Results 21 to 30 of about 4,257,836 (266)
Developments in target micro-doppler signatures analysis: radar imaging, ultrasound and through-the-wall radar [PDF]
, 2013 Target motions, other than the main bulk translation of the target, induce Doppler modulations around the main Doppler shift that form what is commonly called a target micro-Doppler signature.
Soraghan, J. J. +5 more
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Simultaneous Localization And Mapping in a Marine Environment using Radar Images
, 2009 Simultaneous Localization And Mapping (SLAM) is a process of mapping an unknown environment and at the same time keeping track of the position within this map. In this theses, SLAM is performed in a marine environent using radar images only. A SLAM solution is presented. It uses SIFT to compare pairs of radar images.
Svensson, Henrik
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Entropy, 2022 In this study, a method based on the discrete wavelet transform (DWT) and azimuth-scale expansion is presented to retrieve the sea-surface wind direction from a single X-band marine radar image.
Huanyu Yu, Hui Wang, Zhizhong Lu
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RCS measurements and radar imaging of marine objects
Transactions of the Krylov State Research Centre, 2020 Object and purpose of research. This paper discusses the results of experimental studies in radar imaging of marine objects, as well as the measurements of radar cross-section (RCS) and 2D radar portraits in natural conditions as per integrated synthetic aperture radar (ISAR) approach. Materials and methods.
Alexander Y. Andreev +2 more
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Remote Sensing, 2020 Cetaceans are protected species all over the world, most of them are vulnerable, endangered, or data deficient (according to International Union for Conservation of Nature - IUCN red list).
Matteo Mingozzi +2 more
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Are Pixel Intensities Proportional To Radar Cross Section In SAR Images? [PDF]
, 2012 Radar cross section has long been the measurement quantity of choice to describe the radar reflectivity of point targets in calibrated synthetic aperture radar (SAR) images.
Döring, Björn J. +3 more
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Determination of Bathymetry Using Marine Radar Images of Waves [PDF]
Ocean Wave Measurement and Analysis (2001), 2002 This paper illustrates a method of calculating bathymetric maps of shallow water areas (
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Multipath Reflectivity Estimation in Urban Environments for Synthetic Aperture Radar Images [PDF]
, 2010 Synthetic Aperture Radar (SAR) images a target region reflectivity function in the multi-dimensional spatial domain of range and cross-range. SAR synthesizes a large aperture radar in order to achieve a finer azimuth resolution than the one provided by ...
Arriba Ruiz, Imanol de +8 more
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An Energy Spectrum Algorithm for Wind Direction Retrieval From
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 In this study, an energy spectrum (ES) algorithm is proposed to retrieve wind direction from X-band marine radar image sequences. This algorithm is based on utilizing the occlusion area zero-pixel percentage to distinguish rain-free and rain-contaminated
Hui Wang +5 more
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A new interpretation of multifrequency/multipolarization radar signatures of the Gulf Stream front
, 1999 Radar signatures which are observed on SIR-C/X-SAR multifrequency/multipolarization synthetic aperture radar images of the Gulf Stream off the U.S. east coast are compared with results of simulations with a numerical radar imaging model. Based on in situ
Susanne Ufermann +5 more
core +2 more sources