Glonass Ephemeris Flags Coding; Integer; Integer Bytes; Integer Weeks - Novatel MiLLennium OM-20000040 User Manual

H NovAtel Format Logs
Example:
$GEPA,991,496487.00,991,495913.00,10787,4,12,83,0,-2.102581933593754E+007
-1.216645166015627E+007,7.7982763671875110E+006,-9.655075073242192E+002
-5.014476776123048E+002,-3.387468338012698E+003,-1.862645149230957E-006
9.3132257461547851E-007,-9.313225746154785E-007,-3.913920372724533E-004
7.2759576141834267E-012,73800,0,13,*49,[CR][LF]
GEPB
Format:
Message ID = 77
Field # Data
1 Sync
Checksum
Message Id
Message byte count
2 GPS week of log output
3 GPS time of log output
4 Reference week of ephemeris (in GPS time)
5 Reference time of ephemeris (in GPS time)
6 GLONASS time - GPS time
7 Slot number
8 Frequency
9 Issue 15 min. reference
10 Health
11 X position (PZ90)
12 Y position (PZ90)
13 Z position (PZ90)
14 X velocity (PZ90)
15 Y velocity (PZ90)
16 Z velocity (PZ90)
17 X lunisolar acceleration (PZ90)
18 Y lunisolar acceleration (PZ90)
19 Z lunisolar acceleration (PZ90)
20 Tau
21 Gamma
22 Time of frame start
23 Age of data
24 Flags (See Table H.1 below)
N 7 N 6 N 5 N 4
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
94
Message byte count = 156
Table H.1 GLONASS Ephemeris Flags Coding
<-
N 3 N 2 N 1 N 0
<-
Bit
lsb
= 0
1
2 P2 FLAG - ODDNESS OR EVENNESS OF iISSUE (tb) VALUE
3 P3 FLAG - NUMBER OF SATELLITES WITH ALMANAC INFORMATION
4
: RESERVED
31
Bytes Format
3 char
1 char
4

integer

4 integer
4 integer
8 double
4 integer
8 double
4 integer
4 integer
4 integer
4 integer
4 integer
8 double
8 double
8 double
8 double
8 double
8 double
8 double
8 double
8 double
8 double
8 double
4 long
4 integer
4 integer
Nibble Number
Description
P1 FLAG - TIME INTERVAL BETWEEN ADJACENT iISSUE (tb) VALUES
WITHIN CURRENT SUBFRAME
GPS/GLONASS Receiver User Manual Rev 1
Units Offset
0
3
4
bytes 8
weeks 12
seconds 16
weeks 24
seconds 28
seconds 36
ordinal 40
ordinal 44
900s 48
- 52
meters 56
meters 64
meters 72
meters/s 80
meters/s 88
meters/s 96
meters/s/s 104
meters/s/s 112
meters/s/s 120
seconds 128
seconds/second 136
seconds 144
days 148
- 152
Range Values
See Table below 00000001
00000002
0 = even, 1 = odd 00000004
0 = four, 1 = five 00000008
Hex Value