Signal detector employing coherent integration
First Claim
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1. A signal detector comprising:
- a receiver for providing a segment of complex samples of a received signal comprising a desired signal perturbed by noise or pseudo-noise and subject to phase reversals at defined frame boundaries;
a multiplier configured to multiply data derived from the segment with data representative of a hypothesis regarding the signal of interest or a parameter of the signal of interest, and for providing product data representative thereof, and a coherent integrator for coherently integrating the product data over a desired duration responsive to the location of a frame boundary as determined from a source other than the received signal, and deriving therefrom correlation data useful for detecting the signal of interest or a parameter thereof.
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Abstract
A signal detector is provided in which complex samples of a received signal are multiplied by data representative of a hypothesis, and the resulting product data is coherently integrated over a desired duration to provide correlation data representative of the level of correlation between the hypothesis and the signal. In one embodiment, the signal detector is part of a GPS receiver.
184 Citations
22 Claims
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1. A signal detector comprising:
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a receiver for providing a segment of complex samples of a received signal comprising a desired signal perturbed by noise or pseudo-noise and subject to phase reversals at defined frame boundaries;
a multiplier configured to multiply data derived from the segment with data representative of a hypothesis regarding the signal of interest or a parameter of the signal of interest, and for providing product data representative thereof, and a coherent integrator for coherently integrating the product data over a desired duration responsive to the location of a frame boundary as determined from a source other than the received signal, and deriving therefrom correlation data useful for detecting the signal of interest or a parameter thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for detecting a signal comprising:
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receiving a segment of complex samples of a signal comprising a signal of interest perturbed by noise or pseudo-noise and subject to phase reversals at defined frame boundaries;
multiplying data derived from the segment with data representative of a hypothesis regarding the signal of interest or a parameter of the signal of interest to provide product data;
detecting a frame boundary from a source other than the received signal; and
coherently integrating the product data over a desired duration responsive to the location of the frame boundary to provide correlation data useful for detecting a signal of interest or a parameter thereof. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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Specification