|
|
|
What is Space-Based ADS-B?
(Also called the Cloaked ADS-B Transponder System or "CATS" )
Our version of Space-Based ADS-B is patented as the ADS-B Link Augmentation System, or "ALAS". With it, an aircraft can be securely tracked in real-time most anywhere on earth.
CATS makes the aircraft almost invisible to unauthorized observers on the ground, yet authorized Air Traffic Control receivers can still see it in near-realtime. CATS was the first Space-Based ADS-B system and it has been flying since 2011!
ALAS is a true over-the-horizon air tra ffic management system capable of delivering an uncorrupted 1090ES or UAT payload every second from virtually any ADS-B avionics system to a Surveillance System Delivery Point (SDP) in near real-time from oceanic, remote or mountainous areas where a conventional line-of-sight connection to a terrestrial ADS-B ground station is either impossible, or impractical to maintain. And the best news is that our ALAS system is flying today and the the target cost for our Space-Based system will also be less than current ADS-C services.
 |
We feel that the increased speed and reliability of Globalstar´s new constellation, when coupled with the simplicity of our ALAS device, will far exceed the expectations of all those who have considered the option of a Space Based approach to air traffic control surveillance technology so far. The tested end-to-end system performance of the ALAS system using the Globalstar constellation is listed here:
| Applicability: |
ALAS is a simple, light weight, low cost peripheral that works with any existing 1090ES, or UAT avionics installation. Normal air-to-ground and air-to-air ADS-B transmissions are not interrupted. ALAS is also designed to be compatible with any nation´s existing ADS-B ground infrastructure.
|
| Coverage Area: |
100% of CONUS, GOMEX, Caribbean, NAT & NOPAC by 2016
100% of remaining requirements by 2019
|
| Availability: |
99.99% by 2016, 99.999% by 2019 |
| Capacity: |
>3,000 aircraft per satellite-gateway pair (approx 1,800sm diameter) |
| Latency: |
< 200ms from aircraft to ground, < 300ms end-to-end |
| Update Rate: |
1 second |
| Integrity: |
10E-6 |
| Accuracy: |
Displayed position difference between the RF line-of-sight derived position and the Space Based
ALAS derived position for the same target in the same UTC second was less than 50ft
98% of the time. |
| Security: |
UNIQUELY SECURE. ALAS establishes a unique two-way link with each aircraft that resists intrusion, jamming or spoofing and is the only form of ADS-B that can be easily encrypted. The simple tamper-proof design can also incorporate a self-powered backup system that will continue to broadcast an aircraft's position in the event of an unauthorized shutdown of the aircraft's primary ADS-B transponders |
| Scalability: |
HIGH. The relatively low cost and simplicity of the system architecture makes
enhanced coverage, availability and capacity possible with the addition of more
satellites and/or ground stations |
| Deployment: |
READY ALMOST IMMEDIATELY. The technology has been flight tested for more than 100 hours. Globalstar has launched 24 new Second Generation ALAS-capable satellites in the last two years. Essential Services could be deployed as early as 3Q2016 and Critical Services NLT 2019. |
| Cost: |
LOW. Buy-in and reoccurring costs for ANSP´s is minimal since ALAS requires no new satellites, or additional technology in space. It is also designed to interface easily with existing ADS-B ground infrastructure. The price point for Part 121 avionics is less than $40k and installation should be in the 20-25 MH range for most commercial aircraft. |
|
Please try the following links for further information:
To request a complete Space-Based ADS-B Press Kit, click Here
|
|
|
|