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IEEE Geoscience and Remote Sensing Letters publication information
Publication Year: 2015,Page(s):C2 - C2
IEEE Geoscience and Remote Sensing Letters publication information
Year: 2015 | Volume: 12 | Issue: 2
Automatic Recognition of Isolated Buildings on Single-Aspect SAR Image Using Range Detector
Publication Year: 2015,Page(s):219 - 223
Cited by: Papers (24)
Man-made building objects mostly with vertical wall structures may present distinct scattering patterns, e.g., wall/roof upfront scattering, wall-ground double scattering, etc., along the range dimension in high-resolution synthetic aperture radar (SAR) images. In this letter, a 1-D detector, referred to as the “range detector,” is presented for building detection, which operates only along the ra...Show More
Discriminative Spectral–Spatial Margin-Based Semisupervised Dimensionality Reduction of Hyperspectral Data
Publication Year: 2015,Page(s):224 - 228
Cited by: Papers (35)
The past few years have witnessed prosperity of spectral-spatial processing of hyperspectral images. In this letter, in order to determine the optimal projection subspace of spectrums, we define discriminate spectral-spatial margins (DSSMs) to reveal the local information of hyperspectral pixels and explore the global structures of both labeled and unlabeled data via low-rank representation (LRR)....Show More
A Novel Space–Time Coding Alamouti Waveform Scheme for MIMO-SAR Implementation
Publication Year: 2015,Page(s):229 - 233
Cited by: Papers (17)
This letter presents a novel extended space-time coding waveform scheme for multiple-input-multiple-output synthetic aperture radar implementation. The extensions include the fulfilling of the two Alamouti periods in one transmit duration minimizing the time-variant channel effect and the new form of the basic orthogonal waveforms. The main advantages of the proposed waveform scheme include ghost ...Show More
Modeling Directional Brightness Temperature Over Mixed Scenes of Continuous Crop and Road: A Case Study of the Heihe River Basin
Publication Year: 2015,Page(s):234 - 238
Cited by: Papers (20)
A new geometric optical model is proposed in this letter to simulate the directional brightness temperature (DBT) distribution over mixed scenes of continuous crop and road. The DBT distributions of the crop and road zones are separately calculated, and the road zone consists of a road and adjacent crop sides. A road distribution polar map is designed to show all of the roads of different lengths,...Show More
Tropical-Forest Biomass Estimation at X-Band From the Spaceborne TanDEM-X Interferometer
Robert Treuhaft;Fabio Gonçalves;João Roberto dos Santos;Michael Keller;Michael Palace;Søren N. Madsen;Franklin Sullivan;Paulo M. L. A. Graça
Publication Year: 2015,Page(s):239 - 243
Cited by: Papers (84)
This letter reports the sensitivity of X-band interferometric synthetic aperture radar (InSAR) data from the first dual-spacecraft radar interferometer, TanDEM-X, to variations in tropical-forest aboveground biomass (AGB). It also reports the first tropical-forest AGB estimates from TanDEM-X data. Tropical forests account for about 50% of the world's forested biomass and play critical roles in the...Show More
Stochastic Approach in Wet Snow Detection Using Multitemporal SAR Data
Nikola Besic;Gabriel Vasile;Jean-Pierre Dedieu;Jocelyn Chanussot;Srdjan Stankovic
Publication Year: 2015,Page(s):244 - 248
Cited by: Papers (15)
This letter introduces an alternative strategy for wet snow detection using multitemporal synthetic aperture radar (SAR) data. The proposed change detection method is primarily based on the comparison between two X-band SAR images acquired during the accumulation (winter) and melting (spring) seasons, in the French Alps. The new decision criterion relies on the local intensity statistics of the SA...Show More
Influence of Incidence Angle on the Coherent Copolar Polarimetric Response of Rice at X-Band
Juan M. Lopez-Sanchez;Fernando Vicente-Guijalba;J. David Ballester-Berman;Shane R. Cloude
Publication Year: 2015,Page(s):249 - 253
Cited by: Papers (29)
The coherent nature of the acquisition by TerraSAR-X of both copolar channels (HH and VV) enables the generation of many different polarimetric observables with physical interpretation, as have recently been used for monitoring rice fields. In this letter, the influence of incidence angle upon these polarimetric observables is analyzed by comparing three stacks of images that were acquired simulta...Show More
