# IEEE Geoscience and Remote Sensing Letters

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Displaying Results 1 - 25 of 40
• ### [Front cover]

Publication Year: 2018, Page(s): C1
| PDF (551 KB)
• ### IEEE Geoscience and Remote Sensing Letters publication information

Publication Year: 2018, Page(s): C2
| PDF (90 KB)

Publication Year: 2018, Page(s):801 - 802
| PDF (315 KB)
• ### Use of Hazard Function for Signal Detection on Ionograms

Publication Year: 2018, Page(s):803 - 807
| | PDF (3300 KB) | HTML

This letter considers a new method for sample detection of ionospheric propagation modes at the receiver output of a chirp ionosonde. The method is based on the use of the hazard function. Within the framework of the two-component mixture model, it is shown that the hazard function can be used to detect samples of the second component in the mixture when the corresponding fraction of samples in th... View full abstract»

• ### Warm Season Satellite Precipitation Biases for Different Cloud Types Over Western North Pacific

Publication Year: 2018, Page(s):808 - 812
| | PDF (1906 KB) | HTML Media

Two along-track (level 2) satellite precipitation retrievals by the Global Precipitation Measurement (GPM) Microwave Imager (GMI) and the Dual Frequency Precipitation Radar Ku-band (DPR-Ku) and two multisatellite precipitation products, global satellite mapping of precipitation (GSMaP) and Integrated Multisatellite Retrievals for GPM (IMERG), are intercompared for different cloud types during warm... View full abstract»

• ### Learning a River Network Extractor Using an Adaptive Loss Function

Publication Year: 2018, Page(s):813 - 817
| | PDF (12606 KB)

We have created a deep-learning-based river network extraction model, called DeepRiver, that learns the characteristics of rivers from synthetic data and generalizes them to natural data. To train this model, we created a very large database of exemplary synthetic local channel segments, including channel intersections. Our model uses a special loss function that automatically shifts the focus to ... View full abstract»

• ### The On-Orbit Noncloud-Covered Water Region Extraction for Ship Detection Based on Relative Spectral Reflectance

Publication Year: 2018, Page(s):818 - 822
| | PDF (994 KB) | HTML

For most of the existing noncloud-covered water region (NCC water region) extraction methods, they are designed for on-ground ship detection. However, these methods could result in low accuracy and expensive computational costs. In this letter, an accurate and fast NCC water region extraction method is proposed for the typical on-orbit ship detection system with limited computing resources availab... View full abstract»

• ### Instantaneous Rate of Ice Mass Changes in Antarctica Observed by Satellite Gravimetry

Publication Year: 2018, Page(s):823 - 827
| | PDF (946 KB) | HTML

A method for computing instantaneous rate of the Antarctica ice sheet (AIS) mass changes is proposed in this letter. The method combines the ensemble empirical mode decomposition (EEMD) and cubic spline smoothing (CSS). First, EEMD is used to extract the nonlinear trend from the time series of the AIS mass changes observed by satellite gravimetry, and then CSS is used to fit the nonlinear trend. T... View full abstract»

• ### Direct Inversion Algorithm for Shear Velocity Profiling in Dipole Acoustic Borehole Measurements

Publication Year: 2018, Page(s):828 - 832
| | PDF (1191 KB) | HTML

The evaluation of radial heterogeneities within formations plays an important role in oil and gas exploration and exploitation. Dipole acoustic well logging data are widely used to invert radial shear velocity profiles, for which efficient dispersion analysis algorithms and radial profile inversion algorithms constitute fundamental issues. A direct parametric inversion method is, therefore, propos... View full abstract»

• ### A New Model for the Distribution of Observable Earthquake Magnitudes and Applications to $b$ -Value Estimation

Publication Year: 2018, Page(s):833 - 837
| | PDF (1095 KB) | HTML

The $b$ -value in the Gutenberg–Richter (GR) law contains information that is essential for evaluating earthquake hazard and predicting the occurrence of large earthquakes. Estimates of $b$ are often based on seismic events whose magnitude exceed a... View full abstract»

