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IEEE Transactions on Geoscience and Remote Sensing

Issue 7  Part 2 • July 2013

This issue contains several parts.Go to:  Part 1

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Displaying Results 1 - 25 of 29
• Front cover

Publication Year: 2013, Page(s): C1
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• IEEE Transactions on Geoscience and Remote Sensing publication information

Publication Year: 2013, Page(s): C2
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Publication Year: 2013, Page(s):4073 - 4074
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• Evaluating the Semiempirical H - Q Model Used to Calculate the L-Band Emissivity of a Rough Bare Soil

Publication Year: 2013, Page(s):4075 - 4084
Cited by:  Papers (25)
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In this paper, a numerical modeling approach was used to evaluate the semiempirical H-Q model used in the Soil Moisture and Ocean Salinity (SMOS) retrieval algorithm to account for roughness effects over bare soil. The H-Q model uses four parameters, HR, QR, NRH , and NRV, which are usually calibrated at the ground scale for different surface types. The ... View full abstract»

• Feasibility of Characterizing Snowpack and the Freeze–Thaw State of Underlying Soil Using Multifrequency Active/Passive Microwave Data

Publication Year: 2013, Page(s):4085 - 4102
Cited by:  Papers (13)
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An ensemble-based data assimilation approach is developed to characterize the snow water equivalent (SWE) and underlying soil freeze-thaw state (including the soil surface temperature and both soil ice and liquid water content) using multifrequency passive and active microwave remote-sensing measurements. Its feasibility was examined using a synthetic test where passive microwave (1.4, 18.7, and 3... View full abstract»

• A Unified Microwave Radiative Transfer Model for General Planar Stratified Media: Slab Formulation

Publication Year: 2013, Page(s):4103 - 4118
Cited by:  Papers (2)
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A unified microwave radiative transfer (UMRT) model is presented for computing the thermal radiation emitted from any geophysical medium composed of planar layers of either densely or tenuously distributed moderately sized spherical scatterers. UMRT employs the discrete-ordinate eigenanalysis (DOE) method with layer adding to solve the differential radiative transfer equation for such multilayer s... View full abstract»

• Transitioning From CRD to CDRD in Bayesian Retrieval of Rainfall From Satellite Passive Microwave Measurements: Part 1. Algorithm Description and Testing

Publication Year: 2013, Page(s):4119 - 4143
Cited by:  Papers (9)
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In this Part 1 paper concerning a new Cloud Dynamics and Radiation Database (CDRD) algorithm, improvements in obtaining satellite retrievals of rainfall from multispectral passive microwave (PMW) radiometer measurements are obtained by transforming a conventional Cloud Radiation Database (CRD) algorithm. The improvements arise by combining parameter constraints derived from model-based dynamical-t... View full abstract»

• Sparse Subband Imaging of Space Targets in High-Speed Motion

Publication Year: 2013, Page(s):4144 - 4154
Cited by:  Papers (6)
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To achieve finer range resolution without increasing the bandwidth and sampling rate of the radar system, high-resolution imaging by data synthesizing using sparse subbands has received intensive attention in recent years. This paper derives the imaging geometry and signal model for radar imaging of space targets from sparse subbands. Next, it introduces and analyzes the available methods. Then, a... View full abstract»

• Three-Dimensional Real-Time Through-the-Wall Radar Imaging With Diffraction Tomographic Algorithm

Publication Year: 2013, Page(s):4155 - 4163
Cited by:  Papers (25)
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In this paper, a 3-D diffraction tomographic algorithm is proposed for real-time through-the-wall radar imaging (TWRI). The spectral expansion of the three-layered medium dyadic Green's function is employed to derive a linear relationship between the spatial Fourier transforms of the image and the scattered field under Born approximation. Then, the image can be efficiently reconstructed with inver... View full abstract»

• Full Polarimetric Bistatic Radar Imaging Experiments on Sets of Dielectric Cylinders Above a Conductive Circular Plate

Publication Year: 2013, Page(s):4164 - 4176
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This paper presents fully polarimetric bistatic radar scattering measurements on groups of dielectric vertical and/or tilted square cross-sectional cylinders above a conductive circular plate in the frequency range of 6-18 GHz. The experiments have been conducted in the BABI facility at the French Aerospace Lab (ONERA). The imaging experiments consider an azimuthal bistatic radar configuration wit... View full abstract»

