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EPU (1)
Usado para
estimated position uncertainty
Definição1
95 per cent accuracy bound on horizontal position. EPU is defined as the radius of a circle, centred on the reported position, such that the probability of the actual position being outside the circle is 0.05.
Fonte1
INTERNATIONAL CIVIL AVIATION ORGANIZATION. Manual on the universal access transceiver (UAT). 2nd ed. Montreal, 2012. (Doc. 9861 AN/460).
Definição2
The measure of the accuracy of a position estimate.
Fonte2
INTERNATIONAL CIVIL AVIATION ORGANIZATION. Assessment of ADS-B and multilateration surveillance to support air traffic services and guidelines for implementation. Montreal, 2012. (Cir. 326 AN/188).
Nota adicional1
When reported by a GNSS system, EPU is commonly called HFOM (horizontal figure of merit).
Related Term
HFOM