Automatic Tracking of Pregenesis Tropical Disturbances Within the Deviation Angle Variance System
Oscar G. Rodríguez-Herrera;Kimberly M. Wood;Klaus P. Dolling;Wiley T. Black;Elizabeth A. Ritchie;J. Scott Tyo
Publication Year: 2015,Page(s):254 - 258
Cited by: Papers (9)
The deviation angle variance (DAV) method is an objective tool for estimating the intensity of tropical cyclones (TCs) using geostationary infrared (IR) brightness temperature data. At early stages in TC development, the DAV signal can be also a robust predictor of tropical cyclogenesis. However, one of the problems with using the DAV method at these early stages is that the operator has to subjec...Show More
Assessment of Uncertainties in Eddy Covariance Flux Measurement Based on Intensive Flux Matrix of HiWATER-MUSOEXE
Publication Year: 2015,Page(s):259 - 263
Cited by: Papers (64)
To study the multiscale characteristics of ecohydrological processes in the Heihe River Basin, an intensive flux observation matrix was established, which consisted of mainly 17 eddy covariance (EC) flux stations in a 5.5 km × 5.5 km area of the Zhangye oasis. Formal observations began in June and continued through September 2012. Before the main campaign, an intercomparison for all instruments (i...Show More
Large Area Soil Moisture Variations in Response to Cyclone Phailin in Eastern India
Publication Year: 2015,Page(s):264 - 268
Cited by: Papers (7)
In October 2013, a very severe cyclonic storm Phailin that originated from a remnant cyclonic circulation from the South China Sea progressed westward toward the Indian subcontinent and made its landfall in Gopalpur town of an eastern Indian state of Orissa. The landfall (on October 12, 2013) was followed by very heavy rainfall in the Indian states of Orissa, Andhra Pradesh, Chhattisgarh, Jharkhan...Show More
Spatial Resolution Enhancement of Earth Observation Products Using an Acceleration Technique for Iterative Methods
Flavia Lenti;Ferdinando Nunziata;Claudio Estatico;Maurizio Migliaccio
Publication Year: 2015,Page(s):269 - 273
Cited by: Papers (38)
A simple innovation that enables a faster convergence rate of iterative gradient-like descent approaches is proposed and applied to linear image reconstruction problems from irregular sampling. The key idea is to reduce the amount of regularization effects of the conventional Tikhonov functional by introducing a negative seminorm penalty term, whose role is to speed up the convergence without redu...Show More
The Gridding Method for Image Reconstruction of Nonuniform Aperture Synthesis Radiometers
Li Feng;Qingxia Li;Ke Chen;Yufang Li;Xiaolin Tong;Xinqiang Wang;Hailiang Lu;Yan Li
Publication Year: 2015,Page(s):274 - 278
Cited by: Papers (10)
Nonuniform aperture synthesis radiometers (NASRs) are emerging in Earth remote sensing. The main disadvantage of NASRs is the complexity of the image reconstruction. In this letter, the gridding method is introduced as an efficient method to reconstruct brightness temperature images for NASRs. In the gridding method, a Voronoi diagram is applied to dividing the sampling region in the spatial frequ...Show More
Mitigation of Direct Signal Cross-Talk and Study of the Coherent Component in GNSS-R
Francisco Martin;Adriano Camps;Fran Fabra;Antonio Rius;Manuel Martín-Neira;Salvatore D'Addio;Alberto Alonso
Publication Year: 2015,Page(s):279 - 283
Cited by: Papers (34)
In Global Navigation Satellite System Reflectometry (GNSS-R), power waveforms or Delay-Doppler Maps (DDM) are incoherently averaged to reduce the standard deviation of the fluctuations caused by the speckle and thermal noise. This letter proposes a simple and innovative processing concept based on the computation of the variance of the complex waveforms. By this approach, the coherent part of the ...Show More
Spatiotemporal Pattern Recognition and Nonlinear PCA for Global Horizontal Irradiance Forecasting
G. A. Licciardi;R. Dambreville;J. Chanussot;Stéphanie Dubost
Publication Year: 2015,Page(s):284 - 288
Cited by: Papers (23)
This letter presents a novel technique for the forecast of the ground horizontal irradiance (GHI) from satellite-based images. To enhance the forecast accuracy, spatial information in addition to temporal information has been considered. This produced an increase in the computational load of the forecast process. Dimensionality reduction techniques based on nonlinear principal component analysis (...Show More
Human Detection Using Doppler Radar Based on Physical Characteristics of Targets
Publication Year: 2015,Page(s):289 - 293
