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# IEEE Geoscience and Remote Sensing Letters

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Displaying Results 1 - 25 of 45
• ### [Front cover]

Publication Year: 2011, Page(s): C1
| PDF (620 KB)
• ### IEEE Geoscience and Remote Sensing Letters publication information

Publication Year: 2011, Page(s): C2
| PDF (41 KB)

Publication Year: 2011, Page(s):1 - 2
| PDF (55 KB)
• ### Editorial [publication schedules]

Publication Year: 2011, Page(s): 3
| PDF (87 KB) | HTML
• ### On the Convergence of N-FINDR and Related Algorithms: To Iterate or Not to Iterate?

Publication Year: 2011, Page(s):4 - 8
Cited by:  Papers (10)
| | PDF (294 KB) | HTML

A popular algorithm for unmixing hyperspectral data, namely, Winter's N-FINDR algorithm, is frequently used to benchmark other algorithms or as the basis for new algorithms. The interpretations of this algorithm within the literature are not consistent, and some of these differences have significant impact on the convergence of the algorithm. Despite this, the differences in implementation have no... View full abstract»

• ### Data-Adaptive Prediction of Sea-Surface Temperature in the Arabian Sea

Publication Year: 2011, Page(s):9 - 13
Cited by:  Papers (5)
| | PDF (176 KB) | HTML

A nonlinear data-adaptive approach known by the name of genetic algorithm has been proposed for predicting satellite-observed sea-surface temperature (SST) in the Arabian Sea. A preliminary empirical orthogonal function (EOF) analysis has been carried out to separate the temporal variability from the spatial variability, and the algorithm has been applied to the time series of the principal compon... View full abstract»

• ### Semiempirical Calibration of the Integral Equation Model for SAR Data in C-Band and Cross Polarization Using Radar Images and Field Measurements

Publication Year: 2011, Page(s):14 - 18
Cited by:  Papers (23)
| | PDF (181 KB) | HTML

The estimation of surface soil parameters (moisture and roughness) from synthetic aperture radar (SAR) images requires the use of well-calibrated backscattering models. The objective of this letter is to extend the semiempirical calibration of the backscattering integral equation model (IEM) initially proposed by Baghdadi for HH and VV polarizations to HV polarization. The approach consisted in re... View full abstract»

• ### Global CALIPSO Observations of Aerosol Changes Near Clouds

Publication Year: 2011, Page(s):19 - 23
Cited by:  Papers (18)
| | PDF (703 KB) | HTML

Several recent studies have found that clouds are surrounded by a transition zone of rapidly changing aerosol optical properties and particle size. Characterizing this transition zone is important for better understanding aerosol-cloud interactions and aerosol radiative effects, and also for improving satellite retrievals of aerosol properties. This letter presents a statistical analysis of a mont... View full abstract»

• ### Comparison of Backscattering Models at L-Band for Growing Corn

Publication Year: 2011, Page(s):24 - 28
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The impact of incoherent and coherent formulations on estimates of terrain backscatter (σterrain0) at L-band for a growing season of corn is examined. The average root mean square difference (RMSD) between the two formulations over the growing season ranged between 3-4 dB, with higher RMSDs at HH polarization (pol), indicating the presence of coherent effects. In the i... View full abstract»

• ### Prelaunch Calibration of Microwave Humidity Sounder on China's FY-3A Meteorological Satellite

Publication Year: 2011, Page(s):29 - 33
Cited by:  Papers (6)
| | PDF (691 KB) | HTML

China's Feng Yun-3A (FY-3A) meteorological satellite is a second-generation polar-orbiting meteorological satellite launched in May 2008. The Microwave Humidity Sounder (MWHS) is the main payload, designed for atmospheric humidity sounding. Before the launch of MWHS, a series of experiments was conducted in a thermal/vacuum (T/V) chamber. This letter describes the MWHS T/V calibration, in which th... View full abstract»

• ### Mapping Three-Dimensional Surface Deformation by Combining Multiple-Aperture Interferometry and Conventional Interferometry: Application to the June 2007 Eruption of Kilauea Volcano, Hawaii

Publication Year: 2011, Page(s):34 - 38
Cited by:  Papers (44)
| | PDF (546 KB) | HTML

