New APNT ranging signals as an opportunity for rationalizing ground infrastructure

Abstract

ICAO Annex 10 -Attachment H provides a guidance for a rationalization of conventional radio navigation aids to support Performance-Based navigation. An optimization of terrestrial navigation infrastructure, which includes a rationalization effort and coordinated evolution, is necessary to maintain a sufficient level of safety and operations in case of GNSS outage. This is an opportunity to introduce new signals with better ranging performance. The hybridization of new systems with legacy DME enabling a fully backup navigation system. The hybrid sytems make possible to decommission older radio navigation solutions. In this paper we present our assessment tool: marginal benefit. It is the ratio between potential DME to be decommissioned and the number of new signals deployed.

Multi-DMEs for alternative position, navigation and timing (A-PNT)

“…Because of the high VDOP, the vertical component of the position must be obtained by other means. Since air data systems are installed in all certified aircraft, the barometric altimeter is the obvious source of information that can be used to compensate in the case of poor geometry (Berz et al, 2013;Nossek et al, 2015;Battista et al, 2018).…”