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:
Mar. 29, 2022
Filed:
Jul. 13, 2021
Spirent Communications Plc, Crawley, GB;
Jeremy Charles Bennington, Greenwood, IN (US);
Raphael Grech, Torquay, GB;
Dennis Berres, Farmington Hills, MI (US);
Rafal Zbikowski, Paignton, GB;
Colin Richard Ford, Carmarthen, GB;
Richard West, Paignton, GB;
Paul Hansen, Cambridge, GB;
Arthur Edward Neeves, Saint Augustine, FL (US);
Esther Anyaegbu, Northampton, GB;
Adam Gleave, Plymouth, GB;
Ronald Toh Ming Wong, Paignton, GB;
Spirent Communications, Plc, Crawley, GB;
Abstract
Disclosed is a method of providing dilution of precision (DOP) forecasts for GNSS navigation and optionally degree of confidence, for routing of vehicles or alerting humans in vehicles: accessing a 3D map of an area including structure solids and generating cuboids in spaces not contained in the structure solids, and iteratively over time increments, calculating GNSS satellites visible from the cuboids using the 3D map and, using at least the calculated visibility, determining a DOP forecast for GNSS signals observable in the cuboids at the time increments. The disclosed method also includes compressing the calculated DOP forecast spatially and temporally, and distributing the compressed DOP forecast via a content delivery network (CDN), responsive to queries from requestors to an API of the CDN, whereby the requestors' systems can take into account the DOP forecast for routing the vehicles or alerting the humans in the vehicles to a predicted navigation impairment.