Signal detector employing coherent integration
DCFirst Claim
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1. A signal detector comprising:
- a receiver for providing at least a segment of complex samples of a received signal, wherein the received signal comprises a desired signal perturbed by noise or pseudo-noise;
a multiplier configured to multiply data derived from the segment with data representative of a hypothesis regarding at least a parameter of the desired signal, 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 of the desired signal as determined from a source other than the received signal, and deriving therefrom correlation data useful for detecting at least a parameter of the desired signal.
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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.
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13 Claims
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1. A signal detector comprising:
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a receiver for providing at least a segment of complex samples of a received signal, wherein the received signal comprises a desired signal perturbed by noise or pseudo-noise;
a multiplier configured to multiply data derived from the segment with data representative of a hypothesis regarding at least a parameter of the desired signal, 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 of the desired signal as determined from a source other than the received signal, and deriving therefrom correlation data useful for detecting at least a parameter of the desired signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A GPS receiver comprising a signal detector, wherein said signal detector comprises:
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a receiver for providing at least a segment of complex samples of a received signal, wherein the received signal comprises a desired signal perturbed by noise or pseudo-noise;
a multiplier configured to multiply data derived from the segment with data representative of a hypothesis regarding at least a parameter of the desired signal, 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 of the desired signal as determined from a source other than the received signal, and deriving therefrom correlation data useful for detecting at least a parameter of the desired signal.
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Specification