Open Access Research Article

A Propagation Environment Modeling in Foliage

Jing Liang1*, Qilian Liang1 and SherwoodW Samn2

Author Affiliations

1 Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX 76019-0016, USA

2 Air Force Research Laboratory/HEX, Brooks City Base, San Antonio, TX 78235, USA

For all author emails, please log on.

EURASIP Journal on Wireless Communications and Networking 2010, 2010:873070  doi:10.1155/2010/873070

Published: 21 March 2010

Abstract

Foliage clutter, which can be very large and mask targets in backscattered signals, is a crucial factor that degrades the performance of target detection, tracking, and recognition. Previous literature has intensively investigated land clutter and sea clutter, whereas foliage clutter is still an open-research area. In this paper, we propose that foliage clutter should be more accurately described by a log-logistic model. On a basis of pragmatic data collected by ultra-wideband (UWB) radars, we analyze two different datasets by means of maximum likelihood (ML) parameter estimation as well as the root mean square error (RMSE) performance. We not only investigate log-logistic model, but also compare it with other popular clutter models, namely, log-normal, Weibull, and Nakagami. It shows that the log-logistic model achieves the smallest standard deviation (STD) error in parameter estimation, as well as the best goodness-of-fit and smallest RMSE for both poor and good foliage clutter signals.