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US 2020/0271791 A1Published application
Tdoa-based positioning system using terrestrial wireless signal sources
AssigneeEtherwhere Corporation
InventorsFarrokh FARROKHI, Dickson WONG
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Abstract
A positioning system is provided in which a client device samples a transmission from any suitable terrestrial wireless source. The resulting samples are correlated with replica samples to determine a position of the client device using time-difference-of-arrival-based calculations.
Claims6
A method, comprising:
- in a first receiver, sampling a transmission from a terrestrial wireless source to provide a series of first samples;
- time-stamping the series of first samples with a time of receipt at the first receiver to provide a time-stamped series of first samples;
- and
- up-loading the time-stamped series of first samples to a server for a determination of a first pseudorange for a second receiver.
1 more element
Dependencies are inferred from the claim text.