• ### Boundary Indicator for Aspect Limited Sensing of Hidden Dielectric Objects

Publication Year: 2018, Page(s):838 - 842
| | PDF (868 KB) | HTML

This letter addresses the problem of reconstructing the geometrical features, i.e., location, shape, and size of targets embedded into a nonaccessible region. In particular, an approach recently introduced for the case of free space and full aspect measurements is extended, discussed, and validated for the more realistic and challenging case of data collected under “aspect limited” m... View full abstract»

• ### New Method for Detecting Risk of Tunnel Water-Induced Disasters Using Magnetic Resonance Sounding

Publication Year: 2018, Page(s):843 - 847
| | PDF (971 KB) | HTML

A new method for detecting risk of tunnel water-induced disasters using magnetic resonance sounding (MRS) is proposed in this letter. The method utilizes magnetic resonance signals that are generated directly from hydrogen protons to achieve the purpose of detecting risk of tunnel water-induced disasters directly and quantitatively. This letter evaluates the potential of this method based on a sys... View full abstract»

• ### Destriping Remote Sensing Image via Low-Rank Approximation and Nonlocal Total Variation

Publication Year: 2018, Page(s):848 - 852
| | PDF (2123 KB) | HTML

Stripe noise removal is a fundamental problem in remote sensing image processing. Many efforts have been made to resolve this problem. Recently, a state-of-the-art method was proposed from image-decomposition perspective. This method argued that the stripe and clear image can be simultaneously estimated by modeling the directional structure of stripes and the local smoothness of remote sensing ima... View full abstract»

• ### An Analytical Error Model for Spaceborne SAR Multichannel Azimuth Reconstruction

Publication Year: 2018, Page(s):853 - 857
| | PDF (1081 KB) | HTML

In the context of spaceborne synthetic aperture radar (SAR) for remote sensing, multichannel system architectures coupled with digital beamforming techniques are deemed a necessary technological advancement to fulfill the requirements for near-future spaceborne radar missions. Calibration of such systems is an important topic, since channel imbalances may lead to considerable degradation of their ... View full abstract»

• ### A Range Perturbation Approach for Correcting Spatially Variant Range Envelope in Diving Highly Squinted SAR With Nonlinear Trajectory

Publication Year: 2018, Page(s):858 - 862
| | PDF (1362 KB) | HTML

The image processing for diving highly squinted synthetic aperture radar (SAR) mounted on a maneuvering platform with nonlinear trajectory is challenging due to the spatial variance in the range envelope along azimuth, which is caused by the inherent range dependence of squint angle, platform acceleration, and the range cell migration (RCM). In order to deal with the spatial variance that leads to... View full abstract»

• ### An I/Q-Channel Modeling Maximum Likelihood Super-Resolution Imaging Method for Forward-Looking Scanning Radar

Publication Year: 2018, Page(s):863 - 867
| | PDF (5977 KB) | HTML

Deconvolution techniques provide efficient implementations for super-resolution imaging for forward-looking scanning radar. However, deconvolution is normally an ill-posed problem, and the solution is extremely sensitive to noise. From a statistical perspective, maximum likelihood (ML) methods are able to condition the ill-posed problem into a well-posed one. Nevertheless, traditional ML methods o... View full abstract»

• ### Multipath Ghost Suppression for Through-the-Wall Imaging Radar via Array Rotating

Publication Year: 2018, Page(s):868 - 872
| | PDF (880 KB) | HTML

In this letter, we consider the problem of multipath ghost suppression for through-the-wall imaging radar. Exploiting the fact that these locations of the multipath ghosts depend on while the target location is independent of the array configuration, we present a novel framework via array rotating to eliminate the multipath ghosts. Specifically, we first rotate the array with multiple different ar... View full abstract»

• ### Automatic Detection of Subsidence Troughs in SAR Interferograms Based on Circular Gabor Filters

