Simulated Radar Range Profiles of a Simple Room as Computed by FDTD and Xpatch

Abstract : This technical report presents numerical simulations of the ultra-wideband (UWB) radar return from a simple room with a human inside, with application to sensing through the wall (STTW) radar scenarios. We use the Finite Difference Time Domain (FDTD) and Xpatch modeling techniques to compute the range profiles of the room at specific incidence and observation angles. Our goal is to analyze the electromagnetic phenomenology in operating an UWB radar for STTW applications. At the same time, we are interested in understanding issues specific to these computational techniques as applied to this type of problems, as well as validating Xpatch as an accurate tool for modeling general STTW radar scenarios.

[1]  C. Balanis Advanced Engineering Electromagnetics , 1989 .

[2]  Alan V. Oppenheim,et al.  Discrete-Time Signal Pro-cessing , 1989 .

[3]  R. Luebbers,et al.  The Finite Difference Time Domain Method for Electromagnetics , 1993 .

[4]  Ingo Wolff,et al.  FDTD simulations of indoor propagation , 1994, Proceedings of IEEE Vehicular Technology Conference (VTC).

[5]  Theodore S. Rappaport,et al.  Site-specific propagation prediction for wireless in-building personal communication system design , 1994 .

[6]  Allen Taflove,et al.  Computational Electrodynamics the Finite-Difference Time-Domain Method , 1995 .

[7]  Chang-Fa Yang,et al.  A free space approach for extracting the equivalent dielectric constants of the walls in buildings , 1996, IEEE Antennas and Propagation Society International Symposium. 1996 Digest.

[8]  Chang-Fa Yang,et al.  A ray tracing method for modeling indoor wave propagation and penetration , 1996, IEEE Antennas and Propagation Society International Symposium. 1996 Digest.

[9]  N. A. Talcott,et al.  A review of bistatic k-space imaging for electromagnetic prediction codes for scattering and antennas , 1997 .

[10]  William C. Stone,et al.  Electromagnetic Signal Attenuation in Construction Materials , 1997 .

[11]  J. Tarng,et al.  Three-dimensional modeling of 900-MHz and 2.44-GHz radio propagation in corridors , 1997 .

[12]  H. R. Anderson,et al.  A comparative study of ray tracing and FDTD for indoor propagation modeling , 1998, VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151).

[13]  Ying Wang,et al.  A hybrid technique based on combining ray tracing and FDTD methods for site-specific modeling of indoor radio wave propagation , 2000 .

[14]  L. Talbi,et al.  Simulation of indoor UHF propagation using numerical technique , 2001, Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555).

[15]  Mark A. Barnes,et al.  Ultrawideband through-wall radar for detecting the motion of people in real time , 2002, SPIE Defense + Commercial Sensing.

[16]  D. Pena,et al.  Measurement and modeling of propagation losses in brick and concrete walls for the 900-MHz band , 2003 .

[17]  R. de Oliveira,et al.  Electromagnetic scattering analysis in indoor and outdoor environments by applying FDTD method , 2003, Proceedings of the 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference - IMOC 2003. (Cat. No.03TH8678).

[18]  John F. Shaeffer,et al.  Radar Cross Section , 2004 .

[19]  M. Reynaud,et al.  Modeling indoor propagation using an indirect hybrid method combining the UTD and the FDTD methods , 2005, 7th European Conference on Wireless Technology, 2004..

[20]  Y. Hao,et al.  Two novel FDTD based UWB indoor propagation models , 2005, 2005 IEEE International Conference on Ultra-Wideband.

[21]  A.E. Fathy,et al.  See-through-wall imaging using ultra wideband short-pulse radar system , 2005, 2005 IEEE Antennas and Propagation Society International Symposium.

[22]  Hugh Burchett,et al.  Advances in Through Wall Radar for Search, Rescue and Security Applications , 2006 .

[23]  C. Le,et al.  Computer Models of the Human Body Signature for Sensing Through the Wall Radar Applications , 2007 .

[24]  W.A. Chamma FDTD Modelling of a Realistic Room for Through-the-Wall Radar Applications , 2007, 2007 Workshop on Computational Electromagnetics in Time-Domain.

[25]  Walid A. Chamma FDTD modelling of a realistic room for through-the-wall radar applications , 2009 .