## A Coal Mine Underground Localization Algorithm Based on the Feature Vector

**Guo Yinjing, Song Xianqi, Yang Lei& Lv Wenhong**

Shandong University of Science and Technology, No. 579, Qianwan'gang Road, Qingdao Economic & Technical Development Zone, Qingdao City, Shandong Province, 266510, PRC

Email:gyjlwh@126.com

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**Abstract **

To enhance the position estimation accuracy of an underground localization system in a coal mine roadway, an algorithm based on the feature vector of received signals is presented in this paper. The algorithm includes three steps: the construction process of the feature vector database and distance database, the vector matching process and the localization process. When a signal vector is received, it only needs to calculate the distance from the received vector to the center vector of each subset, and then compare it with the data in the distance database. After multiple filtering and comparing the source of the strongest signal, the coordinates closest to the received vector can be found. Finally, compared with KNN and WKNN algorithm, the experiment shows that the maximum error of this algorithm is 4 meters, the average error is 1.62 meters. In addition, within 1 meter of localization error, the X-axis localization accuracy is 98%, and the Y-axis localization accuracy is 86%. What is more, the algorithm takes much less time than the first two algorithms. so the algorithm can meet the requirements of coal mine safety system and underground personnel localization system.

**Keywords**: underground localization algorithm; RSSI; feature vector; database construction; FVMA.

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ISSN: 2338-5502