GNSS Approach Validation

ICAO has recommended that the States plan the implementation of LPV approach procedures for all headers, as there is no need of any ground infrastructure, unlike what happens with conventional ILS approaches. This strategy represents savings in costs and better accessibility to regional airports.

Similarly, to what occurs with conventional radio-aids, any new approach manoeuvre which is designed based on GNSS must be validated first by flight inspection. These inspection flights are usually carried out by conventional aircraft equipped with complex measuring systems for all types of radio-aids that entail a very high operating cost.

The methodology created by CANARD and ESSP, based on ICAO requirements for inspection procedures and its proof of concept demonstrator lead the way to perform LPV approaches validation, promoting:

  • Implementation of LPV approaches in all scenarios.
  • Big cost-saving maintenance of conventional radio-aids.
  • Light impact in airport traffic.
  • Solution complying with ICAO guidelines.

The efforts by CANARD and ESSP culminated in a field testing campaign with the collaboration of Expace. These field testing included the use of fixed-wing aircraft equipped with GNSS equipment to obtain measurements to validate the approach procedure designed.

The results of the field testing, combined with the analysis of GNSS data by ESSP and the use of flight simulators, provided enough evidence to validate the methodology proposed in the technical documentation elaborated.

It is in CANARD’s roadmap to use the findings of this project to develop a solution able to deliver the validation of GNSS approach procedures. This means that such solution will integrate with CANARD’s suite of tools and procedures to add an additional capability to the portfolio of solutions.  

Global Satellite Navigation System

GNSS Approach Validation with drones

In October 2017, CANARD started a research and development project for the use of drones in validation of GNSS approach procedures. This project was carried out by CANARD and ESSP, with the collaboration of Expace. The scope of the project was to create a validated procedure and tools (drones, simulator, data analysis, and others) to reduce the cost of designing, testing and deploying GNSS approach procedures.

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