Patent ID: 9611053
Date: 2017-04-04
CPC Classifications: B64D,G05D,G08G

Claim:
1. A method of facilitating the approach to a platform by an aircraft, comprising: a preparatory step (STP a parameter-setting step (STP an approach flight stage (STP during the preparatory step (STP prior to the approach flight stage commencing at the initial approach fix (IAF), a step of using an integrity-checking module to determine the value of a position integrity performance (RNP) required for a localization system of the aircraft, this position integrity performance (RNP) being equal to the minimum value between firstly a predetermined performance threshold and, secondly, the quotient of the difference of the lateral distance minus the positioning error for a target platform to be reached as divided by two according to the equation:  in which “RNP” represents the required position integrity performance, “LOV” represents the lateral distance, “TPE” represents the positioning error, “k3” represents the predetermined threshold performance, and “/” represents the division sign; and during a monitoring step performed during the approach flight stage (STP using the integrity-checking module to compare the position integrity performance (RNP) with the position integrity radius (HPL); and generating an alert if the position integrity radius (HPL) is greater than the position integrity performance (RNP).