Near-Ground Path Loss Measurements and Modeling for Wireless Sensor Networks at 2.4 GHz. (14th August 2012)

• Record Type: Journal Article
• Authors: Wang, Daihua; Song, Linli; Kong, Xiangshan; Zhang, Zhijie
• Other Names: Efthymoglou George P. Academic Editor.
• Is Part Of: International journal of distributed sensor networks. (2012)
• Publication Date: 2012-08-14
• Subjects: Sensor networks -- Periodicals; Intelligent agents (Computer software) -- Periodicals; Multisensor data fusion -- Periodicals; 681.2
• DOI: 10.1155/2012/969712
• Languages: English
• ISSNs: 1550-1329

Abstract

Abstract : Near-ground channel characterization is an important issue in most military applications of wireless sensor networks. However, the channel at the ground level lacks characterization. In this paper, we present a path loss model for three near-ground scenarios. The path loss values for each scenario were captured through extensive measurements, and then a least-square linear regression was performed. This indicates that the log-distance-based model is still suitable for path loss modeling in near-ground scenarios, and the prediction accuracy of the two-slope model is superior to that of the one-slope model. The validity of the proposed model was further verified by comparisons between the predicted and measured far-field path losses. Finally, compared to the generic models, the proposed model is more effective for the path loss prediction in near-ground scenarios.