| Popis: |
Pulse type of ground penetrating radar having ns(10-9 s) order width has been widely used at the field of detecting buried objects such a pipe, cable and archaeological materials. The target usually exists in a few meters in depth of underground. In this case, difficulties to detect objects are estimation of the influence surrounding by dispersive medium and improvement of resolution for to choice the optimum parameters of transmitting waveform, the signal processing of receiving radar echo. Authors have been already reported to formaer problem and some signal processing method to the later.1),2) In this paper, we present more accurate calculation results and describe about properties of pulse type radar's echo reflected by cavity changing its parameters. |
