公开(公告)号：US20180259341A1

公开(公告)日：2018-09-13

申请号：US15453200

申请日：2017-03-08

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： OMAR ABOUTALIB ,  BICH M. THAI ,  ALEX C. FUNG

IPC: G01C21/16 ,  G08G5/02 ,  B64C39/02 ,  G01C21/00 ,  B63B49/00 ,  G08G5/00 ,  F41G7/00 ,  G06T7/246 ,  G06T7/579 ,  G06T7/33 ,  G06T7/38 ,  G06T7/73

CPC classification number: G01C21/165 ,  B63B49/00 ,  B63B2213/02 ,  B64C39/024 ,  F41G7/008 ,  G01C21/005 ,  G06T7/248 ,  G06T7/337 ,  G06T7/38 ,  G06T7/579 ,  G06T7/74 ,  G08G5/0047 ,  G08G5/025

Abstract: 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.