Aeronautical Surveillance and Planning by advanced satellite-implemented applications

ASPASIA project is placed in the framework of improvement and complement of surveillance applications, more concretely Airborne Separation Assistance Systems (ASAS) and Approach Management systems (AMAN), using Satellite Communication systems (Satcom). 

Satellite systems have the potential to provide improvements to aeronautical surveillance activities by complementing existing ADS-B technologies, such as
VHF Data Link Modes, 
Universal Access Transceiver (UAT)  and 
 Radar Mode S Extender Squitter. 
Satcom will also provide new capabilities that these above technologies cannot easily offer. Some of the benefits identified are:
 Extension of sky region survey without deployment of additional ground stations, due to satellite capacity to provide global coverage. This should enable worldwide dissemination of procedures based on ASAS applications, including oceanic and desert areas.
 Allow ATM processes in which separated regions are involved (removal of ground systems coverage limitations, and allow ATM process  structured by traffic flows characteristics instead of geographical borders).
 Extension of Traffic Information Service Broadcast (TIS-B) functionality, allowing Air Traffic Control Centre to send situational awareness information to aircraft that are not ADS-B equipped.

Capacity complement to ADS-B technologies that are limited by the shortage of spectrum resources available for data links in the aeronautical bands. Especially owing to the Satcom ability to efficiently solve the problem of simultaneous and region-wide distribution of aircraft-derived flight data (positions and intents of aircraft) to all interested parties.
 Reduction of ATCO communications latency times and provision of optimum flight levels in NAT airspace due to satellite capacity to provide pseudo-real time high-resolution surveillance services with global coverage.
 Increase of the 4D resolution of ATM surveillance coverage, extending well beyond the geographical limits of current ground based systems, thus providing enhanced en-route flexibility according to the current Target Levels of Safety (TLS).

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