Adaptive navigation for airborne, ground and dismount applications (ANAGDA)

• Main Authors: Thai, Bich M, Fung, Alex C, Aboutalib, Omar
• Format: Patent
• Language: English
• Published: 23.10.2018
• Subjects: AEROPLANES; AIMING; AIRCRAFT; AVIATION; BLASTING; CALCULATING; COMPUTING; CONTROLLING; COSMONAUTICS; COUNTING; EQUIPMENT FOR SHIPPING; GYROSCOPIC INSTRUMENTS; HEATING; HELICOPTERS; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; LIGHTING; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; MECHANICAL ENGINEERING; NAVIGATION; PERFORMING OPERATIONS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; REGULATING; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; SIGNALLING; SURVEYING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES; TESTING; TRAFFIC CONTROL SYSTEMS; TRANSPORTING; WEAPON SIGHTS; WEAPONS

An adaptive navigation system for airborne, ground and dismount applications. The system performs adaptive fusion of all sensed signals, information sources, and databases that may be available on a single or multiple cooperative platforms to provide optimal Positioning, Navigation, and Timing (PNT) state. To reduce error building over time, the system incorporates the concept of geo-registration fusion into the ANAGDA filter. The architecture of the ANAGDA filter consists of user/application configurable functionalities in hierarchical layers. The sensing layer senses the environment and contains the required databases such as surveyed landmarks, and Digital Terrain Elevation Data/Digital Elevation Model (DTED/DEM). The processing layer has a Smart Sensor Resource Manager which is a performance-based sensor/feature selection module. The measurement abstraction layer isolates the filter from hardware specifics. The fusion layer performs the Inertial Measurement Unit (IMU) data integration with sensor measurements, and feature fusion.