초록 ▼

The invention comprises of methods and apparatus to estimate the position and velocity of a Mobile Receiver (MR) using either the Time Of Arrival (TOA) of signals received by the MR, their Phase Of Arrival (POA), their Strength Of Arrival (SOA), their Frequency Of Arrival (FOA), or a combination the

The invention comprises of methods and apparatus to estimate the position and velocity of a Mobile Receiver (MR) using either the Time Of Arrival (TOA) of signals received by the MR, their Phase Of Arrival (POA), their Strength Of Arrival (SOA), their Frequency Of Arrival (FOA), or a combination thereof, with respect to a reference produced by a Reference Receiver (RR) of known location. In order to solve for the coordinates of the MR, the invention uses either hyperbolic multilateration based on Time Difference Of Arrival (TDOA), or linear multiangulation based on Phase Difference Of Arrival (PDOA), or both. In order to solve for the velocity of the MR, the patent uses FOA based on Frequency Difference Of Arrival (FDOA). An important contribution of this invention is the way the MR receives, processes and combines available signals for location purposes. Another important contribution of this invention is the way the RR receives, processes and combines available signals for reference purposes. Yet another important contribution of the invention is the application of Super-Resolution (SR) techniques at both the MR and the RR to increase the resolution of the estimated TOAs, POAs, SOAs, or FOAs.

대표청구항 ▼

[We claim:] [1.]receiving a plurality of signals from a plurality of Base Station Transmitters (BSTs) by the MR;performing a nonlinear operation on the plurality of received signals at the MR in order to generate at least one tone for each received signal;extracting the at least one tone from each r

[We claim:] [1.]receiving a plurality of signals from a plurality of Base Station Transmitters (BSTs) by the MR;performing a nonlinear operation on the plurality of received signals at the MR in order to generate at least one tone for each received signal;extracting the at least one tone from each received signal by performing a Fourier Transform (FT) on segments of the received signal, windowing desired frequency domain bands for each segment; and performing an inverse Fourier Transform (IFT) on the windowed desired frequency domain bands; andlocating the Mobile Receiver using the extracted tones.