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B GSOF Messages
146 SPSx51 Modular GPS Receivers User Guide
Batt/Mem
This message provides information relating to the receiver battery and memory. It
contains the following data:
• Remaining battery power
• Remaining memory
Attitude
This message provides attitude information relating to the vector between the Heading
antenna and the Moving Base antenna. It contains the following data:
• Tilt or vertical angle, in radians, from the Heading antenna to the Moving Base
antenna relative to a horizontal plane through the Heading antenna
• Heading or yaw, in radians, relative to True North
• Range or slope distance between the Heading antenna and the Moving Base
antenna
Table B.14 Batt/Mem (Type 37 record)
Field Item Type Value Meaning
0 Output record type Char 25h
1 Record length Char 0Ah Bytes in record
2–3 Battery capacity Unsigned short percentage Remaining battery capacity in percentage
4–11 Remaining memory Double hours Estimated remaining data logging time in
hours
Table B.15 Attitude (Type 27 record)
Field Item Type Value Meaning
0 Output record type Char 1Bh Attitude information
1 Record length Char 2Ah Bytes in record
2–5 GPS time Long msecs GPS time in milliseconds of GPS week
6 Flags Char See Table B.23 Flag bits indicating validity of attitude components
7 Number of SVs used Char 00h-0Ch Number of satellites used to calculate attitude
8 Calculation mode Char See Table B.24 Positioning mode
9 Reserved Reserved
10–17 Tilt Double radians Tilt relative to horizontal plane
18–25 Yaw Double radians Rotation about the vertical axis relative to True
North
26–33 Reserved Reserved
34–41 Range Double meters Distance between antennas
42–43 PDOP Short 0.1 Position Dilution of Precision