US 11,789,161 B2
Accuracy of a GNSS receiver that has a non-directional antenna
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); and Ronald Toh Ming Wong, Paignton (GB)
Assigned to Spirent Communications PLC, Crawley (GB)
Filed by Spirent Communications PLC, Crawley (GB)
Filed on Jul. 13, 2021, as Appl. No. 17/374,882.
Claims priority of provisional application 63/051,849, filed on Jul. 14, 2020.
Claims priority of provisional application 63/161,386, filed on Mar. 15, 2021.
Prior Publication US 2022/0018971 A1, Jan. 20, 2022
Int. Cl. G01S 19/28 (2010.01); G01S 19/22 (2010.01); G01S 19/36 (2010.01); H04L 67/12 (2022.01)
CPC G01S 19/28 (2013.01) [G01S 19/22 (2013.01); G01S 19/36 (2013.01); H04L 67/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of improving accuracy of a GNSS receiver that has a non-directional antenna, including:
sending a request for predictive data, the predictive data including first data specifying predicted line-of-sight visibility from the receiver to individual satellites for an area that includes the receiver to a content delivery network (abbreviated CDN) that caches the predictive data;
responsive to the request, receiving the predictive data; and
extracting from the first data a prediction for a present or future location of the receiver and using the extracted prediction data for satellite selection, for choosing some and ignoring other individual satellites.