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

Abstract:

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.

• Periodical: Advanced Materials Research (Volumes 268-270)
• Pages: 1850-1855
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.268-270.1850
• Online since: July 2011
• Authors: Zhen Jing Yao, Tao Gao, Hong Rui Ma, Chun Sheng Guo
• Keywords: BASK, Genetic Algorithm (GA), Multi-Target Location, Rescue Robot, Ultrasonic

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