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# IEEE Transactions on Geoscience and Remote Sensing

## Issue 4  Part 2 • April 2008

This issue contains several parts.Go to:  Part 1

## Filter Results

Displaying Results 1 - 25 of 28
• ### [Front cover]

Publication Year: 2008, Page(s): C1
| PDF (600 KB)
• ### IEEE Transactions on Geoscience and Remote Sensing publication information

Publication Year: 2008, Page(s): C2
| PDF (40 KB)

Publication Year: 2008, Page(s):1037 - 1038
| PDF (39 KB)
• ### Assessment of Radar Signal Attenuation Caused by the Melting Hydrometeor Layer

Publication Year: 2008, Page(s):1039 - 1047
Cited by:  Papers (33)
| | PDF (651 KB) | HTML

Attenuation of radar signals by melting hydrometeors is studied using modeling approaches and comparisons of simulated and observed results. In spite that the melting layer in precipitating systems is usually relatively thin ( ~ 500 m), this attenuation can be substantial at X-band frequencies for low elevation angles and at millimeter-wavelength frequencies that are used by the U.S. Department of... View full abstract»

• ### Signal Processing Issues for the Exploitation of Pulse-to-Pulse Encoding SAR Transponders

Publication Year: 2008, Page(s):1048 - 1057
Cited by:  Papers (2)
| | PDF (762 KB) | HTML

Synthetic aperture radar signal processing issues related to the exploitation of a pulse-to-pulse encoding transponder using pseudorandom codes discussed analytically. Namely the focusing algorithm, the code synchronization procedure and the properties of the code induced gain against non-encoding point scatterers and distributed ones. A time-domain processing algorithm and a code synchronization ... View full abstract»

• ### Accuracy of the $K$-Distribution Regression Model for Forest Biomass Estimation by High-Resolution Polarimetric SAR: Comparison of Model Estimation and Field Data

Publication Year: 2008, Page(s):1058 - 1064
Cited by:  Papers (16)
| | PDF (469 KB) | HTML

In our previous regression model for estimating forest biomass, it was shown that non-Gaussian amplitude fluctuations in high-resolution polarimetric synthetic aperture radar (SAR) data of coniferous forests can accurately be described by the -distribution and that the order parameter of the -distribution can be useful in estimating the tree biomass of coniferous forests from L-band cross-polariza... View full abstract»

• ### Estimation of the Temporal Evolution of the Deformation Using Airborne Differential SAR Interferometry

Publication Year: 2008, Page(s):1065 - 1078
Cited by:  Papers (22)
| | PDF (1718 KB) | HTML

This paper presents airborne differential synthetic aperture radar (SAR) interferometry results using a stack of 14 images, which were acquired by the Experimental SAR system of the German Aerospace Center (DLR) during a time span of 2.5 h. An advanced differential technique is used to retrieve the error in the digital elevation model and the temporal evolution of the deformation for every coheren... View full abstract»

• ### High-Resolution SAR Interferometry: Estimation of Local Frequencies in the Context of Alpine Glaciers

Publication Year: 2008, Page(s):1079 - 1090
Cited by:  Papers (12)
| | PDF (1612 KB) | HTML

Synthetic aperture radar (SAR) interferometric data offer the opportunity to measure temperate glacier surface topography and displacement. The increase of the resolution provided by the most recent SAR systems has some critical implications. For instance, a reliable estimate of the phase gradient can only be achieved by using interferogram local frequencies. In this paper, an original two-step me... View full abstract»

• ### A Study of Fresnel Scattered Fields for Ellipsoidal and Elliptic-Disk-Shaped Scatterers

Publication Year: 2008, Page(s):1091 - 1103
Cited by:  Papers (4)
| | PDF (509 KB) | HTML

The study of scattered fields from nonspherical scatterers is becoming an important subject particularly in the area of theoretical modeling of microwave backscatter from vegetation. The generalized Rayleigh-Gans approximation has been widely used in the calculation of scattered fields from scatterers where at least one of its dimensions is comparably smaller than the wavelength. In such calculati... View full abstract»

• ### Effects of Background Removal in Linear Inverse Scattering

Publication Year: 2008, Page(s):1104 - 1114
Cited by:  Papers (25)
| | PDF (1059 KB) | HTML

This paper deals with the effect of the background removal procedure on ground-penetrating radar data in the framework of a Born-based inverse-scattering solution approach for a scalar 2-D geometry. The theoretical investigation is performed by resorting to diffraction tomography reasoning, and then it is numerically confirmed thanks to the singular value decomposition of the operator that connect... View full abstract»

• ### Space–Frequency Ultrawideband Time-Reversal Imaging

Publication Year: 2008, Page(s):1115 - 1124
Cited by:  Papers (44)  |  Patents (12)
| | PDF (1340 KB) | HTML

We introduce time-reversal ultrawideband (UWB) imaging functionals based on the simultaneous utilization of spatial and UWB frequency data acquired by limited-aspect antenna arrays. The targets are discrete scatterers embedded in homogeneous or continuous random inhomogeneous media. Singular value decomposition is applied to space-frequency multistatic scattering data matrices indexed by sensor lo... View full abstract»

• ### Sea-Surface Current Features Observed by Doppler Radar

Publication Year: 2008, Page(s):1125 - 1133
Cited by:  Papers (11)
| | PDF (1119 KB) | HTML

A coherent X-band radar was operated from the shore to measure velocities at the sea surface. The test site at a tidal inlet (Lister Tief) in the German Bight lay protected from swell and long wind waves. A vertical-vertical antenna was used to obtain the backscattered radar signal caused by Bragg scattering. To cover a sector of the circle, the antenna was rotated in 1Dstrok steps. At ... View full abstract»

• ### Numerical Modeling of Multicomponent Induction Well-Logging Tools in the Cylindrically Stratified Anisotropic Media

Publication Year: 2008, Page(s):1134 - 1147
Cited by:  Papers (22)
| | PDF (627 KB) | HTML

In this paper, we present an efficient algorithm to simulate the response of a multicomponent induction well-logging (MCIL) tool in a cylindrically layered anisotropic formation (transversely isotropic media). The tool consists of three pairs of orthogonally arranged transmitter-receiver coils for measuring the magnetic field around a borehole for oil and gas exploration. First, we will derive the... View full abstract»

• ### Computation of Triaxial Induction Logging Tools in Layered Anisotropic Dipping Formations

Publication Year: 2008, Page(s):1148 - 1163
Cited by:  Papers (28)
| | PDF (638 KB) | HTML

In order to interpret the logging data from triaxial induction tools, inversion technology has been adopted. To make the inversion process reasonably fast, a fast forward method must be developed. Numerical methods, such as the finite element method and finite difference method, are flexible but slow for inversion purposes. In this paper, an analytic method is developed to simulate induction tools... View full abstract»

• ### Electromagnetic Induction From Highly Permeable and Conductive Ellipsoids Under Arbitrary Excitation: Application to the Detection of Unexploded Ordnances

Publication Year: 2008, Page(s):1164 - 1176
Cited by:  Papers (12)
| | PDF (851 KB) | HTML

The secondary field produced by 3-D highly permeable and conductive objects is computed in the electromagnetic induction regime, with the purpose of modeling unexploded ordnances (UXOs) and surrounding clutter. The analytical formulation is based on the ellipsoidal coordinate system that is able to model real 3-D geometries as opposed to bodies of revolutions like within a spheroidal approach. At ... View full abstract»

• ### An Investigation of Using the Spectral Characteristics From Ground Penetrating Radar for Landmine/Clutter Discrimination

Publication Year: 2008, Page(s):1177 - 1191
Cited by:  Papers (39)
| | PDF (1005 KB) | HTML

Ground penetrating radar (GPR)-based discrimination of landmines from clutter is known to be challenging due to the wide variability of possible clutter (e.g., rocks, roots, and general soil heterogeneity). This paper discusses the use of GPR frequency-domain spectral features to improve the detection of weak-scattering plastic mines and to reduce the number of false alarms resulting from clutter.... View full abstract»

• ### A Multiarray Tomographic Approach for Through-Wall Imaging

Publication Year: 2008, Page(s):1192 - 1199
Cited by:  Papers (49)
| | PDF (827 KB) | HTML

A through-wall imaging problem for a 2-D scalar geometry is addressed. It is cast as an inverse scattering problem and tackled under the linear Born model by means of the truncated singular value decomposition inversion scheme. A multiarray-based inversion strategy is considered. In particular, first the data collected by each single array are processed to obtain different tomographic images of th... View full abstract»

• ### Fire Detection and Fire Characterization Over Africa Using Meteosat SEVIRI

Publication Year: 2008, Page(s):1200 - 1218
Cited by:  Papers (62)
| | PDF (1919 KB) | HTML

Africa is the single largest continental source of biomass burning emissions and one where emission source strengths are characterized by strong diurnal and seasonal cycles. This paper describes the development of a fire detection and characterization algorithm for generating high temporal resolution African pyrogenic emission data sets using data from the geostationary spinning enhanced visible a... View full abstract»

• ### A Stationary Wavelet-Domain Wiener Filter for Correlated Speckle

Publication Year: 2008, Page(s):1219 - 1230
Cited by:  Papers (33)
| | PDF (1617 KB) | HTML

In this paper, we develop a Wiener-type speckle filter that operates in the stationary wavelet domain. We denote it as the stationary wavelet-domain Wiener (SWW) speckle filter. We assume that both the speckle-free image and the speckle contribution have spatial correlations and utilize well-established models for the power density spectrum of the radar cross section to estima... View full abstract»

• ### An Active Learning Approach to Hyperspectral Data Classification

Publication Year: 2008, Page(s):1231 - 1242
Cited by:  Papers (138)  |  Patents (1)
| | PDF (1422 KB) | HTML

Obtaining training data for land cover classification using remotely sensed data is time consuming and expensive especially for relatively inaccessible locations. Therefore, designing classifiers that use as few labeled data points as possible is highly desirable. Existing approaches typically make use of small-sample techniques and semisupervision to deal with the lack of labeled data. In this pa... View full abstract»

• ### Multidimensional Probability Density Function Matching for Preprocessing of Multitemporal Remote Sensing Images

Publication Year: 2008, Page(s):1243 - 1252
Cited by:  Papers (9)
| | PDF (712 KB) | HTML

This paper addresses the problem of matching the statistical properties of the distributions of two (or more) multi-spectral remote sensing images acquired on the same geographical area at different times. An N-D probability density function (pdf) matching technique for the preprocessing of multitemporal images is introduced in the remote sensing domain by defining and analyzing three important ap... View full abstract»

• ### Landslide Possibility Mapping Using Fuzzy Approaches

Publication Year: 2008, Page(s):1253 - 1265
Cited by:  Papers (31)
| | PDF (891 KB) | HTML

This paper presents a fuzzy expert system for the creation of landslide possibility maps using change of land-use data from Earth observation, as well as historical, rainfall, and earthquake data stored in a geographic information system, as input. The difference with other systems is in the use of change (differential) input data. The method is tested with 16 documented landslides. The fuzzy neur... View full abstract»

• ### A High-Performance Feature-Matching Method for Image Registration by Combining Spatial and Similarity Information

Publication Year: 2008, Page(s):1266 - 1277
Cited by:  Papers (36)
| | PDF (751 KB) | HTML

A crucial problem that involves feature-based image registration algorithms is how to reliably establish the correspondence between the features detected in the sensed image and those detected in the reference image. Generally, most existing methods only use spatial relations or feature similarity, or a simple combination of them, to solve this problem, and all have some limitations. In this paper... View full abstract»

• ### Corrections to “Calibration of Linearly Polarized Polarimetric SAR Data Subject to Faraday Rotation” [Aug 04 1617-1624]

Publication Year: 2008, Page(s): 1278
Cited by:  Papers (2)
| | PDF (45 KB) | HTML

In the above titled paper (ibid., vol. 42, no. 8, pp. 1617-1624, Aug 04), Equation (15) has an error. Corrections are presented here. View full abstract»

• ### Response to “Corrections to ‘Calibration of Linearly Polarized Polarimetric SAR Data Subject to Faraday Rotation’” [orig. paper Aug 04 1617-1624]

Publication Year: 2008, Page(s): 1279
Cited by:  Papers (3)
| | PDF (44 KB) | HTML

Provides a response to the corrections submitted (vol. 46, no. 4, p. 1278, Apr 08) to the original article. 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

## Meet Our Editors

Editor-in-Chief
Simon H. Yueh
Jet Propulsion Laboratory