Forensic GPR: finite-difference simulations of responses from buried human remains

被引:44
作者
Hammon, WS [1 ]
McMechan, GA [1 ]
Zeng, XX [1 ]
机构
[1] Univ Texas, Ctr Lithospher Studies, Richardson, TX 75083 USA
关键词
ground-penetrating radar (GPR); forensic; human remains; finite-difference modeling;
D O I
10.1016/S0926-9851(00)00027-6
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Time domain 2.5-D finite-difference simulations of ground-penetrating radar (GPR) responses from models of buried human remains suggest the potential of GPR for detailed non-destructive forensic site investigation. Extraction of information beyond simple detection of cadavers in forensic investigations should be possible with current CPR technology. GPR responses are simulated for various body cross-sections with different depths of burial, soil types, soil moisture contents, survey frequencies and antenna separations. Biological tissues have high electrical conductivity so diagnostic features For the imaging of human bodies are restricted to the soil/skin interface and shallow tissue interfaces. A low amplitude reflection shadow zone occurs beneath a body because of high GPR attenuation within the: body. Resolution of diagnostic features of a human target requires a survey frequency of 900 MHz or greater and an increment between recording stations of 10 cm or less. Depth migration focuses field GPR data into an image that reveals accurate information on the number, dimensions, locations and orientations of body elements. The main limitation on image quality is attenuation in the surrounding soil and within the body. 3-D imaging is also feasible. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:171 / 186
页数:16
相关论文
共 37 条
[1]  
Alongi A. V., 1973, Proceedings of the 1st International Electronic Crime Countermeasures Conference, P79
[2]   THE SEARCH FOR GRAVES [J].
BEVAN, BW .
GEOPHYSICS, 1991, 56 (09) :1310-1319
[3]  
Calkin S. F., 1995, P S APPL GEOPH ENG E, P397
[4]  
Curtis J.O., 1995, EL9534 US ARM CORPS
[5]  
Davenport G. C., 1988, LEADING EDGE, P64, DOI 10.1190/1.1439549
[6]  
DAVENPORT GC, 1990, GEOTIMES, V35, P13
[7]   Ground penetrating radar surveys to locate 1918 Spanish Flu victims in permafrost [J].
Davis, JL ;
Heginbottom, JA ;
Annan, AP ;
Daniels, RS ;
Berdal, BP ;
Bergan, T ;
Duncan, KE ;
Lewin, PK ;
Oxford, JS ;
Roberts, N ;
Skehel, JJ ;
Smith, CR .
JOURNAL OF FORENSIC SCIENCES, 2000, 45 (01) :68-76
[8]   GROUND-PENETRATING RADAR FOR HIGH-RESOLUTION MAPPING OF SOIL AND ROCK STRATIGRAPHY [J].
DAVIS, JL ;
ANNAN, AP .
GEOPHYSICAL PROSPECTING, 1989, 37 (05) :531-551
[9]  
EATON T, 1999, DALLAS MORNING NEWS, V151, pA1
[10]   The dielectric properties of biological tissues .1. Literature survey [J].
Gabriel, C ;
Gabriel, S ;
Corthout, E .
PHYSICS IN MEDICINE AND BIOLOGY, 1996, 41 (11) :2231-2249