Daniel R Lau

US Patent:

20220365223, Nov 17, 2022

Filed:

May 10, 2022

Appl. No.:

17/662822

Inventors:

- Boston MA, US
Daniel Lau - Burlington MA, US
Kenneth Lile Witham - Malden MA, US
Pau Closas - Boston MA, US
Gerald Mycko LaMountain - Malden MA, US

International Classification:

G01S 19/26
G01S 19/03
G01S 19/37

Abstract:

In an embodiment, a method monitors, within a global navigation satellite system (GNSS) limited zone, an intra-zone location of a vehicle having a GNSS receiver, the intra-zone location being within the limited zone. The method determines a simulated intra-zone location of the vehicle based on the intra-zone location monitored to calculate a likely location of the vehicle. The method calculates a global location of the vehicle based on the intra-zone location and the location of the GNSS limited zone within a global network of limited zones. The method broadcasts, from a transmitter within the GNSS limited zone, a GNSS signal representing the global location of the vehicle.