초록 ▼

A computerized flight inspection system is disclosed. The system of the present invention may be utilized to generate an accurate reference location with respect to an airport runway for an aircraft having an inertial navigation system. A selected geometric pattern having a highly unambiguous autoco

A computerized flight inspection system is disclosed. The system of the present invention may be utilized to generate an accurate reference location with respect to an airport runway for an aircraft having an inertial navigation system. A selected geometric pattern having a highly unambiguous autocorrelation function is placed on at least one end of the runway. A video line scanning camera mounted to the aircraft is then utilized to scan the geometric pattern in a line generally perpendicular to the line of flight. The output of the video line scanning camera is then correlated with a stored reference pattern to generate a signal indicative of the detection of the geometric pattern on the runway. A laser altimeter is mounted to the aircraft and utilized to generate an accurate signal indicative of the aircraft altitude with respect to the runway pattern. The outputs of the correlation circuit and the laser altimeter are then utilized to correct data from the inertial navigation system.

대표청구항 ▼

A computerized flight inspection system for providing an accurate reference location with respect to a runway for an aircraft having an inertial navigation system, said flight inspection system comprising: selected indicia disposed on at least one end of an airport runway; video scanning means dispo

A computerized flight inspection system for providing an accurate reference location with respect to a runway for an aircraft having an inertial navigation system, said flight inspection system comprising: selected indicia disposed on at least one end of an airport runway; video scanning means disposed within said aircraft for scanning said selected indicia in a line generally perpendicular to said aircraft\s line of flight and for generating an output indicative of the scanned video pattern; memory means for storing a reference video pattern; correlator means coupled to said video scanning means and said memory means for correlating said scanned video pattern and said reference video pattern; altimeter means for measuring the altitude of said aircraft and for generating a signal indicative thereof; and processor means coupled to said correlator means and said altimeter means for generating correction data for said inertial navigation system in response to said correlation and said altitude measurement.