4 SBF Reference
GPSCNav
Number:
4042
"OnChange"
interval: block generated at each change of ephemeris, clock or
group delay parameters
The
block contains the decoded CNAV navigation data for one GPS satellite. The
ephemeris and health parameters are extracted from message types (MT) 10 and 11. The
clock correction and group delay correction parameters are extracted from MT30.
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
ID of the GPS satellite of which the parameters are given in this
block (see 4.1.9)
Flags
u1
Bit field:
Bit 0:
Alert: Set to 1 if at least one of the message types of
which the contents is included in this block had its alert
bit (bit 38) set to 1. Set to 0 otherwise.
Bit 1:
Integrity Status Flag (bit 272 of MT10).
Bit 2:
L2C Phasing (bit 273 of MT10).
Bits 3-5: Reserved
Bit 6:
L2C used: bit set if at least part of the navigation data
has been decoded from L2C.
Bit 7:
L5 used: bit set if at least part of the navigation data
has been decoded from L5.
u2
1
week
Week number (
WN
n
, 13 bits from MT10)
Health
u1
L1, L2 and L5 signal health (3 bits from MT10). LSB is L5 health.
i1
Elevation-Dependant accuracy index (
URA
ED
, 5 bits from
MT10)
t_op
u4
1
s
Data predict time of week (
300
∗
t
op
, 11 bits from MT10/30)
t_oe
u4
1
s
Ephemeris data reference time of week (
300
∗
t
oe
, 11 bits from
MT10/11)
A
f8
1
m
Semi-major axis at reference time (
∆
A
, 26 bits from MT10, plus
A
ref
)
A_DOT
f8
1
m / s
Change rate in semi-major axis (
˙
A
, 25 bits from MT10)
DELTA_N
f4
1
semi-circle / s
Mean motion difference from computed value at reference
time (
∆
n
0
, 17 bits from MT10)
DELTA_N_DOT
f4
1
semi-circle / s
2
Rate of mean motion difference from computed value (
˙
∆
n
0
, 23
bits from MT10)
M_0
f8
1
semi-circle
Mean anomaly at reference time (
M
0
−
n
, 33 bits from MT10)
e
f8
Eccentricity (
e
n
, 33 bits from MT10)
omega
f8
1
semi-circle
Argument of perigee (
ω
n
, 33 bits from MT10)
OMEGA_0
f8
1
semi-circle
Reference right ascension angle (
Ω
0
−
n
, 33 bits from MT11)
OMEGADOT
f8
1
semi-circle / s
Rate of right ascension (
∆
˙
Ω
, 17 bits from MT11, plus
˙
Ω
ref
)
i_0
f8
1
semi-circle
Inclination angle at reference time (
i
0
−
n
, 33 bits from MT11)
IDOT
f4
1
semi-circle / s
Rate of inclination angle (
˙
i
0
−
n
, 15 bits from MT11)
C_is
f4
1
rad
Amplitude of the sine harmonic correction term to the angle of
inclination (
C
is
−
n
, 16 bits from MT11)
C_ic
f4
1
rad
Amplitude of the cosine harmonic correction term to the angle
of inclination (
C
ic
−
n
, 16 bits from MT11)
342
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 ...