PUMA Applied to Time Delay Estimation for Processing GPR Data over Debonded Pavement Structures

In this paper, principal-singular-vector utilization for modal analysis (PUMA) was adapted to perform time delay estimation on ground-penetrating radar (GPR) data by taking into account the shape of transmitted GPR signal. The super-resolution capability PUMA used separate overlapping backscattered echoes from a layered pavement structure with some embedded debondings. well-known root-MUSIC algorithm selected as benchmark performance assessment. simulation results showed that proposed performs very well, especially in case where sources are totally coherent, and it requires much less computational than algorithm.