4 SBF Reference
GALAlm
Number:
4003
"OnChange"
interval: output each time a new almanac set is received for a
satellite.
The
GalAlm
block contains the decoded almanac data for one Galileo satellite.
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
SVID of the Galileo satellite from which these almanac parame-
ters have been received (see 4.1.9)
Source
u1
See corresponding field in the
GalNav
block.
Source
can take the value 18 to indicate that the almanac
data contained in this block has been merged from INAV and
FNAV pages.
e
f4
Eccentricity
t_oa
u4
1
s
almanac reference time of week
delta_i
f4
1
semi-circle
Inclination angle at reference time, relative to nominal
OMEGADOT
f4
1
semi-circle / s
Rate of right ascension
SQRT_A
f4
1
m
1/2
Square root of the semi-major axis, relative to nominal
OMEGA_0
f4
1
semi-circle
Longitude of ascending node of orbit plane at weekly epoch
omega
f4
1
semi-circle
Argument of perigee
M_0
f4
1
semi-circle
Mean anomaly at reference time
a_f1
f4
1
s / s
SV clock drift
a_f0
f4
1
s
SV clock bias
u1
1
week
2-bit almanac reference week
u1
SVID of the Galileo satellite of which the almanac parameters are
provided in this block (see 4.1.9 for the SVID numbering conven-
tion).
health
u2
Bit field indicating the health status (HS) of the E5a, E5b, L1-B,
L1-A and E6-A signals:
Bit 0:
If set, bits 1 and 2 are valid, otherwise they must be
ignored.
Bits 1-2:
2-bit L1-B
HS
Bit 3:
If set, bits 4 and 5 are valid, otherwise they must be
ignored.
Bits 4-5:
2-bit E5b
HS
Bit 6:
If set, bits 7 and 8 are valid, otherwise they must be
ignored.
Bits 7-8:
2-bit E5a
HS
Bit 9:
Not applicable
Bits 10-11: Not applicable
Bit 12:
Not applicable
Bits 13-14: Not applicable
Bit 15:
Reserved
IODa
u1
4-bit Issue of Data for the almanac.
Padding
u1[..]
Padding bytes, see 4.1.5
350
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 ...