IEEE Geoscience and Remote Sensing Letters

Papers
(The median citation count of IEEE Geoscience and Remote Sensing Letters is 3. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-11-01 to 2025-11-01.)
ArticleCitations
Using SAOCOM Data and Bayesian Inference to Estimate Soil Dielectric Constant in Agricultural Soils663
A Robust Descriptor Based on Modality-Independent Neighborhood Information for Optical-SAR Image Matching223
Probability Hypothesis Density Correlation Filter for Infrared Small Target Tracking197
Investigating the Association of Seasonal Dynamics in GEDI Canopy Cover Profiles and Sentinel-1 Backscatter in Temperate Forests167
An Optimization Approach for Hourly Ozone Simulation: A Case Study in Chongqing, China165
Generation of Turbidite Probability Scenarios Using Geostatistical Methods165
Parallelized Nonlinear Target Detection for Asbestos Identification in Large-Scale Remote Sensing Data160
Multidimensional Attention Learning for VHR Remote Sensing Imagery Recognition146
Elastic Wave Vector Decomposition for Common-Shot Multicomponent Data Using Pure Wave Equation in Transversely Isotropic Media139
A Method Based on Equivalent Measurement of Radiation Fields for Coded-Aperture Imaging With System Errors138
Divergence Regulated Encoder Network for Joint Dimensionality Reduction and Classification124
MD-NeRF: Enhancing Large-Scale Scene Rendering and Synthesis With Hybrid Point Sampling and Adaptive Scene Decomposition121
A Method for Downscaling Satellite Soil Moisture Based on Land Surface Temperature and Net Surface Shortwave Radiation118
Nonlocal Multiscale Single Image Statistics From Sentinel-1 SAR Data for High Resolution Bitemporal Forest Wind Damage Detection118
A Superpixel-Correlation-Based Multiview Approach for Hyperspectral Image Classification117
The Optimal Deployment of Ground Samples: Whether Spatial Heterogeneity Is Dominated by Randomness or Structure Factors?116
Enhanced Through-the-Wall Radar Imaging Based on Deep Layer Aggregation113
Fast Sparse Aperture ISAR Imaging for Maneuvering Target by CZT- and NCS-Based Approximated Observation Model98
Alpine Snowpack Refractive Index Retrieval Based on Tomograms Distortion Calculation96
Shipborne ZTD Retrieval With a Low-Cost GNSS Receiver94
An Improved Real-Time Echo Separation Processing Scheme in Intermediate Frequency Domain94
Moving Object Tracking via 3-D Total Variation in Remote-Sensing Videos93
Endorheic Waterbodies Delineation From Remote Sensing as a Tool for Immersed Surface Topography91
Collaborative Label Propagation-Based Semisupervised Linear Discriminant Analysis for Hyperspectral Images89
Global-Margin Uncertainty and Collaborative Sampling for Active Learning in Complex Aerial Images Object Detection88
Component Interpretation for SAR Target Images Based on Deep Generative Model85
Semi-automatic Extraction of Rural Roads From High-Resolution Remote Sensing Images Based on a Multifeature Combination84
Spatiotemporal Synergistic Ensemble Deep Learning Method and Its Application to S-Wave Velocity Prediction83
Modified ERMA With Generalized Resampling for Maneuvering Highly Squinted TOPS SAR83
Multisynchrosqueezing Generalized S-Transform and Its Application in Tight Sandstone Gas Reservoir Identification81
Novel Multiscale Decision Fusion Approach to Unsupervised Change Detection for High-Resolution Images79
Large-Gradient Interferometric Phase Unwrapping Over Coal Mining Areas Assisted by a 2-D Elliptical Gaussian Function78
Estimating Land Surface All-Wave Daily Net Radiation From VIIRS Top-of-Atmosphere Data70
Change Type Recognition for SAR Images Using Statistical Bidirectional LSTM Network With Few Labeled Samples70
Mining Area Ground Fissure Identification Method Based on AR-SE-ResUNet68
An Entropy-Driven Clustering and Semantic Association Framework for Cross-Domain Few-Shot Hyperspectral Image Classification67
