Ground-penetrating Radar Signal Processing And Software Development,

The subsurface Ground Penetrating Radar (GPR) introduces Carrier-Free Single Pulse Ultra Wide Band Radar, for the size of the detecting target is usually small. While improving the Range Resolution, using Synthetic Aperture (SA) processing based on holographic imaging in order to improve the Azimuth Resolution. The main task of this subject is to estimate the permittivity of the medium where the GPR detected. Using the estimated permittivity to carry through the SA processing, orientate the target, and display the result. To build the signal processor, we use a embedded SBC (Single Board Computer) PCM-9371 and a AD data acquisition card. In bulk of experiments, the processor meets our demand. On this paper, first, we give the development and the principle of the GPR, next, we introduce the algorithm which estimates the permittivity. And we narrate the result of signal processing and target orientation, and display it. At last, we complete the target detected experiment. What I have done in this subject include: 1. Analyze the signal model of subsurface GPR. 2. Study the algorithm of the signal processing, which includes Estimating Permittivity, Clutter Reduction algorithm and SA algorithm. 3. Carry out the Estimating Permittivity. 4. Carry out the SA processing and orientate the target based on the estimated permittivity. 5. Finish a redesign of the processor and realize the connecting with the antenna unit. 6. Programming the windows'procedures. 7. Accomplish the experiments in open country. Finish Processing the acquired data and displaying the result.