APPENDIX C
NOMENCLATURE
C.1 ACRONYMS AND ABBREVIATIONS
AIRSAR: Airborne Synthetic Aperture Radar ALOS PALSAR: Advanced Land Observing Satellite Phased Array L-Band Synthetic Aperture Radar ASAR: Advanced Synthetic Aperture Radar [on European Space Agency Environmental Satellite (Envisitat)] dB: power in decibels DEM: digital elevation model ed.: editor Envisat: European Space Agency Environmental Satellite Eq.: equation ERS: European Remote Sensing Satellite Fig.: Figure GHz: gigahertz HH: horizontal-horizontal HV: horizontal-vertical IEEE: Institute of Electrical and Electronics Engineers IEM: Integral Equation Method IGARSS: International Geoscience and Remote Sensing Symposium JPL: Jet Propulsion Laboratory NASA: National Aeronautics and Space Administration NNED: nonnegative eigenvalue decomposition PFR: pulse repetition frequency RASAM: Radiometer-Scatterometer rms: root mean square RVI: radar thin vegetation index SAR: synthetic aperture radar SIR-B: Shuttle Imaging Radar-B SIR-C/X: Spaceborne Imaging Radar C-band and X-band SLAR: side-looking aperture radars SMAP: Soil Moisture Active Passive SNR: signal-to-noise ratio SPIE: Society of Photographic Instrumentation Engineers SPM: small-perturbation method VH: vertical-horizontal vol.: volume VV: vertical-vertical w.r.t: with respect to
C.2 COMMONLY USED SYMBOLS
R: range c: speed of light θ or θi: incidence angle B: radar bandwidth τp: physical pulse length λ: wavelength f0: center frequency σN: noise equivalent backscatter ...
