
     *
* Field Number:
    *
  1. UTC time of the GGA or GNS fix associated with this sentence
    2. *
  2. Expected error in latitude (meters)
    3. *
  3. Expected error in longitude (meters)
    4. *
  4. Expected error in altitude (meters)
    5. *
  5. PRN of most likely failed satellite
    6. *
  6. Probability of missed detection for most likely failed satellite
    7. *
  7. Estimate of bias in meters on most likely failed satellite
    8. *
  8. Standard deviation of bias estimate
    9. *
  9. Checksum
    10. *
* See GBS */ GBS, /** * GGA - Global Positioning System Fix Data * 
     *                                                      11
     *        1         2       3 4        5 6 7  8   9  10 |  12 13  14   15
     *        |         |       | |        | | |  |   |   | |   | |   |    |
     * $--GGA,hhmmss.ss,llll.ll,a,yyyyy.yy,a,x,xx,x.x,x.x,M,x.x,M,x.x,xxxx*hh
     *
* Field Number:
    *
  1. Universal Time Coordinated (UTC)
    2. *
  2. Latitude
    3. *
  3. N or S (North or South)
    4. *
  4. Longitude
    5. *
  5. E or W (East or West)
    6. *
  6. GPS Quality Indicator,
    7. *
  7. Number of satellites in view, 00 - 12
    8. *
  8. Horizontal Dilution of precision (meters)
    9. *
  9. Antenna Altitude above/below mean-sea-level (geoid) (in meters)
    10. *
  10. Units of antenna altitude, meters
    11. *
  11. Geoidal separation, the difference between the WGS-84 earth ellipsoid and mean-sea-level (geoid), * "-" means mean-sea-level below ellipsoid
    12. *
  12. Units of geoidal separation, meters
    13. *
  13. Age of differential GPS data, time in seconds since last SC104 type 1 or 9 update, null field when DGPS is not used
    14. *
  14. Differential reference station ID, 0000-1023
    15. *
  15. Checksum
    16. *
* See GGA */ GGA, /** * GSA - GPS DOP and active satellites * 
     *        1 2 3                        14 15  16  17  18
     *        | | |                         |  |   |   |   |
     * $--GSA,a,a,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x.x,x.x,x.x*hh
     *
* Field Number:
    *
  1. Selection mode: M=Manual, forced to operate in 2D or 3D, A=Automatic, 3D/2D
    2. *
  2. Mode (1 = no fix, 2 = 2D fix, 3 = 3D fix)
    3. *
  3. ID of 1st satellite used for fix
    4. *
  4. ID of 2nd satellite used for fix
    5. *
  5. ID of 3rd satellite used for fix
    6. *
  6. ID of 4th satellite used for fix
    7. *
  7. ID of 5th satellite used for fix
    8. *
  8. ID of 6th satellite used for fix
    9. *
  9. ID of 7th satellite used for fix
    10. *
  10. ID of 8th satellite used for fix
    11. *
  11. ID of 9th satellite used for fix
    12. *
  12. ID of 10th satellite used for fix
    13. *
  13. ID of 11th satellite used for fix
    14. *
  14. ID of 12th satellite used for fix
    15. *
  15. PDOP
    16. *
  16. HDOP
    17. *
  17. VDOP
    18. *
  18. Checksum
    19. *
* See GSA */ GSA, /** * GSV - Satellites in view * 
     *        1 2 3 4 5 6 7     n
     *        | | | | | | |     |
     * $--GSV,x,x,x,x,x,x,x,...*hh
     *
* Field Number:
    *
  1. total number of GSV messages to be transmitted in this group
    2. *
  2. 1-origin number of this GSV message within current group
    3. *
  3. total number of satellites in view (leading zeros sent)
    4. *
  4. satellite PRN number (leading zeros sent)
    5. *
  5. elevation in degrees (00-90) (leading zeros sent)
    6. *
