# IEEE Geoscience and Remote Sensing Letters

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Displaying Results 1 - 25 of 64
• ### [Front cover]

Publication Year: 2009, Page(s): C1
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• ### IEEE Geoscience and Remote Sensing Letters publication information

Publication Year: 2009, Page(s): C2
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Publication Year: 2009, Page(s):621 - 880
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• ### Introduction to the Special Issue on Airborne Field Campaigns for Soil Moisture

Publication Year: 2009, Page(s):623 - 624
Cited by:  Papers (4)
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• ### Improved Understanding of Soil Surface Roughness Parameterization for L-Band Passive Microwave Soil Moisture Retrieval

Publication Year: 2009, Page(s):625 - 629
Cited by:  Papers (28)
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Surface roughness parameterization plays an important role in soil moisture retrieval from passive microwave observations. This letter investigates the parameterization of surface roughness in the retrieval algorithm adopted by the Soil Moisture and Ocean Salinity mission, making use of experimental airborne and ground data from the National Airborne Field Experiment held in Australia in 2005. The... View full abstract»

• ### Parameterization of the Land Parameter Retrieval Model for L-Band Observations Using the NAFE'05 Data Set

Publication Year: 2009, Page(s):630 - 634
Cited by:  Papers (15)
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The Land Parameter Retrieval Model (LPRM) has been successfully applied to retrieve soil moisture from space-borne passive microwave observations at C-, X-, or Ku-band and high incidence angles (50deg-55deg). However, LPRM had never been applied to lower angles or to L-band observations. This letter describes the parameterization and performance of LPRM using aircraft and ground data fr... View full abstract»

• ### Assessing the SMOS Soil Moisture Retrieval Parameters With High-Resolution NAFE'06 Data

Publication Year: 2009, Page(s):635 - 639
Cited by:  Papers (17)
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The spatial and temporal invariance of Soil Moisture and Ocean Salinity (SMOS) forward model parameters for soil moisture retrieval was assessed at 1-km resolution on a diurnal basis with data from the National Airborne Field Experiment 2006. The approach used was to apply the SMOS default parameters uniformly over 27 1-km validation pixels, retrieve soil moisture from the airborne observations, a... View full abstract»

• ### An Assessment of QuikSCAT Ku-Band Scatterometer Data for Soil Moisture Sensitivity

Publication Year: 2009, Page(s):640 - 643
Cited by:  Papers (12)
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The QuikSCAT enhanced (2.225-km) backscattering product is investigated for sensitivity to changes in soil moisture and its potential for spatial disaggregation of Advanced Microwave Scanning Radiometer (AMSR-E) soil moisture. Specifically, an active-passive methodology based on temporal change detection is tested using data from the 2006 National Airborne Field Experiment data set. This campaign ... View full abstract»

• ### Combined Passive and Active Microwave Observations of Soil Moisture During CLASIC

Publication Year: 2009, Page(s):644 - 648
Cited by:  Papers (34)
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An important research direction in advancing higher spatial resolution and better accuracy in soil moisture remote sensing is the integration of active and passive microwave observations. In an effort to address this objective, an airborne instrument, the passive/active L-band sensor (PALS), was flown over two watersheds as part of the cloud and land surface interaction campaign (CLASIC) conducted... View full abstract»

• ### Using Passive Microwave Response to Soil Moisture Change for Soil Mapping: A Case Study for the Livingstone Creek Catchment

Publication Year: 2009, Page(s):649 - 652
Cited by:  Papers (3)
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The 46-km2 Livingstone Creek Catchment in southeastern Australia was flown with a passive microwave airborne remote sensor four times throughout the three-week National Airborne Field Experiment in 2006, with a spatial resolution of ~200 m. Both continuous and discrete measurements of soil moisture were taken to help with interpretation of results. The catchment was experiencing extreme... View full abstract»

• ### Orbit Accuracy Requirement for ABYSS: The Space Station Radar Altimeter to Map Global Bathymetry

