Odsek za sisteme in vodenje

Inštitut Jožef Stefan

Helicopter and Aeronef Navigation Airborne System Experimentations (PEGASE)

Vodja projekta:

prof. dr. Stanko Strmčnik

Trajanje:

1.9.2006 - 31.9.2009

Financiranje:

Projekt 6. okvirnega programa EU, številka pogodbe AST5-CT-2006-030839

Povzetek:

Approaches, landings and take-offs, or more generally, manoeuvres or navigation in the terminal zone, are among the most critical tasks in aircraft operation. Today, the only certified navigation system available for landings, ground rolls and take-offs are the ILS and MLS which require heavy airport infrastructures; recently, one can notice a trend towards the GNSS systems (Global Navigation Satellite Systems) which have not the necessary integrity. This clearly highlights the unmet need for new systems which could either replace or complement existing systems.
PEGASE is a feasibility study of a new Navigation System which allows a three dimensional truly autonomous approach and guidance for airports and helipads and improves the integrity and accuracy of GNSS differential navigation systems. This new Navigation System relies on three key technologies:

• The specification of a reliable ground reference database
• Innovative correlation techniques between sensors and the onboard ground database
• A robust servoing algorithm for the management of the trajectories of both fixed wing and rotary wing aircraft.

The ambitions of the PEGASE project are twofold. Firstly, it will pave the way for a new all weather autonomous standard Navigation System by validating the technologies necessary to achieve a cost effective navigation means that has higher accuracy and integrity than existing ones (typically ILS/MLS), yet is not susceptible to jamming. Secondly, it will contribute to demonstrating that such a new Navigation System can help reduce noise levels and fuel consumption through new procedures in the terminal zone and address flow delays in adverse weather conditions. In this way, PEGASE contributes to the enhancement of the future 2012 Air Traffic Management.
The main objectives of the study are:

• to assess the feasibility of the autonomous, all weather conditions, localization and guidance system;
• to determine the performance required for the vision sensors (Visual, Infra Red, Electromagnetic) and the ground reference database in order to provide an accurate guidance from the final approach leg to full stop on the taxiway/helipad and for the take-off run from alignment up to the final take-off segment .

The expected results of the study will include:

• The System performances (accuracy, integrity …) based upon normal and limit cases (sensitivity and robustness with respect to environmental conditions will be assessed);
• Sensor performances specifications (these specifications could lead to some fusion process on the sensors outputs);
• The definition of the key elements (altimetry, ground element features …) of the database;
• The definition of a ground database generation process delivering the best available altitude reference data with a quantified error distribution;
• A generic functional system architecture;
• Operational concepts (minimum requirements on trajectories to perform the task …) and System limitations (decision height …);
• Elements for a certification road-map and indications for regulations update;
• Preliminary estimate of the cost of the NavAid System.

The study will be carried out with existing simulation tools and Man Machine Interface (MMI) developed for fixed wing and rotary wing aircraft. It is not intended to study in this project dedicated MMI since no specific need has been identified. Coupling to systems such as Synthetic Vision System could be addressed in a further development stage.

Spletna stran projekta: http://dassault.ddo.net/pegase/