Advanced Techniques for Ground-Penetrating Radar Systems

摘要

A Ground Penetrating Radar (GPR) system makes use of digital circuitry for synchronizing the sampling of a received radar signal with a transmitted radar signal. The digital synchronization achieves improved waveform reproduction and greater receiver sensitivity. Furthermore, the system employs digital circuitry to control the gain of a receiver amplifier. The digitally controlled gain makes it possible to accurately calibrate the amplitude of received radar signals with great precision while achieving good dynamic range.

主权项

1. A digital circuit for generating a trigger signal, wherein the digital circuit comprises a delay line, and further wherein the trigger signal triggers sampling of a waveform received by a radar antenna aimed toward ground.