3 May 2012 Electromagnetic investigation on imaging of disturbed earth feature for buried target detection
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Abstract
Electromagnetic (EM) simulations from UHF to X-band are undertaken to determine the feasibility of exploiting ground surface scattering for subsurface target detection. A ground surface containing a target emplacement-related disturbance is physically represented by a composite roughness profile with Gaussian statistics, in conjunction with a homogeneous dielectric model. Bistatic wideband imaging of the target/surface disturbance scene-generated using scattering data from forward-looking sensing simulations-indicates that at X-band, for the parameters defined in this work, the disturbed surface feature is observable with a scattering response that is distinct-both visually and statistically-from that of the undisturbed surface. At lower frequencies (UHF to C-band), the disturbance is far less apparent due to the lack of sufficient image resolution. The buried target itself, however, is visible only at lower frequency bands. Consequently, it is expected that a judicious synthesis of the scattering data from different frequency bands can lead to enhanced target detection performance.
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DaHan Liao, "Electromagnetic investigation on imaging of disturbed earth feature for buried target detection", Proc. SPIE 8361, Radar Sensor Technology XVI, 836110 (3 May 2012); doi: 10.1117/12.920981; https://doi.org/10.1117/12.920981
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