Global Navigation Satellite Systems and their wide Range of Applications

The Global Positioning System (GPS) was once the only operational global navigation satellite system (GNSS), and it was used all over the world to access location-based services (LBS). With the Russian GLONASS navigation system, which became fully operational at the end of 2011 and with the future deployment of China’s Compass and Europe’s Galileo navigation there will be increased focus on the capabilities and applications of such systems. This article gives an overview of the different navigation systems, explains the navigation channel and generic approach used by a commercial standard receiver to calculate a user position and generally describes channel acquisition and tracking. GNSS applications such as differential GNSS (D GNSS) and multiple frequency-band navigation, their complexity and benefits are also presented.

Vector Signal Generator Integrates Fully Fledged GNSS Simulator For Upcoming Commercial And Military Applications

With new software options, the R&S SMBV100A vector signal generator generates signals for GPS, GLONASS, and Galileo multimode receiver testing and performs real-time simulation of open-ended, real-world scenarios for up to 24 satellites. It also handles multipath propagation and satellite obscuration. The R&S SMBV100A is the first vector signal generator to simulate test signals with the military P code from multiple satellites for GPS position fixing.

Real-World Tests for GNSS Receivers

Cities represent particularly difficult conditions for satellite-based navi- gation systems as a result of obscuration and multipath propagation. So how does one ensure that a receiver is up to the challenge? This white paper discusses the challenges of GNSS design for real-world conditions and the functionality to look for when selecting GNSS test simulators.

Test Solutions for Simulating Realistic GNSS Scenarios

This paper starts with an overview of typical GNSS tests and a discussion of the advantages of using a signal generator over real world testing or using a record/replay system. After pointing out the most important requirements to ensure realistic GNSS simulations, Rohde & Schwarz’s platform for GNSS testing, the R&S® SMBV100A is introduced and its essential simulation capabilities are presented. A special focus is placed on features like simulating vehicle motion including attitude, signal obscuration and multipath, and antenna pattern modeling. These features make it possible to set up realistic and complex yet reproducible GNSS scenarios.

Test Solutions for Simulating Realistic GNSS Scenarios

This paper starts with an overview of typical GNSS tests and a discussion of the advantages of using a signal generator over real world testing or using a record/replay system. After pointing out the most important requirements to ensure realistic GNSS simulations, Rohde & Schwarz’s platform for GNSS testing, the R&S® SMBV100A is introduced and its essential simulation capabilities are presented. A special focus is placed on features like simulating vehicle motion including attitude, signal obscuration and multipath, and antenna pattern modeling. These features make it possible to set up realistic and complex yet reproducible GNSS scenarios.