Publication Year: 2018, Page(s):873 - 876
| | PDF (1341 KB) | HTML

This letter presents a method of automatic detection of subsidence troughs in the synthetic aperture radar (SAR) interferograms. Construction of such an algorithm is motivated by the very large amount of freely available SAR imagery from Sentinel mission. The proposed method is based on the convolution of the SAR interferogram with a bank of circular wavelets. Spatial locations with high values of... View full abstract»

• ### Revised Improved DINSAR Algorithm for Monitoring the Inclination Displacement of Top Position of Electric Power Transmission Tower

Publication Year: 2018, Page(s):877 - 881
| | PDF (1291 KB) | HTML

In the electric power transmission corridor areas, the ground surface deformation will influence the inclination of the electric power transmission towers even after the collapse of the towers. Due to the layover, traditional differential synthetic aperture radar interferometry (DINSAR) cannot be used to obtain the inclination displacement of the general line shape and vertical coherent objects su... View full abstract»

• ### Spatial Scale Effect on Wind Speed Retrieval Accuracy Using Sentinel-1 Copolarization SAR

Publication Year: 2018, Page(s):882 - 886
| | PDF (3766 KB) | HTML

High-spatial-resolution wind fields derived from synthetic aperture radar (SAR) instruments are crucial to a wide range of applications. However, the spatial scale effect on wind speed retrieval accuracy has seldom been reported. For the purpose of understanding this issue, this letter makes a quality assessment of wind speed retrieval accuracy based on four commonly used C-band geophysical model ... View full abstract»

• ### An Improved Three-Stage Inversion Algorithm in Forest Height Estimation Using Single-Baseline Polarimetric SAR Interferometry Data

Publication Year: 2018, Page(s):887 - 891
| | PDF (1408 KB) | HTML

This letter provides an advanced method to improve the result for three-stage inversion algorithm, using polarimetric synthetic aperture radar interferometry (PolInSAR) technique based on the random volume over ground model. In the conventional three-stage method, the ground phase, extinction coefficient, and volume layer height are estimated in a geometrical way without the need for a prior infor... View full abstract»

• ### Analysis of Geometrical Approximations in Signal Reconstruction Methods for Multistatic SAR Constellations With Large Along-Track Baseline

Publication Year: 2018, Page(s):892 - 896
| | PDF (5172 KB) | HTML

Large along-track baselines introduce residual polychromatic quadratic phase components which decrease the performance of state-of-the-art multichannel/multiplatform SAR reconstruction algorithms. This letter investigates the impact of the geometrical approximations in signal reconstruction methods for spaceborne multistatic SAR constellations with large along-track baselines operated with a pulse... View full abstract»

• ### Direct Comparison Between Active C-Band Radar and Passive L-Band Radiometer Measurements: Extreme Event Cases

Publication Year: 2018, Page(s):897 - 901
| | PDF (1267 KB) | HTML

Co-located over extreme events, C-band co-polarized and cross-polarized normalized radar cross sections (NRCS) and L-band ocean surface roughness brightness temperature ( $T_{B,text {rough}}$ ) are directly compared to analyze the similarities and differences between these two parameters at medium resolution (about 25 km). NRCS... View full abstract»

• ### Accelerated Computation of Triaxial Induction Tool Response for Arbitrarily Deviated Wells in Planar-Stratified Transversely Isotropic Formations

Publication Year: 2018, Page(s):902 - 906
| | PDF (828 KB) | HTML

In this letter, a new formulation for calculating an induction logging tool response in a multilayered transversely isotropic (also called uniaxial anisotropic) dipping formation is proposed. Using transmission line theory, only five independent integrals are necessary to form all the components of the dyadic Green’s function in order to calculate the tool response, resulting in a more succ... View full abstract»

• ### Analysis of Reflector Sizes in Rotating Mirrored Aperture Synthesis Radiometers

Publication Year: 2018, Page(s):907 - 911
| | PDF (645 KB) | HTML

Rotating mirrored aperture synthesis (RMAS) has been proposed as a new method for high spatial resolution earth observation from the geostationary orbit. However, in previous researches, the reflector sizes are assumed to be infinite so that all antennas in the antenna array can receive the reflection signals. This assumption is obviously unacceptable in practical applications. How to estimate the... 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