Scattering Power Decomposition Based on PolInSAR Images and Sparse Representation66
Enhanced RSVQA Insight Through Synergistic Visual-Linguistic Attention Models66
MBSSNet: A Mamba-Based Joint Semantic Segmentation Network for Optical and SAR Images66
Surface Suspended Particulate Matter Flux in the Northern Gulf of Mexico From Satellite Observations65
TE/TM Pattern Recognition Based on Convolutional Neural Network65
Tracking Moving Ships Using Distributed Acoustic Sensing Data65
Global Context Parallel Attention for Anchor-Free Instance Segmentation in Remote Sensing Images64
Satellite Image Target Super-Resolution With Adversarial Shape Discriminator63
Amplitude-Preserving 3-D TV Regularization for Seismic Random Noise Attenuation62
Simultaneous Estimation of Land Surface and Atmospheric Parameters From Thermal Hyperspectral Data Using a LSTM–CNN Combined Deep Neural Network62
Multifeature GNSS-R Snow Depth Retrieval Using GA-BP Neural Network61
A Method to Decompose Airborne LiDAR Bathymetric Waveform in Very Shallow Waters Combining Deconvolution With Curve Fitting60
Infrared Small Target Detection Based on Background Estimation and Scale Fusion59
Feasibility of Retrieving Land Surface Temperature From ECOSTRESS Data Using Split-Window Algorithms59
SAR-3DTR: A Novel Feature Hybrid Transformer Network for End-to-End 3-D Target Reconstruction From SAR Images58
Deep Multiscale Fine-Grained Hashing for Remote Sensing Cross-Modal Retrieval57
MT-GAN: A Multitask GAN for Severe Convective Weather Nowcasting57
The Rayleigh Generalized Autoregressive Score Model for SAR Data Interpretation55
BSFormer: Transformer-Based Reconstruction Network for Hyperspectral Band Selection55
MDE-UNet: A Multitask Deformable UNet Combined Enhancement Network for Farmland Boundary Segmentation55
Distilled Heterogeneous Feature Alignment Network for SAR Image Semantic Segmentation54
Enhance Tensor RPCA-Based Mahalanobis Distance Method for Hyperspectral Anomaly Detection53
New Insights Into Wideband Synthetic Aperture Radar Interferometry52
TFFNet: Transform Fusion Fuzzy Network for Multimodal Remote Sensing Classification52
Sequence-Aware Reanalysis Encoding for Typhoon Wind Speed Estimation52
Efficient End-to-End Diffusion Model for One-Step SAR-to-Optical Translation51
On the Application of AERONET-OC Multispectral Data to Assess Satellite-Derived Hyperspectral R rs51
GNSS Pseudo Interference Reflectometry for Ground-Based Soil Moisture Remote Sensing: Theory and Simulations50
A Deep Learning-Based Moving Target Detection Method by Combining Spatiotemporal Information for ViSAR50
Enhanced Spectral–Spatial Fusion Network for Multispectral Object Detection in Ground-Aerial Images50
Generalized Ambiguity Function for FDA Radar Joint Range, Angle and Doppler Resolution Evaluation49
Fusformer: A Transformer-Based Fusion Network for Hyperspectral Image Super-Resolution49
A Convolutional Autoencoder Method for Simultaneous Seismic Data Reconstruction and Denoising49
A Deep Learning Method for Ocean Front Extraction in Remote Sensing Imagery49
Band Selection Using Dilation Distances49
Learning to Reduce Information Bottleneck for Object Detection in Aerial Images48
UNetMamba: An Efficient UNet-Like Mamba for Semantic Segmentation of High-Resolution Remote Sensing Images48
Recovering Bathymetry From Satellite Altimetry-Derived Gravity by Fully Connected Deep Neural Network47
A Late-Stage Bitemporal Feature Fusion Network for Semantic Change Detection47
Evaluating Snow Bidirectional Reflectance of Models Using Multiangle Remote Sensing Data and Field Measurements47
Visible and Infrared Object Tracking via Convolution-Transformer Network With Joint Multimodal Feature Learning47
MsanlfNet: Semantic Segmentation Network With Multiscale Attention and Nonlocal Filters for High-Resolution Remote Sensing Images47
Estimating Signal-to-Clutter Ratio of InSAR Corner Reflectors From SAR Time Series47
