JRC JLR-20, Инструкция по эксплуатации, Страница: 106 / 118

Appendix 2-6
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GSV (GPS Satellites in View)
Version 2.1, 2.3 only
$GPGSV, x,x,xx,xx,xx,xxx,xx,xx,xx,xxx,xx,xx,xx,xxx,xx,xx,xx,xxx,xx*hh<CR><LF>
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
1: Total number of GSV messages (1 - 3) (Version 2.1)
2: GSV message number (1 - 3) (Version 2.1)
1: Total number of GSV messages (1 - 4) (Version 2.3)
2: GSV message number (1 - 4) (Version 2.3)
3: Satellites in view
4: 1st satellite PRN number (01 - 32) (2 digit fixed length)
SBAS satellites 120 to 138 are represented by 33 to 51. (Version 2.3)
33 to 64 are reserved for SBAS satellite use. (Version 2.3)
5: 1st satellite elevation angle (00 - 32) (2 digit fixed length)
6: 1st satellite bearing angle (00 - 90 deg) (3 digit fixed length)
7: 1st satellite SNR signal strength C/No (00 - 99dB) (2 digit fixed length)
8 – 11: 2nd satellite information (same as 4 - 7)
12 – 15: 3rd satellite information (same as 4 - 7)
16 – 19: 4th satellite information (same as 4 - 7)
20: Checksum
Note. Each GSV sentence includes 4 satellites, so the number of GSV sentences varys
based on the number of satellites detected.
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GNS (GNSS Fixed Data)
Version 2.3 only
$GPGNS, hhmmss.ss,ddmm.mmmm,a,dddmm.mmmm,a,x,xx,xx,uxxxx,uxxx,xx,xxxx*hh<CR><LF>
1 2 3 4 5 6 7 8 9 10 11 12 13
1: UTC time (hours, minutes, seconds)
Measured UTC [1/100 sec]
2, 3: Latitude (deg, min), N / S
4, 5: Longitude (deg, min), E / W
6: MODE indicator N = No position measurement, A = GPS positioning, D =
DGPS positioning
S = Simulation mode
7: Number of satellites used for positioning
8: HDOP (0 - 20)
9: Antenna altitude above sea level (m), u: sign (+,-)
10: Geoid height (m), u: sign (+,-)
11: DGPS data seconds expired (NULL if not performing DGPS positioning)
12: DGPS reference station (NULL if not performing DGPS positioning)
13: Checksum
Note 1. When not performing position fixing, outputs last measured position data, date,
and time.
When power is turned on, or master reset is performed, the initial time, date, and
position settings are NULL.