Surface deformation caused by an intrusion and small eruption during June 17-19, 2007, along the East Rift Zone of Kilauea Volcano, Hawaii, was three-dimensionally reconstructed from radar interferograms acquired by the Advanced Land Observing Satellite (ALOS) phased-array type L-band synthetic aperture radar (SAR) (PALSAR) instrument. To retrieve the 3-D surface deformation, a method that combine... View full abstract»

• ### A Novel Radar Waveform for Monostatic Ionosonde

Publication Year: 2011, Page(s):39 - 43
Cited by:  Papers (3)
| | PDF (638 KB) | HTML

Monostatic radar, whether using interpulse or intrapulse coded pulse trains, will suffer from the blind zones caused by eclipsing. This letter proposes a novel biphase interpulse coded radar waveform using diverse Pulse Repetition Intervals (PRIs) instead of a consistent PRI within each coherent processing interval (CPI). This waveform can achieve long unambiguous range, high-range resolution and ... View full abstract»

• ### Fast Raw-Signal Simulation of Extended Scenes for Missile-Borne SAR With Constant Acceleration

Publication Year: 2011, Page(s):44 - 48
Cited by:  Papers (12)
| | PDF (378 KB) | HTML

Fast raw-signal simulation is of considerable value for missile-borne synthetic aperture radar (SAR) algorithm development. On the basis of the two-dimensional (2-D) Fourier simulation method for stripmap SAR, we present a fast echo simulation method suitable for missile-borne SAR diving with constant acceleration. The analytical expression for the 2-D signal spectrum is derived and then converted... View full abstract»

• ### X-, C-, and L-Band DInSAR Investigation of the April 6, 2009, Abruzzi Earthquake

Publication Year: 2011, Page(s):49 - 53
Cited by:  Papers (22)
| | PDF (763 KB) | HTML

This letter compares the coseismic deformation maps obtained from different synthetic aperture radar (SAR) sensors using the well-known differential SAR interferometry technique. In particular, four deformation maps have been obtained from X-, C-, and L-band SAR sensors onboard COSMO-SkyMed, Envisat, and ALOS satellite missions correspondingly. The test case is the April 6,2009, earthquake (M... View full abstract»

• ### Combination of Direct and Double-Bounce Ground Responses in the Homogeneous Oriented Volume Over Ground Model

Publication Year: 2011, Page(s):54 - 58
Cited by:  Papers (9)
| | PDF (322 KB) | HTML

Complex interferometric coherence expressions for the homogeneous (random or oriented) volume-over-ground model are originally derived in a simplified way by neglecting one of the two possible contributions of the ground response: direct return from the ground surface or double-bounce interaction with stems or trunks. The influence of these depends on both system and scene parameters, and in many ... View full abstract»

• ### Analysis of Brillouin Precursor Propagation Through Foliage for Digital Sequences of Pulses

Publication Year: 2011, Page(s):59 - 63
Cited by:  Papers (20)  |  Patents (1)
| | PDF (774 KB) | HTML

In this letter, we investigate the propagation of Brillouin precursors through dispersive foliage media, using leafy vegetation dielectric models proposed by Fung-Ulaby, El Rayes-Ulaby, Brown-Curry-Ding, Maetzler, and Pearce. A fast-Fourier-transform-based formulation is used to analyze the peak amplitude decay and pulse broadening effect (or effective oscillation frequency) related to the precurs... View full abstract»

• ### Statistical Combination of Spatial Interpolation and Multispectral Remote Sensing for Shallow Water Bathymetry

Publication Year: 2011, Page(s):64 - 67
Cited by:  Papers (9)
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There is often a need for making a high-resolution or a complete bathymetric map based on sparse point measurements of water depth. Well-known feasible methods for this problem include spatial interpolation and passive remote sensing using readily available multispectral imagery, whose accuracies depend strongly on geometric and optical conditions, respectively. For a more accurate and robust wate... View full abstract»

• ### Radar Imaging Simulation for Urban Structures

Publication Year: 2011, Page(s):68 - 72
Cited by:  Papers (12)
| | PDF (293 KB) | HTML

With the recent advent of very high resolution (VHR) spaceborne synthetic aperture radar (SAR) sensors such as TerraSAR-X and COSMO-SkyMed, the potential to use SAR simulators is increasing. In this letter, we propose a novel radar imaging simulator that is relatively simple to implement and that finds a balance between accuracy and efficiency. The main goal of the proposed method is to obtain a p... View full abstract»

