Trimble Outdoors THUNDERBOLT 64057-00-ENG User Manual
Page 58
A Trimble Standard Interface Protocol
56 Trimble ThunderBolt E GPS Disciplined Clock User Guide
Note – All angles are in radians. Reference numbers refer to Global Positioning System
Standard Positioning Service Signal Specification. This specification is currently available
in Adobe Acrobat format at
www.navcen.uscg.gov/pubs/gps/sigspec/
.
Report Packet 0x59: Status of Satellite Disable or Ignore Health
This packet is sent in response to command packet 0x39.
Report Packet 0x5A: Raw Data Measurement Data
Packet 0x5A provides raw GPS measurement data. This packet is sent in response to
packet 0x3A or automatically if enabled with packet 0x35.
75-82
sqrt(A)
Double
Table 2.5
83-86
toe
Single
Table 2.5
87-90
Cic
Single
Table 2.5
91-98
(OMEGA)0
Double
Table 2.5
99-102
Cis
Single
Table 2.5
103-110
io
Double
Table 2.5
111-114
Crc
Single
Table 2.5
115-122
(OMEGA)
Double
Table 2.5
123-126
OMEGADOT
Single
Table 2.5
127-130
IDOT
Single
Table 2.5
131-138
Axis
Double
139-146
n
Double
147-154
r1me2
Double
= sqrt(1.0-e2)
155-162
OMEGA_n
Double
Derived from OMEGA_0, OMEGADOT
163-170
ODOT_n
Double
Derived from OMEGADOT
Byte
Item
Type
Value
Meaning
0
Operation
UINT8
3
The remaining bytes tell whether the
receiver has enabled each satellite for
selection.
6
The remaining bytes tell whether the
receiver heeds or ignores each satellite's
health as a criterion for selection.
1 to 32
Sat PRN
UINT8 (1
per SV)
0
Enable satellite selection or heed satellite's
health.
1
Disable satellite selection or ignore
satellite's health.
Byte
Item
Type
Units
0
SV PRN number
UINT8
1-4
Sample length
Single
milliseconds
5-8
Signal level
Single
AMU or dB-Hz
Byte
Item
Type
Meaning