• Detection Thresholds of Falling Snow From Satellite-Borne Active and Passive Sensors

Publication Year: 2013, Page(s):4177 - 4189
Cited by:  Papers (10)
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There is an increased interest in detecting and estimating the amount of falling snow reaching the Earth's surface in order to fully capture the global atmospheric water cycle. An initial step toward global spaceborne falling snow algorithms for current and future missions includes determining the thresholds of detection for various active and passive sensor channel configurations and falling snow... View full abstract»

• Multiphase SAR Image Segmentation With $G^{0}$ -Statistical-Model-Based Active Contours

Publication Year: 2013, Page(s):4190 - 4199
Cited by:  Papers (13)
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In this paper, we propose a variational multiphase segmentation framework for synthetic aperture radar (SAR) images based on the statistical model and active contour methods. The proposed method is inspired by the multiregion level set partition approaches but with two improvements. First, an energy functional which combines the region information and edge information is defined. The regional term... View full abstract»

• An Unsupervised Classification Approach for Polarimetric SAR Data Based on the Chernoff Distance for Complex Wishart Distribution

Publication Year: 2013, Page(s):4200 - 4213
Cited by:  Papers (14)
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A new unsupervised classification approach for polarimetric synthetic aperture radar (POLSAR) data is proposed in this paper. The Wishart-Chernoff distance is calculated and used in an agglomerative hierarchical clustering approach. Initial segmentation of POLSAR data into clusters is obtained based on the total backscattering power (SPAN) combined with the entropy, alpha angle, and anisotropy. Th... View full abstract»

• Segmented Reconstruction for Compressed Sensing SAR Imaging

Publication Year: 2013, Page(s):4214 - 4225
Cited by:  Papers (19)
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The compressed sensing (CS) synthetic aperture radar (SAR) imaging scheme can use random undersampled data to reconstruct images of sparse or compressible targets. However, compared to Nyquist sampling, the cost of the CS imaging scheme is the long reconstruction time, particularly for the conventional reconstruction strategy, which reconstructs the whole scene in one process. It also needs a larg... View full abstract»

• Kalman-Filter-Based Approach for Multisensor, Multitrack, and Multitemporal InSAR

Publication Year: 2013, Page(s):4226 - 4239
Cited by:  Papers (15)
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A Kalman-filter-based approach is presented for resolving 3-D surface displacements using multisensor, multitrack, and multitemporal interferometric synthetic aperture radar (SAR) measurements. Measurements from each interferogram are projected into the three reference directions and combined in the Kalman filter model with displacements determined from previous interferograms to produce updated d... View full abstract»

• A Fast Phase Unwrapping Method for Large-Scale Interferograms

Publication Year: 2013, Page(s):4240 - 4248
Cited by:  Papers (6)
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Two-dimensional phase unwrapping (PU) is a critical processing procedure of synthetic aperture radar interferometry. Thus far, many PU methods with high accuracy have been proposed. However, the limitation of computer's memory requirement is ignored in the design of most of these methods. To effectively solve this problem, a fast PU method for large-scale interferograms is proposed in this paper. ... View full abstract»

• DEM Error Correction in InSAR Time Series

Publication Year: 2013, Page(s):4249 - 4259
Cited by:  Papers (28)
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We present a mathematical formulation for the phase due to the errors in digital elevation models (DEMs) in synthetic aperture radar (SAR) interferometry (InSAR) time series obtained by the small baseline (SB) or the small baseline subset method. We show that the effect of the DEM error in the estimated displacement is proportional to the perpendicular baseline history of the set of SAR acquisitio... View full abstract»

• Analysis on the Resolution of Polarimetric Radar and Performance Evaluation of the Polarimetric Bandwidth Extrapolation Method

Publication Year: 2013, Page(s):4260 - 4278
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Polarimetric radar provides useful information on scattering mechanisms, and advances in polarimetric synthetic aperture radar (POLSAR) technology have shown the effect of polarization information on various applications. The disadvantage of POLSAR is low azimuth resolution capability. Since the effective pulse repetition frequency (PRF) in each polarimetric channel of POLSAR is half the total PRF... View full abstract»

