GSS4150

As air transport continues to grow, the use of Global Satellite Navigation Systems (GNSS) for Flight Navigation is increasing. So too is the move towards using systems that support Required Navigation Performance (RNP). Augmentation Systems to GNSS, both Satellite-Based Augmentation Systems (SBAS), such as Wide Area Augmentation System (WAAS) and European Geostationary Navigation Overlay System (EGNOS) are already in use but the adoption of the Local Area systems such as the Ground-Based Augmentation Landing System (GBAS Landing System) for airport precision approach and category I, II, and III landing operations is on the rise. A critical system such as this must meet stringent performance indicators for RNP and be sure to

maintain accuracy and stability under the full range of real-world conditions.

In order to help developers and integrators to test the airborne GNSS receiver in their GBAS Landing System, Spirent has developed the GSS4150 solution. The GSS4150 GBAS Landing System VDB Simulator has been designed to add a single, integrated source of the VHF Data Broadcast (VDB) augmentation signal to Spirent’s range of GNSS RF constellation simulators - in a rack-mountable chassis.

Specifications

The GSS4150 comprises a VHF signal source generator and software extensions contained within Spirent’s SimGEN software. It supports message types:

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