Sbas Corrections; About Sbas - R&S SMW-K44 User Manual

Satellite Navigation

13 SBAS Corrections

Option: R&S SMW-K44 and R&S SMW-K106
A short introduction to the satellite-based augmentation system (SBAS) is provided in
"Brief introduction to the satellite-based augmentation systems (SBAS)"
This section gives an overview of the SBAS features in the context of this software.

13.1 About SBAS

The SBAS uses three types of services to improve augmentation:
●
Transmission of ranging information for improved visibility
●
Broadcast of correction data (error estimations) for improved accuracy
●
Broadcast of coarse integrity information for improved reliability
The SBAS specification
carry these coarse integrities or both integrity and wide area correction data informa-
tion. The correction data can be fast, long-term and ionospheric, where:
●
The fast corrections eliminate pseudorange errors
●
The long-term corrections overcome errors in the satellites position or slow chang-
ing clock and ephemeris errors
●
The ionospheric corrections are based on the user location
SBAS message types (MT)
According to
predefined message types. In this implementation, the SBAS information is not defined
on a message by message basis but grouped according to the SBAS service and cor-
rection data type.
The
information on the section, describing the related settings.
Table 13-1: SBAS message types (MT)
MT
1
2 to 5
6
7
9
10
User Manual 1178.6379.02 ─ 01
RTCA MOPS DO-229
RTCA MOPS
Table 13-1 list the SBAS message type with brief information on their content and
Content
PRN masks assailments
Fast corrections
Integrity information
Fast correction degradation factor
GEO navigation message
Degradation parameters
defines different message types, that
DO-229, SBAS correction data is transmitted by a subset of
Related settings
See Chapter 13.4.3.3, "PRN Mask
on page 151
See Chapter 13.4.3.4, "Fast Correction
on page 152
Integrity inforamtion is included in
"Fast Correction
See Chapter 13.4.3.6, "Fast Correction Degradation
Factor Configuration
See Chapter 13.4.2.2, "Broadcasted Orbit, Clock and
Time Conversion
See "Degradation Factors"
SBAS Corrections
About SBAS
on page 17.
Settings",
Settings",
Chapter 13.4.3.4,
Settings", on page 152
Settings", on page 156
Settings", on page 144
on page 162
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