REFERENCE MANUAL - FTP Directory Listing - Trimble

A
TRIMBLE STANDARD INTERFACE PROTOCOL (TSIP)
Report Packet 0x83 - Double-Precision XYZ Position Fix and Bias
Information
This packet provides current GPS position fix in XYZ ECEF coordinates. If the I/O
Position option is set to XYZ ECEF and the I/O Precision of Position option is set to
Double (see Packet 0x35), the receiver sends this packet each time a fix is computed.
The data format is shown below.
Table A.50
Report Packet 0x83 Data Formats
Byte Item Type Units
0-7 X Double meters
8-15 Y Double meters
16-23 Z Double meters
24-31 clock bias Double meters
32-35 time-of-fix Single seconds
The time-of-fix is in GPS time or UTC, as selected by the I/O “timing” option.
Packet 42 provides a single-precision version of this information.
Report Packet 0x84 - Double-Precision LLA Position Fix and Bias
Information
This packet provides current GPS position fix in LLA coordinates. If the I/O Position
option is set to LLA and the Precision of Position option is set to Double (see Packet
0x35), the receiver sends this packet each time a fix is computed. The data format is
shown below.
Table A.51
Report Packet 0x84 Data Formats
Byte Item Type Units
0-7 latitude Double radians; + for north,
- for south
8-15 longitude Double radians; + for east,
- for west
16-23 altitude Double meters
24-31 clock bias Double meters
32-35 time-of-fix Single seconds
C
The time-of-fix is in GPS time or UTC, as selected by the I/O “timing” option.
WARNING – When converting from radians to degrees, significant and readily visible
errors will be introduced by use of an insufficiently precise approximation for the
constant p (PI). The value of the constant PI as specified in ICD-GPS-200 is
3.1415926535898.
158 Copernicus GPS Receiver