Rohde & Schwarz EVSG1000, User Manual

Page: 121 / 311

GBAS/SCAT-I Mode (Options R&S EVSG-K4/-K5)
R&S
®
EVSG1000
121 User Manual 1178.6227.02 ─ 04
7 GBAS/SCAT-I Mode (Options R&S EVSG-
K4/-K5)
Access : [Mode] > "GBAS"
Access VNC : [m] > Down arrow key
The R&S EVSG-K4/-K5 options are firmware applications that add functionality to per-
form GBAS and SCAT-I analysis on the R&S EVSG1000.
The R&S EVSG-K4 option enables you to receive and analyze the very high frequency
(VHF) data broadcast (VDB) signal-in-space transmitted from a ground-based aug-
mentation system (GBAS) ground subsystem to the airborne subsystem. This imple-
mentation is in line with the specification ICAO AN10 Vol1 [3] and RTCA DO-246 [1]
(see
Chapter C, "References" , on page 295).
Similarly, using option R&S EVSG-K5, data from special category I (SCAT-I) systems
can be received and analyzed. The main difference is the content of the message data.
This implementation is in line with the specification ICAO AN10 Vol1 [3] and RTCA
DO-217 [2] (see
Chapter C, "References" , on page 295).
The R&S EVSG-K4/-K5 applications feature:
●
Receiving GBAS signal data from a GBAS ground station in a frequency range
between 108.025
MHz and 117.950 MHz with a channel spacing of 25 kHz
●
Receiving SCAT-I signal data from a SCAT-I ground station in a frequency range
between 108.025
MHz and 117.950 MHz with a channel spacing of 25 kHz
●
Analyzing the RF characteristics, signal strength and frequency accuracy of the
GBAS/SCAT-I signal
●
Demodulating, decoding and displaying GBAS/SCAT-I signal data
●
Analyzing up to 8 time slots or individual time slot details in the GBAS/SCAT-I sig-
nal data
●
Analyzing individual Final Approach Segment (FAS) data blocks
●
Logging and storing up to 9999 lists of received GBAS/SCAT-I signal data
● Basics on GBAS and SCAT-I Analysis .................................................................121
● GBAS / SCAT-I Measurement Information ............................................................125
● GBAS / SCAT-I Measurement Views and Results ................................................ 126
● GBAS/ SCAT-I Measurement Configuration ......................................................... 139
● Message XML Interface ........................................................................................ 142
7.1 Basics on GBAS and SCAT-I Analysis
The following topics summarize some background information on the GBAS and other
avionics-related standards. The provided overview information is intended as an
explanation of the used terms and does not aim to be comprehensive.
Basics on GBAS and SCAT-I Analysis