US 11,789,110 B2
Fault detection, exclusion, isolation, and re-configuration of navigation sensors using an abstraction layer
Mark A. Ahlbrecht, Minneapolis, MN (US); Mats Anders Brenner, Plymouth, MN (US); Bruce G Johnson, Shoreview, MN (US); Milos Sotak, Kosice-Saca (SK); Zdenek Kana, Dubnany (CZ); and James Arthur McDonald, New Brighton, MN (US)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Aug. 24, 2021, as Appl. No. 17/410,886.
Claims priority of provisional application 63/074,247, filed on Sep. 3, 2020.
Prior Publication US 2022/0065980 A1, Mar. 3, 2022
Int. Cl. G01S 3/02 (2006.01); G01S 5/02 (2010.01); G01C 21/16 (2006.01)
CPC G01S 5/0263 (2013.01) [G01S 5/0264 (2020.05); G01C 21/165 (2013.01); G01S 5/0294 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving, by a fusion function, redundant navigation sensor measurements from a plurality of sensors, wherein redundancy of the redundant navigation sensor measurements is achieved based on an independence between measurements from different physical sensor units;
calculating, by the fusion function, fused navigation parameters based on a fusion of the redundant navigation sensor measurements; and
providing, by the fusion function, fused navigation parameters to an abstraction layer;
calculating, by the abstraction layer, an estimated state, wherein the estimated state comprises the fused navigation parameters and safety assessment information for the fused navigation parameters, wherein the safety assessment information describes the accuracy of the estimated state;
providing, by the abstraction layer, the estimated state to a plurality of user systems.