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The SAPIENT (Satellite and terrestrial architectures improving performance, security and safety in ATM) project addresses a new innovative application in the field of CNS/ATM system, focusing improvements to the exploitation of the synergies of Communications and Navigation technologies and the 4D trajectory management concept.

The project aims at providing a new and innovative application in the field of the future CNS/ATM system and a future European RPAS C2/C3 satellite DL for governmental missions. In the current SESAR phase, Future Communication Infrastructure has been defined as an infrastructure to share Air-Ground Datalinks based on:

  • multilink concept (terrestrial and satellite based),
  • navigation infrastructure (Multi-frequency Multi-constellation GPS\EGNOS\Galileo\etc.)
  • 4D trajectory management concept.

SAPIENT innovation is based on the idea of the integration of the accurate estimation of the flights 4D trajectories with the data obtained by dynamic and accurate monitoring and measuring of the performance of ATM Air/Ground Datalinks carried out by the aircraft transceivers (satellite and terrestrial communication user terminals) linked to the new navigation infrastructure.

SAPIENT idea is therefore based on including the DL communication resources in the list of the resources to be managed for the determination of the definition of the best DL resource and best 4D trajectory. The ATC trajectory prediction tools will be used in synergy with a FCI performance prediction tool: data will be collected and shared by the aircraft fleet enabling estimation of the ATM performance achievable by each available DL during full 4D trajectories. Gathering and processing of these data will allow to determine the best configuration of DL and appropriate allocation of resources to ATM system elements.

In order to achieve this goal, the SAPIENT system of systems will include and perform Monitoring and Controlling Functions:

  • Monitoring Fuctions will focus on the “instantaneous” capabilities of each available Datalink for each aircraft communication “session” (irrespective of the communication transaction needs), and on the “instantaneous” communication transaction needs between controllers and pilots for each aircraft (irrespective of the Datalink capabilities)
  • Controlling Functions aim at identifying the best matching between “instantaneous” communication demands and “instantaneous” communications capabilities, to best meet the Safety requirements.