Cross-correlation by single-bit signal processing for ultrasonic distance measurement

被引：28

作者：

Hirata, Shinnosuke ^{[1
]}

Kurosawa, Minoru Kuribayashi ^{[1
]}

Katagiri, Takashi ^{[2
]}

机构：

[1] Tokyo Inst Technol, Dept Informat Proc, Yokohama, Kanagawa 2268502, Japan

[2] Sutekina Inc, Komagane 3994117, Japan

来源：

IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | 2008年 / E91A卷 / 04期

关键词：

ultrasonic distance measurement; pulse-compression technique; delta-sigma modulation; cross-correlation; moving average filter;

D O I：

10.1093/ietfec/e91-a.4.1031

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

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.

引用

页码：1031 / 1037

页数：7

共 10 条

[1]

Evans E. J., 1956, ACUSTICA, V6, P238

[2]

Fujisaka H, 2002, IEICE T FUND ELECTR, VE85A, P853

[3]

FUKUI T, 1996, P 4 INT C CONTR AUT

[4] Sophisticated mobile robot sonar sensing with pseudo-random codes [J].

Jörg, KW ;

Berg, M .

ROBOTICS AND AUTONOMOUS SYSTEMS, 1998, 25 (3-4) :241-251

[5]

Klahold J, 2002, 2002 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS I-IV, PROCEEDINGS, P323, DOI 10.1109/ROBOT.2002.1013381

[6]

MALOBERTI F, 1992, P IEEE INT S CIRC SY, V6, P2645

[7] DIGITAL TIME-OF-FLIGHT MEASUREMENT FOR ULTRASONIC SENSORS [J].

MARIOLI, D ;

NARDUZZI, C ;

OFFELLI, C ;

PETRI, D ;

SARDINI, E ;

TARONI, A .

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 1992, 41 (01) :93-97

[8]

NAGASHIMA Y, 1992, P IEEE RSJ INT C INT, V2, P805

[9]

Norsworthy S.R., 1996, DELTA SIGMA DATA CON

[10]

ORINO Y, 2003, 16 WORKSH CIRC SYST, P117

← 1 →