Specifications

IntroductionGPS and Assisted GPS
14Operating Manual 1171.5248.12 ─ 15
2.4.6 Real-Time S.P.O.T. display
The real-word situation of disappearance and re-appearance of satellites, as well as the
dynamic display of several parameters like HDOP, PDOP, receiver's location, elapsed
time and the trajectory of a moving receiver can be observed in real-time in the special
"Real-Time S.P.O.T." (Satellites and Position Online Tracker) display. The displayed val-
ues are updated every 5 seconds.
The Real-Time S.P.O.T. display is enabled for "Auto SV Selection" and "Auto SV Selec-
tion and Update" modes only.
2.4.7 Multipath signal generation
The R&S Signal Generator provides the possibility to simulate the GPS signal of one or
more satellites that undergoes multipath propagation effects.
The generic workflow is described in chapter 2.8.2, "Generating Multipath Scenar-
ios", on page 20.
2.5 Enhancements of Option Assisted GPS (R&S-K65)
2.5.1 Prerequisites
The option Assisted GPS (R&S-K65) is only available for 2-path instruments equipped
with two options GPS (R&S-K44). It enhances the option GPS (R&S-K44) with function-
alities required for A-GPS test scenarios for 3GPP FDD and GSM.
2.5.2 Full set of pre-defined test scenarios for A-GPS 2G/3G Protocol and
Conformance Test Cases
An R&S Signal Generator equipped with the option Assisted GPS supports all test sce-
narios for A-GPS Protocol and Conformance Test cases. The following predefined A-
GPS test scenarios are currently supported:
●
GSM Signaling Test Scenario (3GPP TS 51.010-1 v.7.7.0)
●
GSM Performance Test Scenario#1 (3GPP TS 51.010-1 v.7.7.0)
●
GSM Performance Test Scenario#2 (3GPP TS 51.010-1 v.7.7.0)
●
GSM Performance Test Scenario#3 (3GPP TS 51.010-1 v.7.7.0)
●
3GPP FDD Signaling Test Scenario (3GPP 34.108 v.8.0.0, 3GPP TS 34.123-3 v.
6.4.0)
●
3GPP FDD Performance Test Scenario#1 (3GPP 34.108 v.8.0.0, 3GPP 34.171 v.
7.0.1)
●
3GPP FDD Performance Test Scenario#2 (3GPP 34.108 v.8.0.0, 3GPP 34.171 v.
7.0.1)
Enhancements of Option Assisted GPS (R&S-K65)