Ground Penetrating Radar Explained: How GPR Works Step-by-Step | GPR Decoded Ep. 3

Ground Penetrating Radar (GPR) explained step-by-step. Learn how GPR works, how radar pulses travel underground, and how subsurface images are created from electromagnetic wave reflections. In Episode 3 of GPR Decoded, we explain the physics of Ground Penetrating Radar in a clear and practical way. You will see how radar systems generate high-frequency electromagnetic pulses, how GPR antennas transmit and receive signals, and how dielectric properties of materials control wave reflection, signal attenuation, and penetration depth. This video covers the fundamental principles behind subsurface radar imaging used in engineering, geophysics, construction, archaeology, and non-destructive testing. Topics explained: • Ground Penetrating Radar fundamentals • How GPR generates and transmits electromagnetic pulses • Antenna operation in radar systems • Dielectric constant and material response • Moisture, conductivity, and signal loss • Radar wave reflection and depth calculation • Radargrams and hyperbolic signatures • How GPR detects buried objects and underground layers If you want to understand how underground scanning technology works in real conditions — this episode explains the full mechanism behind Ground Penetrating Radar. Subscribe for more professional insights into GPR technology, subsurface imaging, and applied radar physics. CHAPTERS 00:00 Introduction 00:27 What Is Ground Penetrating Radar? 01:30 How GPR Generates Radar Pulses 02:08 How Antennas Transmit Electromagnetic Waves 03:35 Frequency, Resolution and Penetration Depth 04:02 What Happens When Radar Enters the Ground 04:13 Dielectric Constant Explained 05:02 Moisture, Conductivity and Signal Loss 06:09 Wave Reflection at Material Boundaries 06:50 Why Metal Reflects Strongly 07:27 How GPR Builds Subsurface Images 07:49 Radargrams and Hyperbolas 08:08 Why GPR Interpretation Is Not Direct Imaging 08:27 Key Principles Recap 09:10 Final Thoughts