Patent ID: 8447520

Claim:
An assistance device for navigation and guidance of an aircraft, said device ( 1 ) comprising: first calculation means ( 6 ) for determining a position of the aircraft; second calculation means ( 7 ) for determining deviations between said position of the aircraft and a current segment of a flight trajectory; and transmission means ( 8 ) for transmitting such deviations to a guidance calculator ( 39 ), means ( 15 ) for calculating consolidated accuracy and integrity data, being associated with consolidated positions and consolidated speeds of the aircraft, wherein: said device comprises at least one calculator ( 2 ) being on board the aircraft, into which said first and second calculation means ( 6 , 7 ) and said transmission means ( 8 ) are integrated, and which further comprises at least the following integrated means: first reception means ( 3 A, 3 B) for receiving a set of successive segments of a flight trajectory to be followed by the aircraft; memorization means ( 4 ) for recording said segments; and second reception means ( 5 A, 5 B, 5 C) for receiving, repeatedly, respectively from at least three different sources of information ( 36 , 37 , 38 ), current position information for the aircraft; said first calculation means ( 6 ) are formed so as to determine, repeatedly, a consolidated position of the aircraft, from said current position information; said second calculation means ( 7 ) are formed so as to determine, repeatedly, the deviations between said consolidated position and a current segment of the flight trajectory, being recorded in said memorization means ( 4 ); and said device ( 1 ) is replicated on at least three different and independent channels so that all the processings performed by said device ( 1 ) are simultaneously carried out on said at least three channels.