Calculating distance by wireless ethernet signal strength for global positioning method

Seung-Yong Kim; Jeehong Kim; Chang-goo Lee

doi:10.1117/12.664376

20 February 2006 Calculating distance by wireless ethernet signal strength for global positioning method

Seung-Yong Kim, Jeehong Kim, Chang-goo Lee

Proceedings Volume 6041, ICMIT 2005: Information Systems and Signal Processing; 60412H (2006) https://doi.org/10.1117/12.664376
Event: ICMIT 2005: Merchatronics, MEMS, and Smart Materials, 2005, Chongqing, China

Abstract

This paper investigated mobile robot localization by using wireless Ethernet for global localization and INS for relative localization. For relative localization, the low-cost INS features self-contained was adopted. Low-cost MEMS-based INS has a short-period response and acceptable performance. Generally, variety sensor was used for mobile robot localization. In spite of precise modeling of the sensor, it leads inevitably to the accumulation of errors. The IEEE802.11b wireless Ethernet standard has been deployed in office building, museums, hospitals, shopping centers and other indoor environments. Many mobile robots already make use of wireless networking for communication. So location sensing with wireless Ethernet might be very useful for a low-cost robot. This research used wireless Ethernet card for compensation the accumulation of errors. So the mobile robot can use that for global localization through the installed many IEEE802.11b wireless Ethernets in indoor environments. The chief difficulty in localization with wireless Ethernet is predicting signal strength. As a sensor, RF signal strength measured indoors is non-linear with distance. So, there made the profiles of signal strength for points and used that. We wrote using function between signal strength profile and distance from the wireless Ethernet point.

Citation Download Citation

Seung-Yong Kim, Jeehong Kim, and Chang-goo Lee "Calculating distance by wireless ethernet signal strength for global positioning method", Proc. SPIE 6041, ICMIT 2005: Information Systems and Signal Processing, 60412H (20 February 2006); https://doi.org/10.1117/12.664376

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