4 SBF Reference
GEOAlm
Number:
5897
"OnChange"
interval: block generated each time MT17 is received from an SBAS
satellite
This block contains the decoded almanac data for one SBAS satellite, as transmitted in SBAS
message type 17. A different
block is generated for each of the up to three almanac
data sets in MT17. Refer to section A.4.4.12 of the DO-229 standard for further details.
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 SBAS satellite of which the almanac is provided here (see 4.1.9)
Reserved0
u1
Reserved for future use, to be ignored by decoding software
DataID
u1
Data ID
Reserved1
u1
Reserved for future use, to be ignored by decoding software
Health
u2
Health bits
t_oa
u4
1
s
Time of applicability with the day ambiguity resolved. This is the time in
GPS seconds from Jan 6th, 1980.
Xg
f8
1
m
X position at
t_oa
Yg
f8
1
m
Y position at
t_oa
Zg
f8
1
m
Z position at
t_oa
Xgd
f8
1
m / s
X velocity at
t_oa
Ygd
f8
1
m / s
Y velocity at
t_oa
Zgd
f8
1
m / s
Z velocity at
t_oa
Padding
u1[..]
Padding bytes, see 4.1.5
375
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 ...