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Beamforming using fractional time delay in digitally oversampled sensor systems, apparatuses, and methods
Beamforming using fractional time delay in digitally oversampled sensor systems, apparatuses, and methods
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机译:在数字过采样传感器系统,设备和方法中使用分数时间延迟进行波束成形
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摘要
Systems and methods are described to time delay a signal output from an analog-to-digital converter (ADC). The ADC includes a digital sensor responsive to an analog field quantity. The digital sensor is configured to output an oversampled digital output signal at a sampling clock frequency. A time delay element is configured to receive as an input, the oversampled digital output signal and to output a time delayed oversampled digital output signal. A filter is configured to receive as an input the delayed oversampled digital output signal. The filter low pass filters and decimates to a lower sample rate the delayed oversampled digital output signal. An output includes a low pass filtered decimated delayed digital output signal, where the lower sample rate is less than the sampling clock frequency.
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