Acta Metallurgica Sinica(English letters) ›› 2014, Vol. 21 ›› Issue (1): 36-42.doi: 10.1016/S1005-8885(14)60266-1

• Wireless • 上一篇    下一篇

Interference of human’s ankle to the channel characteristics of near surface WUSN

LI Li1, WU Wei2, CHEN Jian-ya2, LIU Yun-jie1   

  1. 1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China 2. Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2013-11-07 修回日期:2014-01-02 出版日期:2014-02-28 发布日期:2014-02-28
  • 通讯作者: 李莉 E-mail:lili66@bupt.edu.cn
  • 基金资助:

    This work was supported by the National Natural Science Foundation of China (61001120).

Interference of human’s ankle to the channel characteristics of near surface WUSN

LI Li, WU Wei, CHEN Jian-ya, LIU Yun-jie   

  1. 1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China 2. Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2013-11-07 Revised:2014-01-02 Online:2014-02-28 Published:2014-02-28
  • Contact: Li Li E-mail:lili66@bupt.edu.cn
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (61001120).

摘要:

Because of its potential applications in agriculture, environment monitoring and so on, wireless underground sensor network (WUSN) has been researched more and more extensively in recent years. The main and most important difference of WUSN to terrestrial wireless sensor network (WSN) is the channel characteristics, which determines the design methodology of it. In this paper, the propagation character of electromagnetic (EM) wave in the near surface WUSN is analyzed, as well as the path loss model of it is given. In addition, the influence of human’s ankle to the channel characteristics of near surface WUSN is investigated by electromagnetic theory analysis, simulation and experiment. A novel path loss model of near surface WUSN which takes the interference of human’s ankle into consideration is proposed. It is verified that the existing of human above the WUSN system may cause additional attenuation to the signal of near surface WUSN which propagates as lateral wave along the ground. Moreover, the relation of the attenuation and operating frequency is deduced, which gives a reference to extend the frequency band applied in WUSN.

关键词:

WUSN, lateral wave, human tissue, path loss model, EM wave attenuation

Abstract:

Because of its potential applications in agriculture, environment monitoring and so on, wireless underground sensor network (WUSN) has been researched more and more extensively in recent years. The main and most important difference of WUSN to terrestrial wireless sensor network (WSN) is the channel characteristics, which determines the design methodology of it. In this paper, the propagation character of electromagnetic (EM) wave in the near surface WUSN is analyzed, as well as the path loss model of it is given. In addition, the influence of human’s ankle to the channel characteristics of near surface WUSN is investigated by electromagnetic theory analysis, simulation and experiment. A novel path loss model of near surface WUSN which takes the interference of human’s ankle into consideration is proposed. It is verified that the existing of human above the WUSN system may cause additional attenuation to the signal of near surface WUSN which propagates as lateral wave along the ground. Moreover, the relation of the attenuation and operating frequency is deduced, which gives a reference to extend the frequency band applied in WUSN.

Key words:

WUSN, lateral wave, human tissue, path loss model, EM wave attenuation