Orient ОС-201 [99/244] Gpsephemgps ephemeris

Orient ОС-201 [99/244] Gpsephemgps ephemeris
COMNAV OEM BOARD REFERENCE MANUAL
Chapter 4. Log Messages
ComNav Technology Ltd.
80
CNT-OEM-RM001, Rev 1.8
Field#
Field Type
Data Description
Format
Binary
Offset
ecsx12)
variable
[CR][LF]
Sentence terminator (ASCII only)
-
-
Notice:
1. GLORAWEPH message includes four GLONASS raw ephemeris string, which is shown in the figure
4.2a.
2. Each of the first four strings is from m4 to KX8 including 84-bits. The corresponding string is set
with Bit84 ~ Bit1 from higher-order to lower-order bit.
3. According to the GLORAWEPHEM message, the 8
th
data field “string GLONASS data string”
includes 88 bits of 11 bytes. The first 4-bits is 0000, and the left 84-bits are reserved to store the
Bit84~Bit1 of one GLONASS raw ephemeris string. After the 11
th
byte, GLORAWEPHEM message is
reserved with 1 byte as shown in the following figure.
4.2.1.13 GPSEPHEM GPS Ephemeris
Description
A single set of decoded GNSS ephemeris whose message ID is different from NovAtel®
definition.
Message ID
71

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