Rawephem Raw Ephemeris - Novatel EuroPak-15ab User Manual

Chapter 6
6.3.6

RAWEPHEM Raw Ephemeris

This log contains the raw binary information for subframes one, two and three from a satellite with the parity
information removed. Each subframe is 240 bits long (10 words - 24 bits each) and the log contains a total 720
bits (90 bytes) of information (240 bits x 3 subframes). This information is preceded by the PRN number of the
satellite from which it originated. This message is not generated unless all 10 words from all 3 frames have
passed parity.
Ephemeris data whose Time Of Ephemeris (TOE) is older than six hours is not shown.
Log Type: Asynch
Field Field Name
1 header
2 prn
3 ref week
4 ref secs
5 subframe1
6 subframe2
7 subframe3
8 32-bit CRC (ASCII and Binary only)
Recommended Input:
LOG RAWEPHEMA ONCHANGED
Example Output:
#RAWEPHEMA,COM1,7,76.5,SATTIME,338,338430.000,00A00000,0000,33331;
29,338,345600,8B05486E2B255490003CD3E8731DDB8A24F57C45F225546000006
946137A0000000000,8B05486E2BA8250A4E2BB771090CD2097204D3A7FB1250A10
D95B354607D000000B2EA,8B05486E2C2F0072ADE5E6AE005C2829DA2F1B93D8620
667FFAAFC250D9A0000000000*D413845E
...
#RAWEPHEMA,COM1,4,76.5,SATTIME,338,338430.000,00A00000,0000,33331;
10,338,345584,8B05486E2B255490003CD3E8731DDB8A24F57C45FB94545F00000
50A52E70000000000,8B05486E2BA894FC2A2D01670FCEA8FCC0039DF4691822A10
C7F8E545F2B000000B2EA,8B05486E2C2FFFBA8488C0FDFFD127BDA71614E90FD78
438FFABE494F11E0000000000*6854985A
...
#RAWEPHEMA,COM1,0,76.5,SATTIME,338,338430.000,00A00000,0000,33331;
15,338,345600,8B05486E2B255492012CD3E8731DDB8A24F57C45FB56546000003
44A40460000000000,8B05486E2BA856FD4936E4E87361D4FD2F04D0F1270900A10
DA76554607C000000B2EA,8B05486E2C2FFFFD5C183A3FFFBE27061AC724B767F70
A30FFA2F056FDD40000000000*71B1AC43
88
Description
This field contains the message header, in ASCII or Binary
format. See Section 4.3 on Page 38.
Satellite PRN number
Ephemeris reference week number
Ephemeris reference time (seconds.)
Subframe 1 data.
Subframe 2 data.
Subframe 3 data.
Message ID: 41
Format
H
Ulong 4
Ulong 4
Ulong 4
Hex 30
Hex 30
Hex 32
Hex 4
EuroPak-15ab Receiver User Manual Rev 1
Data Logs
Binary Binary
Bytes Offset
0
H
H+4
H+8
H+12
H+42
H+72
H+104