ADSB messages transmission via satellites communication channel Contents

ADS-B messages transmission via satellites communication channel

Contents: - Notion of ADS-B technology - Benefits of Iridium satellites usage - Diagram of ADS-B messages transmission via Iridium satellites - Modeling by Net. Cracker and obtained results Modeling of ADS-B messages transmission via Iridium satellites communication channel 2

Purposes of the presentation: - to investigate ADS-B messages transmission via communication channel by means of Iridium satellites; - to model ADS-B messages transmission via Iridium satellites communication channel. Modeling of ADS-B messages transmission via Iridium satellites communication channel 3

Automated Dependent Surveillance - Broadcast ADS-B - means by which aircraft, aerodrome vehicles and other objects can automatically transmit and/or receive data such as identification, position and additional data, as appropriate, in a broadcast mode via a data link. There are 2 possible functions of the ADS-B message: ADS–B OUT broadcasts information about aircraft through an onboard transmitter directly to surrounding aircraft and ATC body. ADS-B IN receives data and provides it to in-cockpit displays. Modeling of ADS-B messages transmission via Iridium satellites communication channel 4

Automated Dependent Surveillance - Broadcast Modeling of ADS-B messages transmission via Iridium satellites communication channel 5

Iridium satellite constellation The Iridium satellite constellation is a large group of satellites providing voice and data coverage over the whole Earth surface. Why have we decided to choose Iridium satellite constellation as a channel of ADS-B messages transmission? 1) 100% global coverage; 2) Low latency due to signal travel; 3) High availability (Iridium: 66 satellites; Inmarsat: 11); 4) High productivity: ability to transmit data at a rate of 10 Mbit/s; 5) Intersatellite connection. Modeling of ADS-B messages transmission via Iridium satellites communication channel 6

Diagram of ADS-B messages transmission via Iridium satellites Modeling of ADS-B messages transmission via Iridium satellites communication channel 7