Multiscale Deformable DenseNet for Wetland Mapping Using Hyperspectral Images46
An Improved Method for Estimating Clumping Index by Digital Hemispheric Photography With Field Measurements46
A Low Coupling and Lightweight Algorithm for Ship Detection in Optical Remote Sensing Images46
Lightweight Autonomous Autoencoders for Timely Hyperspectral Anomaly Detection46
Soil Moisture Retrieval Over Bare Soil Surface From Single-Polarization SAR Data by Combining Neighborhood Pixels46
Frequency-Aware Contextual Feature Pyramid Network for Infrared Small-Target Detection46
A Simple Method for Near-Real-Time Monthly Nighttime Light Image Production45
Dynamic Cascade Query Selection for Oriented Object Detection45
PS-ESD: Persistent Scatterer-Based Enhanced Spectral Diversity Approach for Time-Series Sentinel-1 TOPS Data Co-Registration45
SRD-NET for Ground Crack Detection in Coal Mines Using UAV Images45
Generation of High-Quality Spaceborne Interrupted FMCW SAR Images via Singular Value Threshold-Based Matrix Completion45
Suppression of Range Ambiguity in Spaceborne SAR With Elevation Beam Pattern Mask Design45
A Novel Ground-Based Cloud Image Segmentation Method by Using Deep Transfer Learning45
DGMR: Diffusion Guided Masked Reconstruction Framework for Multimodal Cloud Removal44
Dimension Compressed CFAR for Massive MIMO Radar44
Forest-CD: Forest Change Detection Network Based on VHR Images44
DIP-MoG: Non-i.i.d. Seismic Noise Attenuation Using Mixture of Gaussians Noise Model and Deep Image Prior44
Quaternion Convolutional Neural Network With EMAP Representation for Multisource Remote-Sensing Data Classification44
An Adaptive Sea Surface Target Detection Method Based on Amplitude Scaling44
Gaussian Aware Anchor-Free Rotated Detector for Aerial Object Detection44
Dual-View Structural Similarity Subspace Clustering for Hyperspectral Band Selection44
Hyperspectral and Multispectral Image Fusion via Bayesian Nonlocal CP Factorization44
How to Identify Good Superpixels for Deforestation Detection on Tropical Rainforests43
First Demonstration of Using Signal Processing Approach to Suppress Signal Ringing in Impulse UWB Through-Wall Radar43
Personnel Search and Rescue Detector Based on Reconfigurable FPGA Accelerator: A Lightweight Multi-Scale Parallel Drone-Mounted Detector42
Emitter Localization System Based on a Synthetic Aperture Map Drift Technique Aided by an Interferometer42
A False Alarm Controllable Detection Method Based on CNN for Sea-Surface Small Targets42
SFBDA: A Semantic-Decoupled Data Augmentation Framework for Infrared Few-Shot Object Detection on UAVs42
Self-Supervised SAR Despeckling Powered by Implicit Deep Denoiser Prior42
TransGA-Net: Integration Transformer With Gradient-Aware Feature Aggregation for Accurate Cloud Detection in Remote Sensing Imagery42
An Open-Set Domain Adaptation Framework for Hyperspectral Image Classification With Pixel-Aware Weighting and Decoupled Alignment42
Adaptive Detectors for Colocated MIMO Radar With Training Data42
Stage 1 Validation of Plant Area Index From the Global Ecosystem Dynamics Investigation41
A Semi-Empirical Threshold Model for Oil Spill Detection by Analyzing Microwave Backscatter of Ocean Surface From Sentinel-1 C-Band SAR Data41
Deep Feature Reconstruction Learning for Open-Set Classification of Remote-Sensing Imagery41
Dynamic Bilinear Fusion Network for Synthetic Aperture Radar Image Change Detection41
Multimodal Feature Disentangle-Fusion Network for Hyperspectral and LiDAR Data Classification41
AF-DCDU-Net: An Approach for ISAR Autofocus Imaging via Deep Convolution and Deep Unfolding Net40
End-to-End Multilevel Hybrid Attention Framework for Hyperspectral Image Classification40
A Novel Image Registration Algorithm Using Wavelet Transform and Matrix-Multiply Discrete Fourier Transform39
UTFNet: Uncertainty-Guided Trustworthy Fusion Network for RGB-Thermal Semantic Segmentation39
