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HPL
- Usado para
- horizontal protection limit
- Definição1
- The radius of a circle in the horizontal plane (i.e. the plane tangent to the WGS-84 ellipsoid), with its centre being the true position, which describes the region which is assured to contain the indicated horizontal position.
- Fonte1
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Technical provision for mode S services and extended squitter. 2nd. ed. Montreal, 2012. (Doc. 9871 AN/460).
- Fonte2
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Guidelines for the implementation of lateral separation minima. Montreal, 2014. (Cir. 334 AN/184).
- Contexto
- Taking account of navigational error during RAIM outage also requires estimation of the probability of a loss of RAIM occurring. RAIM outages at the en-route 2 NM Horizontal Protection Limit (HPL) level are very rare.
- Subárea1
- Air Navigation