System and method for detection and tracking of targets
First Claim
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1. A signal processing system comprising:
- a signal receiver;
a first processor operable to compute one or more projections of the magnitude squared auto-ambiguity function of a received modulated signal; and
a second processor operable to determine a modulation type of the received signal based on the computed one or more projections.
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Abstract
System and method for detection and tracking of targets, which in a preferred embodiment is based on the use of fractional Fourier transformation of time-domain signals to compute projections of the auto and cross ambiguity functions along arbitrary line segments. The efficient computational algorithms of the preferred embodiment are used to detect the position and estimate the velocity of signals, such as those encountered by active or passive sensor systems. Various applications of the proposed algorithm in the analysis of time-frequency domain signals are also disclosed.
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Citations
20 Claims
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1. A signal processing system comprising:
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a signal receiver; a first processor operable to compute one or more projections of the magnitude squared auto-ambiguity function of a received modulated signal; and a second processor operable to determine a modulation type of the received signal based on the computed one or more projections. - View Dependent Claims (2, 3)
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4. A computer program product comprising:
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a medium with instructions stored thereon that cause a computer system to (a) receive a signal; (b) compute one or more projections of the magnitude squared auto-ambiguity function of the received signals; and (c) determine a modulation type of the received signal based on the computed projections. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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11. A signal processing method comprising the steps of:
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receiving a modulated signal; computing one or more projections of the magnitude squared auto-ambiguity function of the received signal; and determining a modulation type of the received signal based on the one or more computed projections. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification