By Topic

# IEEE Transactions on Geoscience and Remote Sensing

## Filter Results

Displaying Results 1 - 25 of 34
• ### Front cover

Publication Year: 2012, Page(s): C1
| PDF (244 KB)
• ### IEEE Transactions on Geoscience and Remote Sensing publication information

Publication Year: 2012, Page(s): C2
| PDF (140 KB)

Publication Year: 2012, Page(s):3269 - 3270
| PDF (120 KB)
• ### Multiple Aerosol Unmixing by the Split Bregman Algorithm

Publication Year: 2012, Page(s):3271 - 3279
| | PDF (406 KB) | HTML

For more than a decade, the U.S. government has been developing laser-based sensors for detecting, locating, and classifying aerosols in the atmosphere at safe standoff ranges. The motivation for this work is the need to discriminate aerosols of biological origin from interferent materials such as smoke and dust using the backscatter from multiple wavelengths in the long wave infrared (LWIR) spect... View full abstract»

• ### Sensor Noise Effects of the SWIR Bands on MODIS-Derived Ocean Color Products

Publication Year: 2012, Page(s):3280 - 3292
Cited by:  Papers (23)
| | PDF (2561 KB) | HTML

The results of this study demonstrate the effects of sensor noise in the shortwave infrared (SWIR) bands on the satellite-derived ocean color products, in particular, normalized water-leaving radiance spectra data. A simple radiance smoothing technique is used for reducing sensor noise equivalent radiance NEΔL(λ) (or increasing the sensor signal-to-noise ratio) values for the SWIR ra... View full abstract»

• ### Peakedness Effects in Near-Nadir Radar Observations of the Sea Surface

Publication Year: 2012, Page(s):3293 - 3301
Cited by:  Papers (9)
| | PDF (699 KB) | HTML

The simulation and interpretation of microwave sea radar return in the near-nadir region are still issues in view of the limitations of the geometrical optics approximation and the multiscale and non-Gaussian nature of the surface. We show that an unambiguous and fully consistent physical approach can be reached in the framework of the physical optics. The model is developed on the basis of variou... View full abstract»

• ### A New Methodology for Detecting Ice Sheet Surface Elevation Changes From Laser Altimetry Data

Publication Year: 2012, Page(s):3302 - 3316
Cited by:  Papers (24)
| | PDF (1653 KB) | HTML

The integrated program Surface Elevation Reconstruction And Change detection (SERAC) was specifically designed and developed for detecting surface elevation and elevation changes from the Ice Cloud and land Elevation Satellite (ICESat). ICESat carried geoscience laser altimeter system (GLAS) with the primary goal of measuring elevation changes of the polar ice sheets to sufficient accuracy to asse... View full abstract»

• ### Multiyear Arctic Sea Ice Classification Using QuikSCAT

Publication Year: 2012, Page(s):3317 - 3326
Cited by:  Papers (10)
| | PDF (3039 KB) | HTML

Long-term trends in Arctic sea ice are of particular interest in studies of global temperature, climate change, and industrial application. This paper analyzes intra-annual and interannual trends in Ku-band backscatter over first-year (FY) and multiyear (MY) sea ice to develop a new sea-ice-type classification method. Histograms of backscatter are derived from high-resolution backscatter images cr... View full abstract»

• ### Increasing Robustness of Postclassification Change Detection Using Time Series of Land Cover Maps

Publication Year: 2012, Page(s):3327 - 3339
Cited by:  Papers (7)
| | PDF (1150 KB) | HTML

The monitoring of land cover requires that stable land cover classes be distinguished from changes over time. Within this paper, a postclassification method is presented that provides land cover change information, based on a time series of land cover maps. The method applies a kernel filter to sequential land cover maps. Under some basic assumptions, it shows robustness against classification err... View full abstract»

• ### Fitting the Multitemporal Curve: A Fourier Series Approach to the Missing Data Problem in Remote Sensing Analysis

Publication Year: 2012, Page(s):3340 - 3353
Cited by:  Papers (28)
| | PDF (1772 KB) | HTML

With the advent of free Landsat data stretching back decades, there has been a surge of interest in utilizing remotely sensed data in multitemporal analysis for estimation of biophysical parameters. Such analysis is confounded by cloud cover and other image-specific problems, which result in missing data at various aperiodic times of the year. While there is a wealth of information contained in re... View full abstract»

• ### TerraSAR-X Data in Cut Slope Soil Stability Monitoring in Malaysia

Publication Year: 2012, Page(s):3354 - 3363
Cited by:  Papers (6)
| | PDF (1255 KB) | HTML

Landslides in Malaysia, and other tropical countries where heavy monsoon rains are common, form a risk to people, buildings, and roads. In particular, steep slopes that have been cut to accommodate road lines are prone to landslides. The objective of the study was to develop algorithms and methods that can be used to alert on increased risk of landslides through detecting small signs of slope inst... View full abstract»

• ### Imaging Below Irregular Terrain Using RF Tomography

Publication Year: 2012, Page(s):3364 - 3373
Cited by:  Papers (16)
| | PDF (554 KB) | HTML

Radio-frequency (RF) tomography is extended for imaging underground structures and tunnels assuming rough terrain. The theory of RF tomography described in an earlier paper remains applicable, provided that a numerical Green's function is computed. An FFT-based and intrinsically parallel method for obtaining numerical Green's functions is described. This method is corroborated with explicit formul... View full abstract»

• ### A Study of the Fourth-Order Small Perturbation Method for Scattering From Two-Layer Rough Surfaces

Publication Year: 2012, Page(s):3374 - 3382
Cited by:  Papers (24)
| | PDF (1309 KB) | HTML

Predictions of the fourth-order small perturbation method (SPM) are examined for scattering from two rough surfaces in a layered geometry. Cross-polarized backscatter, in particular, is emphasized because use of the fourth-order SPM is required to obtain this quantity. The formulation of the SPM fields and incoherent ensemble-averaged normalized radar cross sections (NRCSs) up to the third and the... View full abstract»

• ### Efficient and Reliable Simulation of Multicomponent Induction Logging Response in Horizontally Stratified Inhomogeneous TI Formations by Numerical Mode Matching Method

Publication Year: 2012, Page(s):3383 - 3395
Cited by:  Papers (11)
| | PDF (362 KB) | HTML

An efficient and reliable numerical mode matching (NMM) method is developed to simulate the responses of multicomponent induction logging (MCIL) in the horizontally layered inhomogeneous transversally isotropic (TI) formations with the borehole and the invasion zone. The computation of MCIL responses is entirely transformed into three axially symmetrical problems on the Fourier harmonic components... View full abstract»

• ### A Robust Preconditioned GMRES Method for Electromagnetic Scattering From Dielectric Rough Surfaces

Publication Year: 2012, Page(s):3396 - 3408
Cited by:  Papers (4)
| | PDF (1120 KB) | HTML

In this paper, we propose a generalized minimal residual procedure which is right preconditioned with the forward-backward method (FBM) for the analysis of electromagnetic scattering from 1-D dielectric randomly rough surfaces. The spectral acceleration (SA) technique is also combined to expedite the computation of matrix-vector product. For lossy dielectric, the Green's function is attenuative an... View full abstract»

• ### Multiple Endmember Unmixing of CHRIS/Proba Imagery for Mapping Impervious Surfaces in Urban and Suburban Environments

Publication Year: 2012, Page(s):3409 - 3424
Cited by:  Papers (23)
| | PDF (1800 KB) | HTML

In this paper, the potential of Compact High-Resolution Imaging Spectrometer (CHRIS)/Project for On-Board Autonomy data for impervious surface mapping is tested in a mixed urban/suburban/rural environment including part of the city of Leuven (Belgium) using multiple endmember unmixing. Various unmixing scenarios are compared, using different threshold values for the RMSE criterion applied t... View full abstract»

• ### Segmentation by Classification for Through-the-Wall Radar Imaging Using Polarization Signatures

Publication Year: 2012, Page(s):3425 - 3439
Cited by:  Papers (4)
| | PDF (1813 KB) | HTML

A scheme for target detection using segmentation by classification is proposed. The scheme is applied to through-the-wall microwave images obtained using frequency-domain back-projection in a wideband radar. We consider stationary targets where Doppler and change-detection-based techniques are inapplicable. The proposed scheme uses features from polarimetric images to segment and classify the imag... View full abstract»

• ### A Complete Processing Chain for Shadow Detection and Reconstruction in VHR Images

Publication Year: 2012, Page(s):3440 - 3452
Cited by:  Papers (19)
| | PDF (3233 KB) | HTML

The presence of shadows in very high resolution (VHR) images can represent a serious obstacle for their full exploitation. This paper proposes to face this problem as a whole through the proposal of a complete processing chain, which relies on various advanced image processing and pattern recognition tools. The first key point of the chain is that shadow areas are not only detected but also classi... View full abstract»

• ### A Bayesian Restoration Approach for Hyperspectral Images

Publication Year: 2012, Page(s):3453 - 3462
Cited by:  Papers (13)
| | PDF (809 KB) | HTML

In this paper, a Bayesian restoration technique for multiple observations of hyperspectral (HS) images is presented. As a prototype problem, we assume that a low-spatial-resolution HS observation and a high-spatial-resolution multispectral (MS) observation of the same scene are available. The proposed approach applies a restoration on the HS image and a joint fusion with the MS image, accounting f... View full abstract»

• ### Incremental Import Vector Machines for Classifying Hyperspectral Data

Publication Year: 2012, Page(s):3463 - 3473
Cited by:  Papers (15)
| | PDF (1355 KB) | HTML

In this paper, we propose an incremental learning strategy for import vector machines (IVM), which is a sparse kernel logistic regression approach. We use the procedure for the concept of self-training for sequential classification of hyperspectral data. The strategy comprises the inclusion of new training samples to increase the classification accuracy and the deletion of noninformative samples t... View full abstract»

• ### Information Fusion in the Redundant-Wavelet-Transform Domain for Noise-Robust Hyperspectral Classification

Publication Year: 2012, Page(s):3474 - 3486
Cited by:  Papers (17)
| | PDF (1927 KB) | HTML

Hyperspectral imagery comprises high-dimensional reflectance vectors representing the spectral response over a wide range of wavelengths per pixel in the image. The resulting high-dimensional feature spaces often result in statistically ill-conditioned class-conditional distributions. Conventional methods for alleviating this problem typically employ dimensionality reduction such as linear discrim... View full abstract»

• ### Lossless and Sufficient $Psi$ -Invariant Decomposition of Random Reciprocal Target

Publication Year: 2012, Page(s):3487 - 3501
Cited by:  Papers (12)
| | PDF (2702 KB) | HTML

The target coherency or covariance matrices are the main operators useful for characterizing the polarization transformation properties of radar target by modeling the depolarization effect. In this paper, a novel decomposition of the target coherency matrix is proposed, that is sufficient for representing the physical characteristics of the observed medium in term of a minimum set of orientation ... View full abstract»

• ### Detection of Moving Targets With Continuous-Wave Noise Radar: Theory and Measurements

Publication Year: 2012, Page(s):3502 - 3509
Cited by:  Papers (23)
| | PDF (664 KB) | HTML

This paper investigates a radar using a narrowband continuous noise waveform as an illuminating signal for the detection of moving targets. First, the theory of noise radar is presented, including the properties of the noise waveform and signal model. Next, the signal processing for noise radar is described, consisting of adaptive filtering for clutter removal, calculation of the crossambiguity fu... View full abstract»

• ### Interference Criterion for Coaxial-Fed Circular Dipole Array Antenna in a Borehole

Publication Year: 2012, Page(s):3510 - 3526
Cited by:  Papers (9)
| | PDF (2208 KB) | HTML

In this paper, we propose a coaxial-fed circular dipole array in a borehole (CFCAB) for directional borehole radar and present a design method for the CFCAB. In the CFCAB, a circular dipole array is arranged around a conducting cylinder. When a wave is incident on the antenna, we may divide the signals received at the antenna into two components. One is caused by the waves arriving at the antenna ... View full abstract»

• ### Detection and Estimation With RADARSAT-2 Moving-Object Detection Experiment Modes

Publication Year: 2012, Page(s):3527 - 3543
Cited by:  Papers (13)
| | PDF (1752 KB) | HTML

This paper describes in detail several multichannel variants of the famous displaced phase center antenna (DPCA) method suitable for spaceborne multichannel synthetic aperture radar ground moving target indication (GMTI), which has become available through the RADARSAT-2 moving-object detection experiment (MODEX). A flexible signal processing architecture was developed at Defense Research and Deve... 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