NEMA-0183 (GPRS Mc gpgga)

The NMEA data is as follows:
$ Gpgga, 121252.000, 3937.3032, N, 11611.6046, E, 2.0, 45.9, 5.7, M,-0000, M, * 77
$ Gprs mc, 121252.000, A, 3958.3032, N, 11629.6046, E, 15.15, 359.95, 070306, A * 54
$ Gpvtg, 359.95, T, M, 15.15, N, 28.0, K, A * 04
$ Gpgga, 121253.000, 3937.3090, N, 11611.6057, E, 1.2, 44.6, 5.7, M,-0000, M, * 72
$ Gpgsa, A, 3, 14, 15, 05, 2.1, 18, 26, 1.2, 1.7 * 3D
$ Gpgsv, 84,067, 67,067, 49,312, 47,231, 30*70
$ Gpgsv, 32,199, 25,272, 21,140, 14,070, 20 * 7E
$ Gpgsv, 07,074, * 7d

Note: The nmea0183 format starts with "$". The main statements include gpgga, gpvtg, and gpmc.

1. gps dop and active satellites (GSA) current satellite information

$ Gpgsa ,,,,,,,,,,,,,,,

Mode: M = manual, a = automatic.
Positioning type 1 = undetermined, 2 = 2D, 3 = 3D.
PRN number: Number of the satellites used in the sky from Table 01 to Table 32. Up to 12 satellites can be received.
Pdop Position Accuracy Factor (0.5 ~ 99.9)
Hdop horizontal precision factor (0.5 ~ 99.9)
Vdop vertical precision factor (0.5 ~ 99.9)
Checksum. (check bit ).

2. GPS satellites in view (GSV) Visible satellite information
$ Gpgsv ,,,,,,,,?,,,,

Total number of GSV statements
Number of GSV in this sentence
The total number of visible satellites, ranging from 00 to 12.
Satellite Number, ranging from 01 to 32.
Satellite elevation, ranging from 00 to 90 degrees.
Satellite azimuth, ranging from 359 to degrees. The actual value.
Signal noise ratio (C/no), 00 to 99 dB; no table does not receive the signal.
Checksum. (check bit ).

Number, and items of a satellite repeat. Each row has a maximum of four satellites. Other satellite information will appear in the next row. if not used, these fields will be blank.

3. Global Positioning System Fix Data (GGA) GPS Positioning Information

$ Gpgga, M, * hh

UTC time, hhmmss (hour/minute/second) Format
Latitude ddmm. Mmmm (degree) format (the preceding 0 will also be transmitted)
Latitude hemisphere N (northern hemisphere) or S (Southern Hemisphere)
Longitude dddmm. Mmmm (degree) format (the preceding 0 will also be transmitted)
Longitude hemisphere E (eastern longitude) or W (Western longitude)
GPS status: 0 = undetermined, 1 = non-differential positioning, 2 = differential positioning, 6 = being estimated
Number of satellites using the resolution position (00 ~ 12) (the previous 0 will also be transmitted)
Hdop horizontal precision factor (0.5 ~ 99.9)
Altitude (-9999.9 ~ 99999.9)
Height of the earth's elliptical sphere relative to the Earth's leveling Surface
Difference Time (the number of seconds since the last time the difference signal was received. If it is not a difference, it will be blank)
ID No. of differential substation: 0000 ~ 1023 (the previous 0 will also be transmitted, if not differential positioning will be blank)

4. recommended minimum specific GPS/transit data (RMC) recommended positioning information

$ Gprs mc, * hh

UTC time, hhmmss (hour/minute/second) Format
Location status, A = valid, V = invalid
Latitude ddmm. Mmmm (degree) format (the preceding 0 will also be transmitted)
Latitude hemisphere N (northern hemisphere) or S (Southern Hemisphere)
Longitude dddmm. Mmmm (degree) format (the preceding 0 will also be transmitted)
Longitude hemisphere E (eastern longitude) or W (Western longitude)
Ground speed (000.0 ~ Section 999.9, the previous 0 will also be transmitted)
Ground heading (000.0 ~ 359.9 degrees. Based on the reference of zhenbei, the preceding 0 will also be transmitted)
UTC date, ddmmyy (day-month-year) Format
Magnetic slip angle (000.0 ~ 180.0 degrees, the previous 0 will also be transmitted)
Direction of the magnetic angle, E (East) or W (West)
Mode indication (output only in nmea0183 3.00, A = autonomous location, D = difference, E = estimation, n = data is invalid)

5. Track made good and ground speed (Vtg) ground speed information
$ Gpvtg, T, M, N, K, * hh
Ground heading based on zhenbei (000 ~ 359 degrees, the previous 0 will also be transmitted)
Ground heading (000 ~ 359 degrees, the previous 0 will also be transmitted)
Ground speed (000.0 ~ Section 999.9, the previous 0 will also be transmitted)
Ground speed (0000.0 ~ 1851.8 km/hour, the front 0 will also be transmitted)
Mode indication (output only in nmea0183 3.00, A = autonomous location, D = difference, E = estimation, n = data is invalid)