System and method for determining vehicle position by triangulation
AssigneeTransportation IP Holdings, LLC
InventorsAndrew Ryan Staats, Stuart John Barr
Life of this patent
Estimating the term…
Abstract
A system and method for determining the location of a vehicle when GNSS signals are not available use triangulation between one or two radio transmitters and, respectively, two or one radio receivers mounted on the vehicle. The distance between each radio transmitter and/or each radio receiver can be determined according a phase difference between received radio signals. The radio signals can have the geographical location of the radio transmitter included therein. Utilizing the demodulated geographical location of each radio transmitter and the distance between the radio transmitter and each radio receiver, triangulation can be used to determine the geographical location of the vehicle.
Claims20
A system, comprising:
- a transmitter configured to transmit a first signal having a first location of the transmitter;
- first and second receivers each configured to receive the first signal, the first receiver and the second receiver receiving the first signal with a phase difference due to the first receiver and the second receiver being at different second and third locations;
- and
- a controller configured to determine the phase difference between the first signal as received by each of the first receiver and the second receiver, the controller configured to determine a first distance between the transmitter and the first receiver and a second distance between the transmitter and the second, the controller configured to determine a vehicle location based on the first location of the first transmitter, the first distance, the second distance, and a known distance between the first receiver and the second receiver.
A system, comprising:
- a first transmitter configured to transmit a first signal having a first location of the first transmitter;
- a second transmitter configured to transmit a second signal having a second location of the second transmitter;
- a receiver configured to receive the first signal and the second signal;
- and
- a controller configured to determine a phase difference between the first signal and the second signal as received by the receiver, the controller configured to determine a first distance between the first transmitter and the receiver and a second distance between the second transmitter and the receiver, the controller configured to determine a vehicle location based on the first location of the first transmitter, the second location of the second transmitter, the first distance, the second distance, and a distance between the first receiver and the second receiver.
A system, comprising:
- a receiver configured to be onboard a vehicle, the receiver configured to receive signals from transmitters disposed at different transmitter locations, each of the signals including the transmitter location of the transmitter that sent the signal;
- and
- a controller configured to calculate a phase difference between the signals, the controller configured to calculate distances between the receiver and each of the transmitters based on the phase difference that is calculated, the controller configured to calculate a receiver location of the receiver based on the distances that are calculated, the transmitter locations, and a distance between a first transmitter and a second transmitter of the transmitters,
- the controller configured to change or control movement of the vehicle based on the receiver location that is calculated.
Dependencies are inferred from the claim text.