• A High-Frequency Multipeak Model for Wide-Angle SAR Imagery

Publication Year: 2013, Page(s):4279 - 4291
Cited by:  Papers (14)
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A new modeling method for representing distributed scattering centers in wide-angle synthetic aperture radar (SAR) is presented. The proposed multipeak model approximates amplitudes of localized image peaks that typically appear at a single pixel or as an in-line set of pixels in a SAR image. In this way, the multipeak model is an improvement over existing peak models which poorly represent distri... View full abstract»

• Local Subpixel Coregistration of Interferometric Synthetic Aperture Radar Images Based on Fractal Models

Publication Year: 2013, Page(s):4292 - 4301
Cited by:  Papers (4)
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This paper presents a fine coregistration method for synthetic aperture radar (SAR) image processing, such as in InSAR interferogram generation. Under the assumption that SAR images are properly modeled as fractional Brownian motion, relative subpixel offsets between two images can be derived from the statistics of their increments. The method does not require upsampling or cross-correlation, thus... View full abstract»

• An Algorithm for the Detection and Tracking of Tropical Mesoscale Convective Systems Using Infrared Images From Geostationary Satellite

Publication Year: 2013, Page(s):4302 - 4315
Cited by:  Papers (20)
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This paper focuses on the tracking of mesoscale convective systems (MCS) from geostationary satellite infrared data in the tropical regions. In the past, several automatic tracking algorithms have been elaborated to tackle this problem. However, these techniques suffer from limitations in describing convection at the “true” scale and in depicting coherent MCS life cycles (split and m... View full abstract»

Publication Year: 2013, Page(s):4316 - 4329
Cited by:  Papers (1)
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Accurate spectral calibration of the in-flight sensors is crucial for processing and exploration of remotely sensed data. This paper developed a strategy to make spectral recalibration (i.e., spectral response function, central wavelength, and bandwidth) for in-flight broadband sensor using a device-responsivity-decomposition model with a priori knowledge and an optimization algorithm. Sensitivity... View full abstract»

• Characterization of Terra and Aqua MODIS VIS, NIR, and SWIR Spectral Bands' Calibration Stability

Publication Year: 2013, Page(s):4330 - 4338
Cited by:  Papers (23)
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The Moderate Resolution Imaging Spectroradiometer (MODIS) has successfully operated onboard the Terra spacecraft for more than 12 years and the Aqua spacecraft for more than ten years. It has 20 reflective solar bands covering the visible (VIS), near infrared (NIR), and short-wave infrared (SWIR) spectral regions. They are calibrated on orbit using regularly scheduled solar diffuser measurements a... View full abstract»

• Estimation of Detector Biases in MODIS Thermal Emissive Bands

Publication Year: 2013, Page(s):4339 - 4348
Cited by:  Papers (3)
| | PDF (905 KB) | HTML

The combination of multiple detectors and a double-sided mirror in the Moderate Resolution Imaging Spectroradiometer (MODIS) introduces striping in the imagery despite the use of onboard calibration systems. This results in a sharp unidirectional pattern across scan lines and leads to significant radiometric uncertainties in level-1 radiances, which further propagate into derived level-2 geophysic... View full abstract»

• A New Technique to Estimate Precipitation at Fine Scale Using Multifrequency Satellite Observations Over Indian Land and Oceanic Regions

Publication Year: 2013, Page(s):4349 - 4358
Cited by:  Papers (3)
| | PDF (1782 KB) | HTML

A new technique has been developed to estimate rainfall at very fine scale (hourly rain rate at 0.05° ×0.05° spatial resolution) over India and associated oceanic regions (20° S-40° N, 40° E-130° E). By using infrared (IR) and 6.7-μm water vapor (WV) channel observations from Meteosat-7, a new rain index (RI) is computed. The index computatio... View full abstract»

Aims & Scope

 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING (TGRS) is a monthly publication that focuses on the theory, concepts, and techniques of science and engineering as applied to sensing the land, oceans, atmosphere, and space; and the processing, interpretation, and dissemination of this information.

Full Aims & Scope

Editor-in-Chief
Antonio J. Plaza