Chen Jie, Fang Guang-you, Li Fang. The Application of Time Domain Beamforming to Ultra-wideband Through-wall Imaging Radar[J]. Journal of Electronics & Information Technology, 2008, 30(6): 1341-1344. doi: 10.3724/SP.J.1146.2006.01850
Citation:
Chen Jie, Fang Guang-you, Li Fang. The Application of Time Domain Beamforming to Ultra-wideband Through-wall Imaging Radar[J]. Journal of Electronics & Information Technology, 2008, 30(6): 1341-1344. doi: 10.3724/SP.J.1146.2006.01850
Chen Jie, Fang Guang-you, Li Fang. The Application of Time Domain Beamforming to Ultra-wideband Through-wall Imaging Radar[J]. Journal of Electronics & Information Technology, 2008, 30(6): 1341-1344. doi: 10.3724/SP.J.1146.2006.01850
Citation:
Chen Jie, Fang Guang-you, Li Fang. The Application of Time Domain Beamforming to Ultra-wideband Through-wall Imaging Radar[J]. Journal of Electronics & Information Technology, 2008, 30(6): 1341-1344. doi: 10.3724/SP.J.1146.2006.01850
Ultra-WideBand (UWB) through-wall imaging radar is a promising technique and can be widely used for detecting and locating moving people through obstacles. In this paper, time domain beamforming method is presented for UWB through-wall imaging applications. The propagating wave slows down, encounters refraction and is attenuated as it passes through the wall. Firstly, the travel time is calculated from the antenna to the target in closed form based on the refraction model. Next, the beamformer design is presented, which incorporates the wall effects. Finally, Finite-Difference Time-Domain is used to demonstrate the efficacy of beamforming method and the impact of incorrect estimates of the wall thickness and dielectric constant on performance is also considered.
Ahmad F and Amin M G. A noncoherent radar systemapproach for through-the-wall[J].Proceedings of SPIE.2005,5778:196-207[2]Zetik R, Crabbe S, and Krajnak J, et al.. Detection andlocalization of persons behind obstacles using M-sequencethrough-the-wall radar. Proceedings of SPIE, 2006, 6201:62010.[3]Nag S, Barnes M A, and Payment T, et al.. An ultrawidebandthrough-wall radar for detecting the motion ofpeople in real time[J].Proceedings of SPIE.2002, 4744:48-57[4]Gauthier S and Chamma W. Surveillance through concretewalls[J].Proceedings of SPIE.2004, 5403:597-608[5]Hussain M G M. Principles of space-time array processing forultrawide-band impulse radar and radio communications[J].IEEE Trans. on Vehicular Technology.2002, 51(3):393-403[6]Bond E J, Li X, and Hagness S C, et al.. Microwave imagingvia space-time beamforming for early detection of breastcancer[J].IEEE Trans. on Antenna and Propagation.2003,51(8):1690-1705[7]Li X, Bond E J, and Van Veen B D, et al.. An overview ofultra-wideband microwave imaging via space-timebeamforming for early-stage breast-cancer detection[J].IEEEAntennas and Propagation Magazine.2005, 47(1):19-34[8]Frazier L M. Radar surveillance through solid materials[J].Proceedings of SPIE.1997, 2938:139-146[9]Abramowitz M and Stegun I A. Handbook of MathematicalFunctions with Formulas, Graphs, and Mathematical Tables.9th printing, New York: U.S. Department of Commerce, 1972:17.[10]Beyer W H. CRC Standard Mathematical Tables, 28th ed.FL: CRC Press, 1987: 12.