Publication Year: 2009, Page(s):653 - 657
Cited by:  Patents (1)
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The Altimetric Bathymetry from Surface Slopes (ABYSS), which is the proposed science payload on the International Space Station (ISS), is a Johns Hopkins University Applied Physics Laboratory-developed flight-proved delay-Doppler phase-monopulse radar altimeter capable of measuring ocean surface slope in the 6-200-km half-wavelength frequency band range with an accuracy of 0.5 mu rad , with autono... View full abstract»

• ### ISAR Imaging of a Ship Target Using Product High-Order Matched-Phase Transform

Publication Year: 2009, Page(s):658 - 661
Cited by:  Papers (38)
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Inverse synthetic aperture radar (ISAR) imaging of a ship target is very important compared with the plane target, and the imaging condition of the ship target is more complicated than that of the plane target due to the complexity of the ship's movement. In this letter, the received signal of a ship target is modeled as a multicomponent cubic phase signal, and the product high-order matched-phase... View full abstract»

• ### Hypercomplex Quality Assessment of Multi/Hyperspectral Images

Publication Year: 2009, Page(s):662 - 665
Cited by:  Papers (27)
| | PDF (259 KB) | HTML

This letter presents a novel image quality index which extends the Universal Image Quality Index for monochrome images to multispectral and hyperspectral images through hypercomplex numbers. The proposed index is based on the computation of the hypercomplex correlation coefficient between the reference and tested images, which jointly measures spectral and spatial distortions. Experimental results... View full abstract»

• ### A New Numerical Method for Calculating Extrema of Received Power for Polarimetric SAR

Publication Year: 2009, Page(s):666 - 670
Cited by:  Papers (2)
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A numerical method called cross-step iteration is proposed to calculate the maximal/minimal received power for polarized imagery based on a target's Kennaugh matrix. This method is much more efficient than the systematic method, which searches for the extrema of received power by varying the polarization ellipse angles of receiving and transmitting polarizations. It is also more advantageous than ... View full abstract»

• ### Reconstruction of One-Dimensional Dielectric Scatterers Using Differential Evolution and Particle Swarm Optimization

Publication Year: 2009, Page(s):671 - 675
Cited by:  Papers (35)
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A comparison between differential evolution (DE) and particle swarm optimization (PSO) in solving 1-D small-scale inverse scattering problems is presented. In this comparison, the efficiency of both aforementioned optimization techniques is examined for permittivity and conductivity profile reconstruction problems. The comparison is carried out under the same conditions of initial population of ca... View full abstract»

• ### A Single-Pixel Imaging System for Remote Sensing by Two-Step Iterative Curvelet Thresholding

Publication Year: 2009, Page(s):676 - 680
Cited by:  Papers (13)
| | PDF (390 KB) | HTML

Recently, a new framework named compressed sensing (CS) for the simultaneous sampling and compression of signals has been applied for panoramic-view imaging in aerospace remote sensing. By CS, it is possible for us to take superresolution photographs using only one or a few pixels rather than a million pixels by conventional digital cameras. However, the most popular approach of satellite/airborne... View full abstract»

• ### An Accurate Strategy for 3-D Ground-Based SAR Imaging

Publication Year: 2009, Page(s):681 - 685
Cited by:  Papers (1)
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In this letter, an analytical description of the 2-D and 3-D imaging of ground-based synthetic aperture radar data is given. The ability of the 3-D imaging to separate targets along the elevation direction will also be shown, thus allowing their complete localization in space. The validation of the proposed method is done by exploiting simulated data. View full abstract»

• ### On the Use of the Adaptive Integral Method in the Presence of Perfectly Conducting Perpendicular Planes

Publication Year: 2009, Page(s):686 - 688
Cited by:  Papers (1)
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The adaptive integral method (AIM) is widely used to solve electromagnetic scattering and radiation problems involving large objects in free space. In the presence of one or more perfectly conducting perpendicular planes, the AIM formulation can be applied by exploiting the principle of images at the cost of increasing the number of fast Fourier transforms evaluated in the method. In this letter, ... View full abstract»

