Comparative analysis of two thickness gauging algorithms for plane-layered media using impulse georadars
Abstract
A comparative analysis of two methods for processing ultra-wideband signals of pulsed ground penetrating radar during monitoring the current condition of non-rigid pavements was provided. The high efficiency of inspections of highways with the help of GPR systems installed on the automobile laboratory was confirmed. The use of georadars ensures low monitoring cost due to the possibility of obtaining primary data while car-laboratory moves at a speed of traffic flow, and on the other hand, by eliminating such costly control operations as core sampling and cutting of the pavement. The advantages of using the Hilbert transform and integral transform to ensure reliable and convenient separation of partial pulses in complex signals reflected from plane-layered media with closely spaced internal boundaries (thin layers) are also established. The practical criteria for the limits of the application of visual signal processing and practical recommendations for the further improvement of algorithms for the interpretation of GPR data arrays are indicated.
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