4 SBF Reference
4.2.2
Navigation Page Blocks
GPSRawCA
Number:
4017
"OnChange"
interval: 6s
This block contains the 300 bits of a GPS C/A subframe. It is generated each time a new
subframe is received, i.e. every 6 seconds.
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
Bit field:
Bits 0-4:
Signal type from which the bits have been received, as de-
fined in 4.1.10
Bits 5-7:
Reserved
FreqNr
u1
Not applicable
RxChannel
u1
Receiver channel (see 4.1.11).
NAVBits
u4[10]
NAVBits
contains the 300 bits of a GPS C/A subframe.
Encoding: For easier parsing, the bits are stored as a succession
of 10 32-bit words. Since the actual words in the subframe are 30-bit
long, two unused bits are inserted in each 32-bit word. More specifically,
each 32-bit word has the following format:
Bits 0-5:
6 parity bits (referred to as
D
25
to
D
30
with the last transmitted bit of the previous word (
D
∗
30
)).
Bits 6-29: source data bits (referred to as
d
n
in the GPS ICD). The first
received bit is the MSB.
Bits 30-31: Reserved
Padding
u1[..]
Padding bytes, see 4.1.5
315
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 ...
Страница 294: ...4 SBF Reference Chapter 4 SBF Reference 294 ...