Optimized Pseudorandom BASK Emission Sequences for Ultrasonic Multi-Life Location System

Abstract:

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This paper addresses the performance of pseudorandom Binary Amplitude Shift Keying (BASK) emission sequences for an ultrasonic multi-life location system in rescue robot. To improve the performance of multi-life location system, the BASK modulation were used to construct the spread spectrum emission sequences for ultrasonic sensors. Correlation technique in the receiving circuit was used to de-spread. Good correlation characteristics, i.e., sharp autocorrelation and flat cross-correlation, can help eliminate crosstalk between multichannel ultrasonic sensors. To improve the echo signal correlation effect, genetic algorithm was applied to optimize pseudorandom m sequences. In simulated post-earthquake environment, experimental verification of ultrasonic multi-life location system consisting of eight-channel SensComp 600 series electrostatic sensors with optimized BASK emission sequences was carried out. The experimental results demonstrate that the ultrasonic multi-life location system with the proposed method can realize multi-life location simultaneously.

Info:

Periodical:

Advanced Materials Research (Volumes 268-270)

Edited by:

Feng Xiong

Pages:

1850-1855

DOI:

10.4028/www.scientific.net/AMR.268-270.1850

Citation:

Z. J. Yao et al., "Optimized Pseudorandom BASK Emission Sequences for Ultrasonic Multi-Life Location System", Advanced Materials Research, Vols. 268-270, pp. 1850-1855, 2011

Online since:

July 2011

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Price:

$35.00

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