  6. azimuth in degrees to true north (000-359) (leading zeros sent)
    7. *
  7. SNR in dB (00-99) (leading zeros sent) more satellite info quadruples like 4-7 n) checksum
    8. *
* See GSV */ GSV, /** * GLL - Geographic Position - Latitude/Longitude * 
     *        1       2 3        4 5         6 7   8
     *        |       | |        | |         | |   |
     * $--GLL,llll.ll,a,yyyyy.yy,a,hhmmss.ss,a,m,*hh
     *
* Field Number:
    *
  1. Latitude
    2. *
  2. N or S (North or South)
    3. *
  3. Longitude
    4. *
  4. E or W (East or West)
    5. *
  5. Universal Time Coordinated (UTC)
    6. *
  6. Status A - Data Valid, V - Data Invalid
    7. *
  7. FAA mode indicator (NMEA 2.3 and later)
    8. *
  8. Checksum
    9. *
* See GLL */ GLL, /** * GST - GPS Pseudorange Noise Statistics * 
     *              1    2 3 4 5 6 7 8   9
     *              |    | | | | | | |   |
     * $ --GST,hhmmss.ss,x,x,x,x,x,x,x*hh
     *
* Field Number:
    *
  1. UTC time of associated GGA fix
    2. *
  2. Total RMS standard deviation of ranges inputs to the navigation solution
    3. *
  3. Standard deviation (meters) of semi-major axis of error ellipse
    4. *
  4. Standard deviation (meters) of semi-minor axis of error ellipse
    5. *
  5. Orientation of semi-major axis of error ellipse (true north degrees)
    6. *
  6. Standard deviation (meters) of latitude error
    7. *
  7. Standard deviation (meters) of longitude error
    8. *
  8. Standard deviation (meters) of altitude error
    9. *
  9. Checksum
    10. *
* See GST */ GST, /** * RMC - Recommended Minimum Navigation Information * 
     *                                                          12
     *        1         2 3       4 5        6  7   8   9    10 11|  13
     *        |         | |       | |        |  |   |   |    |  | |   |
     * $--RMC,hhmmss.ss,A,llll.ll,a,yyyyy.yy,a,x.x,x.x,xxxx,x.x,a,m,*hh
     *
* Field Number:
    *
  1. UTC Time
    2. *
  2. Status, V=Navigation receiver warning A=Valid
    3. *
  3. Latitude
    4. *
  4. N or S
    5. *
  5. Longitude
    6. *
  6. E or W
    7. *
  7. Speed over ground, knots
    8. *
  8. Track made good, degrees true
    9. *
  9. Date, ddmmyy
    10. *
  10. Magnetic Variation, degrees
    11. *
  11. E or W
    12. *
  12. FAA mode indicator (NMEA 2.3 and later)
    13. *
  13. Checksum
    14. *
* See RMC */ RMC, /** * VTG - Track made good and Ground speed * 
     *         1  2  3  4  5  6  7  8 9   10
     *         |  |  |  |  |  |  |  | |   |
     * $--VTG,x.x,T,x.x,M,x.x,N,x.x,K,m,*hh
     *
* Field Number:
    *
  1. Track Degrees
    2. *
  2. T = True
    3. *
  3. Track Degrees
    4. *
  4. M = Magnetic
    5. *
  5. Speed Knots
    6. *
  6. N = Knots
    7. *
  7. Speed Kilometers Per Hour
    8. *
  8. K = Kilometers Per Hour
    9. *
  9. FAA mode indicator (NMEA 2.3 and later)
    10. *
  10. Checksum
    11. *
* See VTG */ VTG, /** * ZDA - Time & Date - UTC, day, month, year and local time zone * 
     *        1         2  3  4    5  6  7
     *        |         |  |  |    |  |  |
     * $--ZDA,hhmmss.ss,xx,xx,xxxx,xx,xx*hh
     *
* Field Number:
    *
  1. UTC time (hours, minutes, seconds, may have fractional subsecond)
    2. *
  2. Day, 01 to 31
    3. *
  3. Month, 01 to 12
    4. *
  4. Year (4 digits)
    5. *
  5. Local zone description, 00 to +- 13 hours
    6. *
  6. Local zone minutes description, apply same sign as local hours
    7. *
  7. Checksum
    8. *
* See ZDA */ ZDA }