ADS has developed a suite of systems to generate and analyse GBAS / LGF transmissions, whether they be in the data format of LAAS or GRAS. These systems consist of two principal entities:

• Hardware: Mini-VDR VDB Transmitter, Mini-VDR VDB Receiver, VDB Power Transmitter, VDB Receiver
• Software : VDB Generator, VDB Analyser, GBAS Analyser

Hardware

ADS manufactures both VDB transmitters and VDB receivers which are available in two different hardware formats: a 19" rack mountable and a smaller portable Mini-VDR.

The Mini-VDR platform is ideally suited to organisations wanting to generate low power VDB transmissions (50mW) or monitor a VDB signal in space either in the laboratory in the field. The Mini-VDR is also available in the mobile VDB (MVDB) platform which is a fully portable briefcase system which includes the Mini-VDR transmitter or receiver, laptop PC, batteries, chargers etc. The MVDB platform provides at least 3 hours operation off its internal batteries.

The 19" rack solutions are designed to fit standard 19" racks and support continuously operating GBAS systems as either a transmitter (20W to 80W) or as a receiver.

In addition to providing the received data both the Mini-VDR receiver and the 19" rack receiver are also capable of providing a range of RF parameters with each received VDB packet.

Software

The VDB Generator, VDB Analyser and GBAS Analyser applications are designed to operate on a PC. The VDB Generator enable users to construct DO-246 messages in support of DO-253 MOPS testing. The VDB Analyser and GBAS Analyser applications have the ability to show VDB RF and message data to the user. For GBAS environments, the GBAS analyser utilises a GPS receiver to provide DGPS and FAS waypoint solutions to monitor and test GBAS ground stations.

Integrated Systems

MVDB Generator - Mobile VDB Generator System integrates the MVDL platform with VDB Generator application.

MVDB Analyser - Mobile VDB Analyser System integrates the MVDL platform with the VDB Analyser application.

MVDB GBAS Analyser - Mobile VDB GBAS Analyser System integrates the MVDL platform with the VDB Analyser and GBAS Analyser applications.