Furuno SC-70 Manual Del Operador página 106

APÉNDICE 7 INTERFAZ DIGITAL (IEC 61162-1, 4ª edición [2010-11])
• GRS: Residual de escala GNSS
$**GRS,hhmmss.ss,x,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,h,h*hh<CR><LF>
1 2
1. UTC time of GGA/GNS fix
2. Mode: 0=Residuals were used to calculate the position given in the matching GGA or GNS
sentence; 1=Residuals were recomputed after the GGA or GNS position was computed
3. Range residuals in meters for satellites used in the navigation solution (-99 to 99, null) See notes
1&2.
4 to 14. Same as #3.
15. GNSS System ID (1 to F; 1=GP, 2=GL, 3=GA, 4 to F=RESERVED)
16. Signal ID (0 to F)
Notes:
1) If the range residual exceeds +99.9 meters, then the decimal part is dropped, resulting in an
integer (-13.7 becomes -13). The maximum value for this field is +99.
2) The sense or sign of the range residual is determined by the order of parameters used in the
calculation.
The expected order is as follows: range residual = calculated range - measured range.
3) When multiple GRS sentences are being sent then their order of transmission must match the
order of corresponding GSA sentences.
Listeners shall keep track of pairs of GSA and GRS sentences and discard data if pairs are
incomplete.
4) Signal ID indentifies the actual ranging signal according to the Table below.
5) System ID according to Table below.
GRS Table
System System ID
GPS 1 (GP)
GLONASS 2 (GL)
GALILEO 3 (GA)
Reserved 4 to F
AP-18
3 to 14
Satellite ID
1 to 99
1 to 32 is reserved for GPS
33 to 64 is reserved for SBAS
65 to 99 is undefined
1 to 99
1 to 32 is undefined
33 to 64 is reserved for SBAS
65 to 99 is reserved for
GLONASS
1 to 99
1 to 36 is reserved for
Galileo SVs
37 to 64 is reserved for
Galileo SBAS
65 to 99 is undefined
15 16
Signal ID Signal Channel
0 All Signals
1 L1 C/A
2 L1 P(Y)
3 L1 M
4 L2 P(Y)
5 L2C-M
6 L2C-L
7 L5-I
8 L5-Q
9 to F Reserved
0 All Signals
1 G1 C/A
2 G1 P
3 G2 C/A
4 GLONASS (M) G2 P
5 to F
Reserved
0 All Signals
1 E5a
2 E5b
3 E5 a+b
4 E6-A
5 E6-BC
6 L1-A
7 L1-BC
8 to F Reserved