Computer Models of the Human Body Signature for Sensing Through the Wall Radar Applications

Abstract : This technical report presents numerical simulations of the human body radar signature, with application to sensing through the wall (STTW) scenarios. We utilize the Finite Difference Time Domain (FDTD) modeling technique to compute the electromagnetic scattering from realistic human body models. We analyze the radar cross section (RCS) of the human body in different configurations as a function of aspect angle, frequency, and polarization, drawing important conclusions in terms of the magnitude, variability, and statistics of the human radar signature. We also use the modeling data in order to simulate the operation of a low frequency, ultra-wideband (UWB) synthetic aperture radar (SAR), by creating SAR images of the human body in various configurations. The results obtained in this study can be used as guidance by radar system designers in order to optimize performance in the context of a STTW scenario.

[1]  K. Yee.  Numerical solution of initial boundary value problems involving maxwell's equations in isotropic media , 1966 .

[2]  M. Skolnik,et al.  Introduction to Radar Systems , 2021, Advances in Adaptive Radar Detection and Range Estimation.

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

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

[5]  Martin Tygel,et al.  Analysis of the Rayleigh pulse , 1989 .

[6]  J. Toftgard,et al.  Effects on Portable Antennas by the Presence of a Person , 1993 .

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

[8]  Marc A. Ressler,et al.  Evolution of the Army Research Laboratory Ultra-Wideband Test Bed , 1995 .

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

[10]  C. Gabriel.  Compilation of the Dielectric Properties of Body Tissues at RF and Microwave Frequencies. , 1996 .

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

[12]  Cynthia Furse,et al.  Computations of SAR distributions for two anatomically-based models of the human head using CAD files of commercial telephones and the parallelized FDTD code , 1997 .

[13]  Cynthia Furse,et al.  Comparison of FDTD computed and measured radiation patterns of commercial mobile telephones in presence of the human head , 1998 .

[14]  L. Carin,et al.  Ultra-wide-band synthetic-aperture radar for mine-field detection , 1999 .

[15]  Mehrdad Soumekh,et al.  Synthetic Aperture Radar Signal Processing with MATLAB Algorithms , 1999 .

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

[17]  M. B. Kanevsky,et al.  Synthetic aperture radar , 2009 .