US 12,436,226 B2
Systems and methods for determining vehicle locations using track geometry
Michael Kuhlman, Malden, MA (US); Pedro Teixeira, Cambridge, MA (US); Reza Rezaie, Woodland Hills, CA (US); Joshua Senna, San Mateo, CA (US); and Aaron Whittemore, Millville, MA (US)
Assigned to Humatics Corporation, Waltham, MA (US)
Filed by Humatics Corporation, Waltham, MA (US)
Filed on Mar. 30, 2023, as Appl. No. 18/193,580.
Claims priority of provisional application 63/326,130, filed on Mar. 31, 2022.
Prior Publication US 2023/0314550 A1, Oct. 5, 2023
Int. Cl. G01S 5/02 (2010.01); B61L 25/02 (2006.01); G01S 19/39 (2010.01); G01S 19/46 (2010.01); G01S 19/47 (2010.01); G01S 19/49 (2010.01); G01S 19/50 (2010.01)
CPC G01S 5/02695 (2020.05) [B61L 25/025 (2013.01); B61L 25/026 (2013.01); G01S 5/0264 (2020.05); G01S 5/0294 (2013.01); G01S 19/393 (2019.08); G01S 19/46 (2013.01); G01S 19/47 (2013.01); G01S 19/49 (2013.01); G01S 19/50 (2013.01); B61L 2205/04 (2013.01); G01S 2205/01 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A system for determining a position of a train traveling along a train track, the system comprising:
at least one radio-frequency (RF) antenna configured to transmit and/or receive an RF signal to and/or from at least one anchor node positioned proximate the train track; and
at least one processor configured to:
obtain an arrival time of the RF signal;
access information specifying a geometry of the train track; and
determine the position of the train along the train track using the arrival time and the information specifying the geometry of the train track,
wherein the at least one processor is configured to determine the position of the train along the train track at least in part by determining whether at least one observed position of the train is RF visible to the at least one anchor node using the at least one RF antenna.