• ### Automatic Urban Water-Body Detection and Segmentation From Sparse ALSM Data via Spatially Constrained Model-Driven Clustering

Publication Year: 2011, Page(s):73 - 77
Cited by:  Papers (6)
| | PDF (756 KB) | HTML

Identifying hydrological features is important for urban planning and disaster assessment. Data spatial resolution poses challenges in automatic processing. In this letter, we present a novel spatially constrained model-driven clustering method that automatically detects and delineates water bodies in an urban area using airborne laser swath mapping (ALSM) data and imagery. Our method analyzes the... View full abstract»

• ### Frequency Estimation of Human Presence Detection Signals From a Scanning-Beam Millimeter-Wave Correlation Radiometer

Publication Year: 2011, Page(s):78 - 82
Cited by:  Papers (1)
| | PDF (389 KB) | HTML

The scanning-beam millimeter-wave correlation radiometer has recently been applied to human presence detection and classification. The natural frequency of the scanning-beam correlation radiometer signal, called the fringe frequency, results from human presence in the scanning beam and must be known in order to filter the signal and provide the best possible radiometric sensitivity. This letter pr... View full abstract»

• ### Conflation of Vector Buildings With Imagery

Publication Year: 2011, Page(s):83 - 87
Cited by:  Papers (2)
| | PDF (271 KB) | HTML

This letter presents a system to solve the vector-to-imagery building conflation problem. To drive the system, structure outlines in high-resolution images are extracted via a shape-driven level set scheme. Shape and relative position features are then computed for the image-extracted buildings and for vector graphics buildings from a geospatial information system (GIS). These two features are use... View full abstract»

• ### Focusing of Tandem Bistatic-Configuration Data With Range Migration Algorithm

Publication Year: 2011, Page(s):88 - 92
Cited by:  Papers (10)
| | PDF (436 KB) | HTML

A bistatic range migration algorithm (RMA) based on an exact analytical bistatic point-target (PT) spectrum in the tandem configuration is proposed in this letter. For the conventional geometry-based bistatic formula method, the derived spectrum is only a quasi-analytical one because a variable called half-quasi-bistatic angle (HQBA) is not exactly analytically expressed. The key step of the propo... View full abstract»

• ### $k$-Segments-Based Geometric Modeling of VLS Scan Lines

Publication Year: 2011, Page(s):93 - 97
Cited by:  Papers (10)
| | PDF (313 KB) | HTML

A novel k-segments-based 2-D geometric modeling schematic is proposed for characterizing the scan lines of vehicle-based laser scanning (VLS) with just a few geometric primitives. VLS has been developing quickly as a new research focus recently, but the relevant data processing techniques lag behind the system establishment due to the associated huge standwise point clouds collected in a real 3-D ... View full abstract»

• ### A Comparative Analysis of Krylov Solvers for Three-Dimensional Simulations of Borehole Sensors

Publication Year: 2011, Page(s):98 - 102
Cited by:  Papers (5)
| | PDF (438 KB) | HTML

We perform a comparative analysis of three Krylov subspace methods, viz., the restarted generalized minimum residual (RGMRES), the conjugate gradient squared (CGS), and the stabilized biconjugate gradient (Bi-CGSTAB), for solving large non-Hermitian sparse linear systems arising from the 3-D finite-volume modeling of electromagnetic borehole sensors in complex earth formations. Incomplete LU facto... View full abstract»

• ### Application of Total-Variation-Based Curvelet Shrinkage for Three-Dimensional Seismic Data Denoising

Publication Year: 2011, Page(s):103 - 107
Cited by:  Papers (13)
| | PDF (495 KB) | HTML

Transform-based denoising methods are popularly used in image and signal processing, including seismic data processing. However, they often suffer from unwanted artifacts, e.g., nonsmooth edges and pesudo-Gibbs phenomena. A total variation (TV) minimization technique has the ability to suppress these artifacts, particularly in the vicinity of discontinuities. In this letter, we employ the almost o... View full abstract»

## Aims & Scope

 IEEE Geoscience and Remote Sensing Letters (GRSL) is a monthly publication for short papers (maximum length 5 pages) addressing new ideas and formative concepts in remote sensing as well as important new and timely results and concepts.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Alejandro C. Frery