About the GNSS optionsSatellite Navigation
17User Manual 1178.6379.02 ─ 16
2 About the GNSS options
Global navigation satellite system (GNSS) employs the radio signals of several naviga-
tion standards, like GPS, Galileo, GLONASS and BeiDou and NavIC. For several
years, GPS used to be the only standard available for civilian navigation through its
C/A civilian code.
Nowadays, the GNSS signals and systems are undergoing fast development, some
systems are getting modernized and some are new. In the foreseeable future, several
more GNSS satellites utilizing more signals and new frequencies are available.
The GNSS implementation in the R&S SMW enables you to generate composite sig-
nals of GNSS satellites, depending on the installed options. Signal generation is per-
formed in real time and thus not limited to a certain time period.
The following chapters provide background information on required options, basic
terms and principles in the context of GNSS signal generation. For detailed information
on the GNSS standards, see the corresponding specifications.
2.1 Required options
The basic equipment layout for generating GNSS signals includes:
●Standard or wideband baseband generator (R&S SMW-B10/-B9)
●Baseband main module (R&S SMW-B13/-B13T) or wideband baseband main mod-
ule (R&S SMW-B13XT)
●Frequency option (e.g. R&S SMW-B1003)
●At least one basic or modernized GNSS option, per signal path, see Table 2-1. The
modernized GNSS options do not require a basic GNSS option.
●Optional enhanced simulation capability options, per signal path, see Table 2-2.
– R&S SMW-B10: Standard GNSS, one simulation capability option per signal
path
– R&S SMW-B9: Advanced GNSS, one simulation capability option only
●Optional enhanced simulation capacity options, see Table 2-3:
Table 2-1: GNSS system options
Option Designation Remark
R&S SMW-K44 GPS C/A and P signals in L1 and L2 bands
R&S SMW-K66 Galileo E1 OS, E6, E5a and E5b signals in L1, L2 and L5 bands
R&S SMW-K94 GLONASS C/A signal in L1 and L2 bands
R&S SMW-K97 NavIC/IRNSS SPS signal in L5 band
R&S SMW-K98 Modernized GPS L1C, L2C and L5 signals in L1, L2 and L5 bands
R&S SMW-K107 BeiDou/COMPASS B1I and B2I signals in L1 and L5 bands
Q-component AS signals are not supported, see also
Table 2-8.
Required options