초록 ▼

A relative GPS landing system is provided for approach and landing of aircraft where an accurate site survey of the GPS platform is unavailable. Data containing information on all GPS satellites in view is uplinked from a ground station to an aircraft. A relative solution is derived at the aircraft.

A relative GPS landing system is provided for approach and landing of aircraft where an accurate site survey of the GPS platform is unavailable. Data containing information on all GPS satellites in view is uplinked from a ground station to an aircraft. A relative solution is derived at the aircraft. Based upon the calculated solution, aircraft guidance signals are generated for approach and landing of the aircraft at a desired point.

대표청구항 ▼

A navigation system for an aircraft, comprising: a ground station comprising: a first navigation receiver coupled to an antenna to receive satellite navigation signals transmitted from a plurality of satellites, said first navigation receiver generating pseudorange data corresponding to each of said

A navigation system for an aircraft, comprising: a ground station comprising: a first navigation receiver coupled to an antenna to receive satellite navigation signals transmitted from a plurality of satellites, said first navigation receiver generating pseudorange data corresponding to each of said plurality of satellites; a ground station processor for processing the pseudorange data and offset data identifying the location of the ground station relative to an aircraft runway touchdown position, said processor generating a ground station data message; a data input interface for inputting the offset data to the ground station processor; an encoder for encoding the ground station data message; a datalink transmitter coupled to said encoder and to a datalink antenna for transmitting the encoded ground station data message over a datalink; and an airborne station aboard the aircraft comprising: a second navigation receiver coupled to an antenna to receive satellite navigation signals transmitted from a plurality of satellites; a datalink receiver coupled to an antenna for receiving the encoded ground station data message over the datalink; a decoder for decoding the encoded ground station data message received via the datalink; and an airborne station processor coupled to said decoder for calculating a relative position of the ground station using the decoded ground station data message and a relative position of the aircraft using the satellite navigation signals received by the second navigation receiver, said airborne station processor generating a relative position vector corresponding to the position of the aircraft relative to a reference point, said airborne station processor generating the relative position vector from the offset data and from the relative positions of the ground station and the aircraft, and said airborne station processor computing guidance information from the relative position vector.