1
Harold L Longaker: Differential navigation system for remote mobile users. Oceanonics, Vaden Eickenroht Thompson & Boulware, June 14, 1988: US04751512 (178 worldwide citation)

A differential navigation system applicable to mobile users and covering a wide range geographic area, including remote regions. A reference receiver of known location tracks a navigation information service, computes differential data with respect to that information and communicates the data to a ...


2
David Barlett, Andy Thurman: Positioning systems. u blox, May 16, 2017: US09651665

A method is provided whereby a group of receivers local to one another make GNSS measurements of a number of satellites, from one or multiple different GNSS's, and by combining the measurements of the same satellites made by the different receivers it is possible given sufficient conditions to deter ...


3
POSITIONING SYSTEMS. u blox, February 1, 2018: US20180031709-A1

A method is provided whereby a group of receivers local to one another make GNSS measurements of a number of satellites, from one or multiple different GNSS's, and by combining the measurements of the same satellites made by the different receivers it is possible given sufficient conditions to deter ...