UNICORECOMM Unicore - GPSEPHEM GPS Ephemeris

Command and Log Reference
60
information within current subframe
4
Reserved
…
31
Table 6-25: P1 Flags Range Values
state
Description
00
0 minute
01
30 minutes
10
45 minutes
11
60 minutes
6.2.6 GPSEPHEM GPS Ephemeris
This log contains GPS ephemeris.
Message ID: 7
Recommend Input:
GPSEPHEMA ONCHANGED
LOG output:
#GPSEPHEMA,COM1,0,90.0,FINE,1971,298163.800,206351627,206351636,18;
32,298140.0,0,41,41,1971,1971,302400.0,2.655962336e+07,4.215175579e-09,
-2.247467812e+00,1.4623102034e-03,-2.5747464564e+00,4.114583135e-06,
1.135468483e-05,1.60125000e+02,7.69062500e+01,-1.098960638e-07,
2.235174179e-08,9.5812048008e-01,2.842975564e-10,-2.941357651e+00,
-7.82889753e-09,41,302400.0,4.656612873e-10,-5.1446445e-04,
-4.3200998e-12,0.0000000e+00,TRUE,1.458641622e-04,4.00000000e+00*d86f925e
Table 6-26: GPS Ephemeris Message
ID
Field
Description
Format
Binary
Bytes
Binary
Offset
1
GPSEPHEM
header
Log header
H
0
2
PRN
GPS Satellite PRN umber（1~32）
Ulong
4
H
3
tow
Time stamp of subframe 1, seconds
Double
8
H+4
4
health
Health status: a 6-bit health code defined
in ICD-GPS-200
Ulong
4
H+12
5
IODE1
Issue of data 1, ephemeris
Ulong
4
H+16
6
IODE2
Issue of data 2, ephemeris
Ulong
4
H+20
7
Week
GPS toe week number (derived from Z
count week)
Ulong
4
H+24
8
Z Week
Z count week number, which from
Ulong
4
H+28