4 SBF Reference
BDSRawB2a
Number:
4219
"OnChange"
interval: 3s
This block contains the 576 symbols of a BeiDou B-CNAV2 navigation frame, as received
from the B2a signal.
The receiver attempts to correct bit errors using the LDPC parity bits, but unrecover-
able errors are still possible at low C/N0. It is therefore always needed to check the CRC
status before using the navigation bits.
Parameter
Type Units
Do-Not-Use
Description
Sync1
c1
Block Header, see 4.1.1
Sync2
c1
u2
ID
u2
Length
u2
1
byte
u4
0.001
s
4294967295
u2
1
week
65535
u1
Satellite ID, see 4.1.9
CRCPassed
u1
Status of the CRC or parity check:
0:
CRC or parity check failed
1:
CRC or parity check passed
ViterbiCnt
u1
Not applicable
Source
u1
Signal type from which the bits have been received, as defined in 4.1.10
Reserved
u1
Reserved for future use, to be ignored by decoding software.
RxChannel
u1
Receiver channel (see 4.1.11).
NAVBits
u4[18]
NAVBits
contains the 576 symbols of a BeiDou B2a (B-CNAV2) naviga-
tion frame.
Encoding:
NAVBits
contains all the symbols of the frame, exclud-
ing the preamble. The first received symbol (i.e. the MSB of the PRN
field) is stored as the MSB of
NAVBits[0]
.
Padding
u1[..]
Padding bytes, see 4.1.5
327
Содержание PolaRx5TR
Страница 1: ...PolaRx5TR Reference Guide Applicable to version 5 5 0 of the Firmware ...
Страница 73: ...3 Command Line Reference Chapter 3 Command Line Reference 73 ...
Страница 108: ...3 Command Line Reference COM1 gca Ch05 CR R gca Ch05 ChannelAllocation Ch05 G01 auto 0 16000 COM1 108 ...
Страница 130: ...3 Command Line Reference COM1 gim CR R gim IonosphereModel off COM1 130 ...
Страница 147: ...3 Command Line Reference PVTMode Static StandAlone SBAS DGPS RTKFloat RTKFixed Cartesian1 COM1 147 ...
Страница 218: ...3 Command Line Reference COM1 esoc COM1 MeasEpoch CR R esoc COM1 MeasEpoch SBFOnce COM1 MeasEpoch COM1 218 ...
Страница 237: ...3 Command Line Reference COM1 237 ...
Страница 251: ...3 Command Line Reference Event type Command etime 1588343730 before 1440 after 1440 Planned Disk DiskEvent COM1 251 ...
Страница 279: ...3 Command Line Reference COM1 279 ...
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