Extended ADS (ADS-X) refers to the integration of multilateration techniques into an ADS-B surveillance infrastructure to mitigate the equipage, validation and backup issues surrounding ADS-B and to enable a faster, more comprehensive and more cost-effective ADS-B implementation.
First, ADS-X supports full fleet coverage in advance of equipage. Because multilateration techniques process (Mode A/C/S) transponder signals, the network of ground stations is able to determine the position of aircraft without the need for new avionics. This allows ANSPs to deploy the next generation, low cost technologies without the need for a contentious early mandate for equipment retrofit, while still potentially avoiding the need to replace SSR systems.
The second ADS-B implementation challenge - the need for independent backup and validation of ADS-B self-reported position, is also addressed by the inclusion of multilateration capability in the ADS-B network, as each ADS-B position report is validated in real-time using multilateration.
The FAA, in its industry briefings, has both confirmed the need for a backup and validation system for ADS-B and has short listed three candidate strategies to address this requirement. The first candidate strategy relies on the continued use of a (reduced) SSR network, which is likely to have a significant impact on the economics of the overall program. The second and third strategies are both based on the use of multilateration as the backup technique. Furthermore, it is clear that the backup and validation system will not only mitigate the risk of accidentally erroneous self-reported position, but will also address the potential for deliberate spoofing of aircraft position.
“ADS-X integrates MLAT techniques into the existing ADS-B infrastructure to help alleviate equipage, validation, and backup issues. ADS-X is also cost effective, in that the ground stations process Mode A/C/S transponder signals without the need for expensive avionics upgrades.”
- Mellissa Diamond, Frost & Sullivan Research Analyst
Pardubice, November 20th, 2013 The ERA MSS system installed at the Sochi International Airport went officially operational in November to ensure the future safety of thousands of participants flying to the Caucasus region of Russia as part of the 2014 Olympic Games.
Pardubice, October 18th, 2013 Participants in the NATO Airforce Armaments Group summit from several NATO countries visited the headquarters of ERA Company in Pardubice on October 18th 2013. The primary goal of the visit was the introduction of alternative radiolocation methods and a presentation of the ERA military solutions portfolio (particularly its precision approach functionality) to members of the Aerospace Capability Group 5 on Global Mobility.
Tashkent, October 2nd - 4th, 2013 Two specialists from ERA Company were invited to the conference EURASIA held in Tashkent on October 2nd – 4th, 2013. ERA traditionally participated as a permanent observer at this 28th gathering of the coordinating council and group of aeronavigation experts (KGE) from eight post-soviet republics.
Prague, September 2013 The ERA Company gratefully accepted an invitation from the Czech Air National Service Provider at the beginning of autumn of this year and organized a two days workshop for its guests at the ANSP headquarters in Jeneč in order to present the results of newly developed surveillance technologies such as MSPSR.
Prague, September, 2013 ERA Company took part in the 71th NEDBAG (NATO Emitter DataBase Advisory Group) conference held in Prague from September 23th – 26th 2013.