Signal processing apparatus and method
First Claim
1. A method of processing signals received from an array of sensors, the method comprising:
- sampling and digitally converting the received signals;
processing the digitally converted signals to provide an output signal, the processing including filtering the signals using a first adaptive filter that enhances a target signal of the digitally converted signals and a second adaptive filter that suppresses an unwanted signal of the digitally converted signals, and processing the filtered signals in a frequency domain to further suppress the unwanted signal;
processing the digitally converted signals to determine a direction of arrival of the target signal, the processing including filtering the signals using a third adaptive filter; and
controlling the first adaptive filter to perform only when the target signal is present.
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Abstract
A method of processing signals received from an array of sensors includes sampling and digitally converting the received signals. The digitally converted signals are processed to provide an output signal, the processing including filtering the signals using a first adaptive filter that enhances a target signal of the digitally converted signals and a second adaptive filter that suppresses an unwanted signal of the digitally converted signals, and processing the filtered signals in a frequency domain to further suppress the unwanted signal. The digitally converted signals are processed to determine a direction of arrival of the target signal, the processing including filtering the signals using a third adaptive filter.
44 Citations
16 Claims
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1. A method of processing signals received from an array of sensors, the method comprising:
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sampling and digitally converting the received signals; processing the digitally converted signals to provide an output signal, the processing including filtering the signals using a first adaptive filter that enhances a target signal of the digitally converted signals and a second adaptive filter that suppresses an unwanted signal of the digitally converted signals, and processing the filtered signals in a frequency domain to further suppress the unwanted signal; processing the digitally converted signals to determine a direction of arrival of the target signal, the processing including filtering the signals using a third adaptive filter; and controlling the first adaptive filter to perform only when the target signal is present. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification