The Boeing Company

Andrew R Hooks

Robert E McLees

Prachya Panyakeow

Paul Thomas Snow

Robert E Mclees

A flight control module for detecting anomalies ILS localizer signals during landing of an aircraft is provided. The flight control module includes a communication interface coupled to a processor. The communication interface is configured to receive an ILS localizer deviation. The processor is configured to compute a plurality of localizer deviations and compare the ILS localizer deviation to an average of the plurality of localizer deviations to detect a low-frequency anomaly in the ILS localizer deviation. The processor is configured to initiate a transition from controlling the aircraft based on the ILS localizer deviation to controlling the aircraft based on a selected one of the plurality of localizer deviations when the low-frequency anomaly is detected.

Flight control system with low-frequency instrument landing system localizer anomaly detection and method of use

A flight control module for detecting anomalies in ILS localizer signals during landing of an aircraft is provided. The flight control module includes a communication interface and a processor coupled thereto. The communication interface is configured to receive inertial data, GPS data, and an ILS localizer deviation for the aircraft. The processor is configured to compute an inertial localizer deviation based on the inertial data and a GPS localizer deviation based on the GPS data. The processor is configured to compare the ILS localizer deviation to an average of the inertial localizer deviation and the GPS localizer deviation to detect a low-frequency anomaly in the ILS localizer deviation. The processor is configured to initiate a transition from controlling the aircraft based on the ILS localizer deviation to controlling the aircraft based on the inertial localizer deviation when the low-frequency anomaly is detected.

Automated systems and methods that utilize high-accuracy landing system data to correct the position of a synthetic runway presentation on a pilot display. This is achieved by first computing the 'synthetic' lateral and vertical rectilinear deviations of the airplane from an ideal beam using the airplane's GPS position and barometric altitude, the runway location and orientation contained in an airborne database, and approach angle information. This synthetic deviation data is then compared to rectilinear deviation data computed by the computer system as received from a ground installation. The computer system is programmed to determine the differences between the ground-based and GPS-based rectilinear deviation data and then compute a corrected position vector using those differences. The position of the synthetic runway symbology on the pilot display is adjusted as a function of the corrected position vector.

Systems and methods for assuring the accuracy of a synthetic runway presentation

Systems and methods for accurately converting angular localizer data into rectilinear localizer data thereby allowing for improved localizer capture performance and stability. The systems and methods utilize information onboard an aircraft regarding the aircraft's current position and the destination runway's position to more accurately determine a distance measurement for converting angular deviations into rectilinear deviations.

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Edmonds, WA, United States of America

Andrew R Hooks