Research on Distance Measurement Based on LQI

Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 246)

Abstract

Range-based localization must measure distances between neighboring nodes. Distance measurement based on LQI, featuring low communication overhead and low complexity, is increasingly applied in the range-based localization of the Wireless Sensor Networks. We first analyze the relationship of LQI and signal transmission distance, and then we propose a kind of LQI processing method. The method includes three phases: first, LQI pre-correction before LQI converted to distance; second, the error compensation after LQI converted to distance; third, distance result correction to eliminate biggish error. After using the ZigBee-based hardware platform to test the measurement error, we draw the conclusion that this algorithm has higher accuracy and can achieve better results in distance measurements. The experiments show that measurement error is below 1 m within 10 m.

Keywords

LQI Wireless sensor network Distance measurement 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.School of Computer Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengduChina

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