In this letter, we propose a method for detecting a human subject using Doppler radar by investigating the physical characteristics of targets. Human detection has a number of applications in security, surveillance, and search-and-rescue operations. To classify a target from the Doppler signal, several features related to the physical characteristics of a target are extracted from a spectrogram. T...Show More
Investigating the Impact of Soil Moisture on Thermal Infrared Emissivity Using ASTER Data
Publication Year: 2015,Page(s):294 - 298
Cited by: Papers (24)
This study investigates the effects of soil moisture (SM) on land surface emissivity (LSE) using the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) LSE data acquired in Heihe Watershed Allied Telemetry Experimental Research (HiWATER). Three bare surface sites with automatic meteorological stations that collected long-term SM data were chosen to evaluate the SM impact. The A...Show More
Electromagnetic Inverse Scattering Series Method for Positioning Three-Dimensional Targets in Near-Surface Two-Layer Medium With Unknown Dielectric Properties
Publication Year: 2015,Page(s):299 - 303
Cited by: Papers (7)
Positioning 3-D targets buried in layered medium with electromagnetic waves has widespread applications, such as the detection of land mines. Most of the current electromagnetic inverse methods need to know the preknowledge of the dielectric properties for layered background medium, in order to accurately reconstruct concealed targets. However, this condition is hardly satisfied in real problems. ...Show More
Point Spread Function Analysis for GNSS-Based Multistatic SAR
Publication Year: 2015,Page(s):304 - 308
Cited by: Papers (86)
This letter presents an analysis of the multistatic point-spread function (MPSF) for passive synthetic aperture radar (SAR) with navigation satellites as opportunity transmitters and a stationary receiver. It is shown that a noncoherent combination of bistatic SAR images, obtained by multiple, spatially separated satellites, can yield multistatic imagery that may be essentially improved in terms o...Show More
Feature Selection Based on Hybridization of Genetic Algorithm and Particle Swarm Optimization
Publication Year: 2015,Page(s):309 - 313
Cited by: Papers (363)
A new feature selection approach that is based on the integration of a genetic algorithm and particle swarm optimization is proposed. The overall accuracy of a support vector machine classifier on validation samples is used as a fitness value. The new approach is carried out on the well-known Indian Pines hyperspectral data set. Results confirm that the new approach is able to automatically select...Show More
Optical-Driven Nonlocal SAR Despeckling
Luisa Verdoliva;Raffaele Gaetano;Giuseppe Ruello;Giovanni Poggi
Publication Year: 2015,Page(s):314 - 318
Cited by: Papers (30)
We propose a new synthetic aperture radar (SAR) despeckling technique based on nonlocal filtering and driven by a coregistered optical image. A preliminary homogeneous versus heterogeneous classification of the image is used to decide where the optical guide can be safely used, thus preventing any distortion of the SAR geometry. Even in regions where the use of optical data is enabled, despeckling...Show More
Optical-Driven Nonlocal SAR Despeckling
Luisa Verdoliva;Raffaele Gaetano;Giuseppe Ruello;Giovanni Poggi
Year: 2015 | Volume: 12 | Issue: 2
Robust Ambiguous Clutter Suppression for the Near-Shore Water Areas With Spaceborne Multichannel SAR Systems
Publication Year: 2015,Page(s):319 - 323
Cited by: Papers (4)
In practice, the ambiguous image of the strong ground clutter may dominate in the adjacent water areas in the case of high-azimuth ambiguity level for the spaceborne synthetic aperture radar. In this letter, a robust ambiguous clutter suppression method is proposed for the ground moving target indication. The subspace projection approach is used to suppress the ambiguous clutter, and the notch bro...Show More
High-Resolution SAR Imaging of Ground Moving Targets Based on the Equivalent Range Equation
Publication Year: 2015,Page(s):324 - 328
Cited by: Papers (12)
In this letter, a novel ground moving target imaging algorithm suitable for high-resolution synthetic aperture radar (SAR) is proposed. The key step of the proposed algorithm is to make a moving target equivalent to a static one based on the derived equivalent range equation. Due to such equivalence, the commonly used standard algorithms for stationary scene imaging (e.g., the range Doppler algori...Show More
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