Patents Assigned to Fathom Systems Inc.
  • Patent number: 10018730
    Abstract: A method of determining a position of a GNSS receiver includes: receiving, at the GNSS receiver, information from at least two GNSS satellites and an estimated location area from a non-GNSS positioning application, determining candidate pseudoranges corresponding to candidate correlation peaks determined based on the information received from the at least two GNSS satellites; determining possible positions of the GNSS receiver using the candidate pseudoranges and the estimated location area; determining a best possible position of the GNSS receiver from the possible positions; and setting the best possible position as the position of the GNSS receiver; wherein when multiple candidate correlation peaks corresponding to one of the at least two GNSS satellites are determined, the estimated location area is usable to reduce the number of candidate correlation peaks prior to candidate pseudoranges being determined.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: July 10, 2018
    Assignee: FATHOM SYSTEMS INC.
    Inventors: Mohamed Youssef, Ashkan Izadpanah, Muhammad Haris Afzal, Behnam Aminian
  • Patent number: 9933507
    Abstract: A method of determining locations of radio beacons includes: self-locating and automatically orienting electronic device hubs, determining angles of arrival of radio beacon signals at the electronic device hubs using received signal strength of radio beacons, refining received signal strength based on angle of arrival of the radio beacon signals, determining range using the refined received signal strength and antenna orientation based propagation loss models that compensate for obstacles in a deployment environment and, combining angles of arrival and ranges determined at the electronic device hubs at one of the electronic device hubs and determining locations of radio beacons within a predetermined acceptable accuracy, wherein the electronic hub devices function as receiving devices and radio beacons and radio beacon signals from a subset of the radio beacons are received at more than one electronic hub device.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: April 3, 2018
    Assignee: Fathom Systems Inc.
    Inventor: Muhammad Haris Afzal