U. Spagnolini et V. Rampa, Multitarget detection/tracking for monostatic ground penetrating radar: Application to pavement profiling, IEEE GEOSCI, 37(1), 1999, pp. 383-394
Citations number
17
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
Monostatic ground penetrating radar (GPR) has proven to be a useful techniq
ue in pavement profiling, In road and highway pavements, layer thickness an
d permittivity of asphalt and concrete can be estimated by using an inverse
scattering approach, Layer-stripping inversion refers to the iterative est
imation of layer properties from amplitude and time of delay (TOD) of echoe
s after their detection, This method is attractive for realtime implementat
ion, in that accuracy is improved by reducing false alarms.
To make layer stripping useful, a multitarget detection/tracking (D/T) algo
rithm is proposed. It exploits the lateral continuity of echoes arising fro
m a multilayered medium, Interface D/T means that both detection and tracki
ng are employed simultaneously (not sequentially). For each scan, both dete
ction of the target and tracking of the corresponding TOD of the backscatte
red echoes are based on the evaluated a posteriori probability density. The
TOD is then estimated by using the maximum a posteriori (MAP) or the minim
um mean square error (MMSE) criterion. The statistical properties of a scan
are related to those of the neighboring ones by assuming, for the interfac
e, a first-order Markov model.