120 G12 OEM Board & Sensor Reference Manual
CT3: Combined Measurement/Position Data (Format 3)
$PASHS,RAW,CT3,[c1],s2,[f1]
This command enables or disables the combined measurement and position data
message format 3, where c1 is port A, B or C (optional port), s2 is ON or OFF, and
f1 is the optional numeric output interval setting supporting a range of 0.05 to 999
seconds, depending on the measurement update rate option installed.
$PASHQ,CT3,[c1]
This command allows you to query for a combined raw data message in the CT3
data structure. This message contains elements derived from the MCA and PBN
messages; c1 is the optional port designator for the response. If a port is not
specified, the receiver sends the response to the current port.
$PASHR,CT3
This message is not output unless the receiver is tracking at least one satellite. The
CT3 message contains an adjusted receive time (the time at which the data was
received) with satellite PRN numbers and channel assignments in association with
full carrier phase measurements, smoothed pseudoranges, and doppler
measurements. This message contains data for a maximum of three satellites. If
the receiver is tracking nine satellites, three CT3 messages are output. If the
receiver is tracking more than nine satellites, four CT3 messages are output. The
message is output in the format:
$PASHR,CT3,<Format 3 Data String + Checksum>
double [full_phase4] 8 Full carrier measurements in cycles as defined in the MCA message
double
[smooth_rng4]
8 Smoothed pseudorange measurement, derived from raw range data
and smoothing as defined in the MCA message
short [checksum] 2 Checksum is calculated by breaking the structure into shorts, adding
them together, and taking the least significant 16 bits of the result
Total bytes: 18*number of satellites in the message + 8 (80 for 4 satellites)
Table 4.57. $PASHR,CT2 Data String (Continued)
Binary Type Bytes Content
G12RevD.book Page 120 Tuesday, April 2, 2002 4:33 PM
To Next Page
Loading...