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multilateration
- Definição1
- Multilateration (MLAT) System is a group of equipment configured to provide position derived from the secondary surveillance radar (SSR) transponder signals (replies or squitters) primarily using time difference of arrival (TDOA) techniques. Additional information, including identification, can be extracted from the received signals.
- Fonte1
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Annex 10 to the Convention on International Civil Aviation: aeronautical telecommunications: volume 4: surveillance and collision avoidance systems. Montreal, 2014. (Annex 10).
- Definição2
- Multilateration (MLAT) is the ICAO standard system used to identify the position of an aircraft based on an aircraft's transmission of a squitter or as response to an interrogation by a ground-based SSR or by active MLAT.
- Fonte2
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Handbook on radio frequency spectrum requirements for civil aviation. Montreal, 2014. (Doc. 9718 AN/957).
- Fonte3
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Aeronautical surveillance manual. Montreal, 2010. (Doc. 9924 AN/474).
- Nota adicional1
- Acronym in English: MLAT
- Nota adicional2
- Multilateration can theoretically be performed using any signals transmitted periodically from an aircraft. However, systems used for civil purposes are based only on SSR transponder signals.
- Nota adicional3
- The limitations of multilateration are: a) aircraft have to be equipped with a functioning transponder; b) the transmitted signal has to be correctly detected at multiple receiving stations. This may present problems finding suitable sites for receivers, especially in en-route applications; and c) communication links are needed between remote receiver/transmitter sites and the master processing station.
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