Yt. Dong et al., Multi-aspect detection of surface and shallow-buried unexploded ordnance via ultra-wideband synthetic aperture radar, IEEE GEOSCI, 39(6), 2001, pp. 1259-1270
Citations number
20
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
An ultra-wideband (UWB) synthetic aperture radar (SAR) system is investigat
ed for the detection of former bombing ranges, littered by unexploded ordna
nce (UXO), The objective is detection of a high enough percentage of surfac
e and shallow-buried UXO, with a low enough false-alarm rate, such that a f
ormer range can be detected. The physics of UWB SAR scattering is exploited
in the context of a hidden Markov model (HMM), which explicitly accounts f
or the multiple aspects at which a SAR system views a given target, The HMM
is trained on computed data, using SGR imagery synthesized via a validated
physical-optics solution. The performance of the HMM is demonstrated by pe
rforming testing on measured UWB SAR data for many surface and shallow UXO
buried in soil in the vicinity of naturally occurring clutter.