128
UBX Class RXM
This class transmits the status of receiver manager and received raw data, e.g.
pseudorange and carrier phase measurements, ephemeris, and almanac data.
RXM – RAW (0x02 0x10)
It periodically outputs raw measurement data. It defines all the necessary data for a
RINEX file.
Header ID Data Length Data Checksum
0xB5 0x62 0x02 0x10 8+N*24 See below CK_A CK_B
Data
Offset bytes Format Descriptions Notes
0 I4 GPS time of week (ms) Receiver time
4 I2 GPS week number Receiver time
6 U1 Number of satellites following
7 U1 Reserved
The following data will be repeated N times (number of satellites).
8+N*24 R8 Carrier phase measurement
(cycles)
L1 frequency
CP
16+N*24 R8 Pseudorange measurement (m) PR
24+N*24 R4 Doppler measurement (Hz) DO
28+N*24 U1 PRN number
29+N*24 I1 Measurement quality indicator >= 4 – PR+DO
>=5 – PR+DO+CP
<6 – likely loss of carrier lock in
the previous interval
30+N*24 I1 CN0 (dBHz) Carrier to noise ratio
31+N*24 U1 Indicator for loss of lock RINEX definition
