A Novel Radio Propagation Radiation Model for Location of the Capsule in GI Tract
In this paper, we discuss the influence of the antenna orientation radiation pattern in localization algorithm based on Received Signal Strength Indicator (RSSI). We also improve the empirical model of signal propagation by building the path loss function of the human gastro-intestine (GI) tract. The novel model includes information of both the distance and azimuth angle variables. The numerical electromagnetic analysis with the finite-difference time-domain (FDTD) is applied to model the vivo radio propagation channels by using a dipole antenna suitable for the model related to the human body. The proposed propagation model is compared with empirical model, and the simulation results show that the compensated model is more accurate by calculating the azimuth radiation attenuation. It demonstrates that the often overlooked antenna orientation has the dominant effect on the signal strength sensitivity.
Lujia Wang Chao Hu Longqiang Tian Mao Li Max. Q.-H
CAS/CUHK Shenzhen Institute of Advanced Integration,Key Lab for Biomedical Information & Health Eng. Department of Electronic Engineering The Chinese University of Hong Kong
国际会议
2009 IEEE International Conference on Robotics and Biomimetics(2009 IEEE 机器人与仿生技术国际会议 ROBIO 2009)
桂林
英文
2332-2337
2009-12-19（万方平台首次上网日期，不代表论文的发表时间）