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
Summary of Contents for PolaRx5TR
Page 1: ...PolaRx5TR Reference Guide Applicable to version 5 5 0 of the Firmware ...
Page 73: ...3 Command Line Reference Chapter 3 Command Line Reference 73 ...
Page 130: ...3 Command Line Reference COM1 gim CR R gim IonosphereModel off COM1 130 ...
Page 237: ...3 Command Line Reference COM1 237 ...
Page 279: ...3 Command Line Reference COM1 279 ...
Page 294: ...4 SBF Reference Chapter 4 SBF Reference 294 ...