رادار اپرچر مصنوعی موج متری برای شناسایی اشیاء پنهان

This unique resource presents the principles of meter wave ground imaging radar focusing on foliage penetration. Scattering of VHF/UHF radar signals are presented including the basic laws of electromagnetism, homogeneous media, media discontinuities/non-flat media discontinuities, and ground reflectivity. The book introduces meter wavelength synthetic aperture radar, bandwidth, and SAR imaging principles, including moving objects and also compares collected SAR data. Meter wavelength SAR system design and processing is explored, highlighting low frequency SAR design aspects, characterization of additive noise, antenna system basics, waveforms and emission adaptation which is critical material to the advancement in sensors and signal processing for below ground imaging by the energy industry and governments worldwide. The FFBP method of processing, explicit treatment of base 2 FFBP is explained along with motion errors sensitivity and motion estimation methods. The book also explains the Bayesian change detection, covariance moving target extraction and polarimetric subsurface imaging. Meter-Wave Synthetic Aperture Radarfor Concealed Object Detection Contents Foreword Acknowledgment 1 This Book: Why and How References 2 Scattering of Very High Frequency/Ultrahigh Frequency Radar Signals 2.1 Introduction 2.2 Basic Laws of Electromagnetism 2.3 Homogeneous Media 2.4 Media Discontinuities: Media Divided by a Flat Boundary 2.5 Nonflat Media Discontinuities 2.6 Ground Reflectivity 2.7 Generic Objects References 3 Meter Wavelength Synthetic Aperture Radar 3.1 Introduction 3.2 Useful Bandwidth 3.3 SAR Imaging Principles 3.4 Comparison With Collected SAR data 3.5 SAR Imaging of Moving Objects References 4 Meter Wavelength SAR System Design 4.1 Low-Frequency SAR Design Aspects 4.2 Characterization of Additive Noise 4.3 Antenna System Basics 4.4 Waveforms 4.5 Emission Adaptation References 5 Meter Wavelength SAR Processing 5.1 Introduction 5.2 FFBP Method 5.3 Explicit Treatment of Base 2 FFBP 5.4 Sensitivity to Motion Errors 5.5 Motion Estimation Methods References 6 Multidata Target Detection 6.1 Introduction 6.2 Bayesian Change Detection 6.3 Covariance Moving Target Extraction 6.4 Polarimetric Subsurface Imaging References About the Author Index This book presents the principles of meter wavelength synthetic aperture radar, bandwidth and SAR imaging. It also compares collected SAR data and highlights low frequency SAR system design aspects.