An evaluation approach of radio map quality for fingerprint positioning system

Abstract

Fingerprint positioning is considered to be one of the most promising indoor positioning technique. The most significant technological bottleneck of fingerprint positioning technology is the high labor cost of the radio map establishing process. Many radio map fast establishing algorithms were proposed to solve this problem. There is no evaluation norm for these algorithms but positioning accuracy, which is supposed to be unreliable. This paper presents a radio map establishing algorithm evaluation criterion. To avoid the influence of other factors, the proposed evaluation criterion focuses on the quality of the radio map only. The Euclidean distance between radio maps was calculated to indicate the radio map quality. Simulation results show that the evaluation criterion can effectively measure the quality of radio maps. Some typical radio map establishing algorithms are also compared in this paper based on the proposed evaluation criterion.