• ### Superresolution Reconstruction of Multispectral Data for Improved Image Classification

Publication Year: 2009, Page(s):689 - 693
Cited by:  Papers (10)
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In this letter, the application of superresolution (SR) techniques to multispectral image clustering and classification is investigated and tested using satellite data. A set of multispectral images with better spatial resolution is obtained after an SR technique is applied to several data sets recorded within a short period over a study area. Improved clustering and classification performance is ... View full abstract»

• ### Machine Learning and Bias Correction of MODIS Aerosol Optical Depth

Publication Year: 2009, Page(s):694 - 698
Cited by:  Papers (19)
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Machine-learning approaches (neural networks and support vector machines) are used to explore the reasons for a persistent bias between aerosol optical depth (AOD) retrieved from the MODerate resolution Imaging Spectroradiometer (MODIS) and the accurate ground-based Aerosol Robotic Network. While this bias falls within the expected uncertainty of the MODIS algorithms, there is room for algorithm i... View full abstract»

• ### An Optimization Procedure of the Lagrange Multiplier Method for Polarimetric Power Optimization

Publication Year: 2009, Page(s):699 - 702
Cited by:  Papers (3)
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The Lagrange multiplier method is one of the basic optimization procedures to find the optimum polarizations for the incoherent scattering case. This letter proves for the first time that a fixed relationship exists between the optimum polarization and the Lagrange multiplier. Then, an optimization procedure is proposed to simplify the computational complexity of the Lagrange multiplier method. To... View full abstract»

• ### Multi$^{3}$Scat—A Helicopter-Based Scatterometer for Snow-Cover and Sea-Ice Investigations

Publication Year: 2009, Page(s):703 - 707
Cited by:  Papers (4)
| | PDF (816 KB) | HTML

A helicopter-based Doppler scatterometer (Multi3Scat) is described. It allows simultaneous measurements of the surface radar backscatter at five different frequencies at co- and cross-polarization at incidence angles of 20deg -65deg from an altitude of 30-300 m. Video and infrared (IR) cameras simultaneously sense the surface in the scatterometers' footprint. The M... View full abstract»

• ### Evaluation of the Surface Temperature Variation With Surface Settings on the Urban Heat Island in Seoul, Korea, Using Landsat-7 ETM+ and SPOT

Publication Year: 2009, Page(s):708 - 712
Cited by:  Papers (6)
| | PDF (955 KB) | HTML

Spectral satellite imagery has been frequently used to identify surface features of the Earth. The moderate-resolution images of Landsat are typically useful to extract land cover and land use classification and surface temperature for large areas. High-resolution images such as from the Satellite Pour l'Observation de la Terre (SPOT) also provide highly detailed surface cover for regional and loc... View full abstract»

• ### Segmented Principal Component Analysis for Parallel Compression of Hyperspectral Imagery

Publication Year: 2009, Page(s):713 - 717
Cited by:  Papers (25)
| | PDF (277 KB) | HTML

Principal component analysis (PCA) is widely used for spectral decorrelation in the JPEG2000 compression of hyperspectral imagery. However, due to the data-dependent nature of principal components, the principal component transform matrix is stored in the JPEG2000 bitstream, constituting an overhead that is often negligible if the spatial size of the image is large. However, in parallel compressio... View full abstract»

• ### Nondestructive Sensor Using Microwaves From Laser Plasma by Subnanosecond Laser Pulses

Publication Year: 2009, Page(s):718 - 722
Cited by:  Papers (8)
| | PDF (838 KB) | HTML

Conventional ground-penetrating radar (GPR) requires large-aperture antennas or long-span measurements to survey a remote location precisely. We propose a laser-driven GPR (LGPR) as a new detection method. LGPR uses microwaves from laser-produced plasmas as remote transmitters and can survey a remote location using a compact instrument. We performed numerical simulations to investigate the radiati... 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
Universidade Federal de Alagoas