A method, system and computer program product for performing correlation in a positioning system
Номер патента: EP4121797A1
Опубликовано: 25-01-2023
Автор(ы): Peter Duffett-Smith, Ramsey Michael Faragher, Robert Mark Crockett
Принадлежит: Focal Point Positioning Ltd
Опубликовано: 25-01-2023
Автор(ы): Peter Duffett-Smith, Ramsey Michael Faragher, Robert Mark Crockett
Принадлежит: Focal Point Positioning Ltd
Реферат: A method performed in a positioning system is provided, The method comprises: (a) receiving, at a receiver, signal data from one or more remote sources; (b) measuring or assuming a movement of the receiver; (c) determining a first direction, wherein signals received at the receiver along the first direction are desired to be enhanced; (d) determining a second direction, wherein signals received at the receiver along the second direction are desired to be suppressed; (e) obtaining first and second phasor sequences indicative of the measured or assumed movement of the receiver in the first and second directions respectively, the first and second phasor sequences each comprising one or more phasors which include an amplitude and/or an angle; (f) generating a third phasor sequence based on a weighted combination of the first and second phasor sequences in accordance with the determined first and second directions; (g) providing a local signal; and (h) providing a correlation signal using the third phasor sequence, wherein providing the correlation signal comprises correlating the local signal with the received signal data, and combining at least one of the local signal, received signal data, and the result of the correlation with the third phasor sequence, such that a signal received along the second direction is suppressed relative to a signal received along the first direction. A corresponding positioning system is also disclosed.
Fast fix using a perfect reference in a satellite-based positioning system
Номер патента: US20180252817A1. Автор: Dickson Wong,Farrokh Farrokhi,Edmund Gregory Lee. Владелец: etherwhere Corp. Дата публикации: 2018-09-06.