4 SBF Reference
4.2.6
BeiDou Decoded Message Blocks
BDSNav
Number:
4081
"OnChange"
interval: block generated each time a new navigation data set is
received from a BeiDou satellite
The
block contains the decoded navigation data for one BeiDou satellite, as received
from the D1 or D2 nav message.
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 BeiDou satellite of which the ephemeris is given in this
block (see 4.1.9)
Reserved
u1
Reserved for future use, to be ignored by decoding software
u2
1
week
BeiDou week number as received from the navigation message
(from 0 to 8191)
u1
User range accuracy index (4-bit value)
SatH1
u1
1-bit autonomous health
u1
Age of data, clock (5 bits)
u1
Age of data, ephemeris (5 bits)
Reserved2
u2
unused, to be ignored by decoding software
T_GD1
f4
1
s
B1I equipment group delay differential
T_GD2
f4
1
s
−
2
·
10
10
B2I equipment group delay differential (set to the Do-Not-Use
value when unknown)
t_oc
u4
1
s
clock data reference time, in BeiDou system time (lagging GPS
time by 14 seconds).
a_f2
f4
1
s / s
2
SV clock aging
a_f1
f4
1
s / s
SV clock drift
a_f0
f4
1
s
SV clock bias
C_rs
f4
1
m
Amplitude of the sine harmonic correction term to the orbit ra-
dius
DEL_N
f4
1
semi-circle / s
Mean motion difference from computed value
M_0
f8
1
semi-circle
Mean anomaly at reference time
C_uc
f4
1
rad
Amplitude of the cosine harmonic correction term to the argu-
ment of latitude
e
f8
Eccentricity
C_us
f4
1
rad
Amplitude of the sine harmonic correction term to the argument
of latitude
SQRT_A
f8
1
m
1/2
Square root of the semi-major axis
t_oe
u4
1
s
Reference time ephemeris, in BeiDou system time (lagging GPS
time by 14 seconds).
C_ic
f4
1
rad
Amplitude of the cosine harmonic correction term to the angle
of inclination
OMEGA_0
f8
1
semi-circle
Longitude of ascending node of orbit plane at weekly epoch
C_is
f4
1
rad
Amplitude of the sine harmonic correction term to the angle of
inclination
i_0
f8
1
semi-circle
Inclination angle at reference time
355
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 ...