A signal processing method to improve the accuracy and target resolution of ultrasonic sensing system

Author

Feng, Tong ; Tianzeng, Xu

Author_Institution

Radio Eng. Dept., Southeast Univ., Nanjing, China

Volume

1

fYear

2002

fDate

26-30 Aug. 2002

Firstpage

147

Abstract

Ultrasonic sensing systems have been widely used for detection, recognition and measurement in industrial measurement, robotics, and so on. The narrow bandwidth feature of air medium ultrasonic transducer brings disadvantages of bad ranging precision and distance resolution. In this paper a novel signal processing method is presented to overcome the limit caused by narrow bandwidth of ultrasonic transducer. We employed an equalizer based on transverse FIR filter employed to widen the bandwidth. The weights of this equalizer are trained with the LMS adaptive algorithm. Experimental results show that the precision and target resolution of ultrasonic ranging system is improved.

Keywords

FIR filters; distance measurement; equalisers; robot vision; ultrasonic transducers; LMS adaptive algorithm; accuracy; air medium ultrasonic transducer; bandwidth; distance resolution; equalizer; industrial measurement; precision; ranging precision; robotics; signal processing method; target resolution; transverse FIR filter; ultrasonic sensing system; Adaptive signal processing; Bandwidth; Equalizers; Robot sensing systems; Service robots; Signal processing; Signal processing algorithms; Signal resolution; Ultrasonic transducers; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 2002 6th International Conference on

Print_ISBN

0-7803-7488-6

Type

conf

DOI

10.1109/ICOSP.2002.1181010

Filename

1181010