US 12,066,558 B2
Method for geolocating a receiver
Bruno Sangle-Ferriere, Paris (FR)
Assigned to MARBEUF CONSEIL ET RECHERCHE, Paris (FR)
Filed by MARBEUF CONSEIL ET RECHERCHE, Paris (FR)
Filed on Feb. 21, 2022, as Appl. No. 17/676,498.
Claims priority of application No. 2101708 (FR), filed on Feb. 22, 2021.
Prior Publication US 2022/0268874 A1, Aug. 25, 2022
Int. Cl. G01S 5/02 (2010.01); G01S 5/12 (2006.01); G01S 5/14 (2006.01); G06Q 20/40 (2012.01)
CPC G01S 5/0226 (2013.01) [G01S 5/12 (2013.01); G01S 5/14 (2013.01); G06Q 20/4015 (2020.05); G01S 2205/02 (2020.05)] 30 Claims
OG exemplary drawing
 
1. A method for geolocating a receiver by measuring times of reception, by the receiver, of a plurality of geolocation signals originating from a plurality of emitters, the geolocation signals are emitted on multiple different wavelengths, at least one geolocation signal having a frequency less than 1 GHz,
the receiver not having a clock synchronized with the emitters, the method comprising the steps of:
determining, for multiple pairs of emitters M1 and M2, a slice delimited by two hyperbolic surfaces revolving about the straight line linking the emitters M1 and M2, the two hyperbolas are defined by the position of the emitters M1 and M2 and a difference in length between the points of the hyperbolas at the two positions of the emitters M1 and M2,
determining the position of the receiver by intersecting the slices.