The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 2019
Filed:
Mar. 27, 2015
Honeywell International Inc., Morristown, NJ (US);
James Arthur McDonald, Minneapolis, MN (US);
Tom Jakel, Rapid City, SD (US);
Honeywell International Inc., Morris Plains, NJ (US);
Abstract
Systems and methods for using multi frequency satellite measurements to mitigate spatial decorrelation errors caused by ionosphere delays are provided. In one embodiment, a GBAS comprises: a plurality of GNSS reference receivers that receive signals from GNSS satellites; at least one processing module; at least one aircraft communication device; wherein the processing module determines a TEC along a line of sight of a first observable multi-frequency GNSS satellite to determine a current quality metric of the ionosphere; determines at least one overbounded Vertical Ionosphere Gradient standard deviation sigma-vig (σ) when the current quality metric of the ionosphere meets a threshold; defines one or more valid iono regions at a given finite period in time where at least one σis applicable; and causes the communication device to communicate to an aircraft the σand a list of GNSS single and multi-frequency satellites having pierce points in the valid iono regions.