MULTI-RANGE OBJECT LOCATION ESTIMATION
2 Assignments
0 Petitions
Accused Products
Abstract
Estimating the impulse response of a channel by providing an initial signal (20); applying a time-shift function to the initial signal (20) to produce a transmit signal (36); transmitting the transmit signal (36); receiving a received signal; calculating an impulse response from the received signal as if the received signal had been produced by the initial signal; and using the impulse response to distinguish between received signals arising from reflections from objects (6) at different ranges.
39 Citations
76 Claims
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1-43. -43. (canceled)
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44. A method of estimating the impulse response of a channel comprising:
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providing an initial signal; applying a time-shift function to said initial signal to produce a transmit signal; transmitting said transmit signal; receiving a received signal; calculating an impulse response from said received signal; and using said impulse response to distinguish between received signals arising from reflections from objects at different ranges. - View Dependent Claims (45, 46, 47, 62, 65, 67, 68, 69)
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48. A method of determining movement of an object of interest comprising:
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providing an initial signal; applying a time-shift function to said initial signal to produce a transmit signal; transmitting said transmit signal; receiving a plurality of received signals including a first received signal arising from reflection of said transmit signal from said object of interest and a second received signal not arising from reflection of said transmit signal from said object of interest and having a different time of flight to the first received signal; using the time-shift function to distinguish between said first and second received signals; and using the first received signal to determine movement of said object. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 63, 66, 70, 71, 72)
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- 61. A method of estimating the impulse response of a channel comprising transmitting a time-shifted signal and distinguishing between the received echoes of different reflections by comparing the time-shifts of the received signals with the transmitted signals.
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73. An apparatus for estimating the impulse response of a channel comprising:
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a signal generator for providing an initial signal; a signal processor for applying a time-shift function to said initial signal to produce a transmit signal; a transmitter adapted to transmit said transmit signal; a receiver adapted to receive a received signal; a processor for calculating an impulse response from said received signal; and a processor for using said impulse response to distinguish between received signals arising from reflections from objects at different ranges.
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74. A computer software product configured, when run on a computer, to estimate the impulse response of a channel comprising:
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logic arranged to control a signal generator to provide an initial signal and apply a time-shift function to said initial signal to produce a transmit signal; logic arranged to control a transmitter to transmit said transmit signal; an input adapted to receive a received signal from a receiver; logic adapted to calculate an impulse response from said received signal; and logic adapted to use said impulse response to distinguish between received signals arising from reflections from objects at different ranges.
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75. An apparatus for determining the movement of an object of interest comprising:
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a signal generator providing an initial signal; a processor for applying a time-shift function to said initial signal to produce a transmit signal; a transmitter arranged to transmit said transmit signal; a receiver arranged to receive a plurality of received signals including a first received signal arising from reflection of said transmit signal from said object of interest and a second received signal not arising from reflection of said transmit signal from said object of interest and having a different time of flight to the first received signal; and a processor arranged to use the time-shift function to distinguish between said first and second received signals and use the first received signal to determine movement of said object of interest.
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76. A computer software product comprising:
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logic arranged to control a signal generator to provide an initial signal and apply a time-shift function to said initial signal to produce a transmit signal; logic arranged to control a transmitter to transmit said transmit signal; an input adapted to receive a plurality of received signals from a receiver including a first received signal arising from reflection of said transmit signal from an object of interest and a second received signal not arising from reflection of said transmit signal from said object of interest and having a different time of flight to the first received signal; and logic adapted to use the time-shift function to distinguish between said first and second received signals and use the first received signal to determine movement of said object of interest.
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Specification