Cross-Correlation by Single-bit Signal Processing for Ultrasonic Distance Measurement
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概要
- 論文の詳細を見る
Ultrasonic distance measurement using the pulse-echo method is based on the determination of the time of flight of ultrasonic waves. The pulse-compression technique, in which the cross-correlation function of a detected ultrasonic wave and a transmitted ultrasonic wave is obtained, is the conventional method used for improving the resolution of distance measurement. However, the calculation of a cross-correlation operation requires high-cost digital signal processing. This paper presents a new method of sensor signal processing within the pulse-compression technique using a delta-sigma modulated single-bit digital signal. The proposed sensor signal processing method consists of a cross-correlation operation employing single-bit signal processing and a smoothing operation involving a moving average filter. The proposed method reduces the calculation cost of the digital signal processing of the pulse-compression technique.
- （社）電子情報通信学会の論文
- 2008-04-01
著者
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Kurosawa Minoru
Department Of Information Processing Tokyo Institute Of Technology
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Katagiri Takashi
Sutekina Inc.
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HIRATA Shinnosuke
Department of Information Processing, Tokyo Institute of Technology
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Hirata Shinnosuke
Department Of Information Processing Interdisciplinary Graduate School Of Science And Engineering To
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Kurosawa Minoru
Department Of Advanced Applied Electronics Tokyo Institute Of Technology
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