Road Extraction Via the Complementary Relationship between Architectural and Non-Architectural Areas39
Sea Surface Temperature Forecasting With Ensemble of Stacked Deep Neural Networks39
First-Order Sea Clutter Suppression for High-Frequency Surface Wave Radar Using Orthogonal Projection in Spatial–Temporal Domain39
Hyperparameter Configuration Learning for Ship Detection From Synthetic Aperture Radar Images39
DiFormer: A Difference Transformer Network for Remote Sensing Change Detection39
An SAR Target Detector Based on Gradient Harmonized Mechanism and Attention Mechanism39
Unsupervised Ship Detection in SAR Images Using Superpixels and CSPNet39
Learning-Based Profiling of Buried Elliptical-Cylindrical Objects39
An Assessment of the Applicability of Three Reanalysis Snow Density Datasets Over China Using Ground Observations39
Forest Height Estimation With TanDEM-X SAR and InSAR Features Using Deep Learning39
IFTSDNet: An Interact-Feature Transformer Network With Spatial Detail Enhancement Module for Change Detection38
Semi-Supervised Semantic Segmentation of Remote Sensing Images With Iterative Contrastive Network38
Convolution and Attention Mixer for Synthetic Aperture Radar Image Change Detection38
SAR Despeckling Using a Denoising Diffusion Probabilistic Model38
TinyRS-R1: Compact Vision Language Model for Remote Sensing38
SOD-YOLOv10: Small Object Detection in Remote Sensing Images Based on YOLOv1037
A Deep Learning-Based GPR Forward Solver for Predicting B-Scans of Subsurface Objects37
SOLSTM: Multisource Information Fusion Semantic Segmentation Network Based on SAR-OPT Matching Attention and Long Short-Term Memory Network37
Toward Efficient and Accurate Remote Sensing Image–Text Retrieval With a Coarse-to-Fine Approach37
Multiscale Super Token Transformer for Hyperspectral Image Classification37
Shape Embedding and Knowledge Mining Network for Generalized Few-Shot Remote Sensing Segmentation36
An Automatic Cloud Detection Neural Network for High-Resolution Remote Sensing Imagery With Cloud–Snow Coexistence36
Infrared Small Target Detection Using Local Feature-Based Density Peaks Searching36
Time-Series InSAR Dynamic Analysis With Robust Sequential Adjustment36
Construction of Digital Elevation Models on the Intertidal Flats Using TanDEM-X Bistatic Observations36
2-D Lunar Microwave Radiance Observations From the NOAA-20 ATMS36
A Multiarc Adjustment Method for Interferometric Synthetic Aperture Radar Time-Series Analysis36
High-Precision ISAR Method for Nonlinear Rotating Targets: Imaging for Drones36
Optical-to-SAR Image Matching Using Multiscale Masked Structure Features36
Anomaly Detection in Nonstationary Videos Using Time-Recursive Differencing Network-Based Prediction36
Mini-UAV Movement Classification Based on Sparse Decomposition of Micro-Doppler Signature36
A Unified Framework for Bridging the Data Gap Between GRACE/GRACE-FO for Both Greenland and Antarctica36
Land-Cover Change Detection for SAR Images Based on Biobjective Fuzzy Local Information Clustering Method With Decomposition36
A Self-Adaptive Denoising Algorithm Based on Genetic Algorithm for Photon-Counting Lidar Data35
A Novel Three-Dimension Imaging Algorithm Based on Trajectory Association of ISAR Image Sequence35
A Full-Link Simulation Method for Satellite Single-Photon LiDARs35
AgF²Net: Attention-Guided Feature Fusion Network for Multitemporal Hyperspectral Image Change Detection35
Neighborhood Difference-Based Self-Supervised Network for Detecting Small Changes From Synthetic Aperture Radar Images35
Phenology of Phytoplankton Size Classes in the Arabian Sea35
Swin-CFNet: An Attempt at Fine-Grained Urban Green Space Classification Using Swin Transformer and Convolutional Neural Network35
Attention Prompt-Driven Source-Free Adaptation for Remote Sensing Images Semantic Segmentation35
Improved DBSCAN for Infrared Cluster Small Target Detection35
Learning Two-View Correspondences and Geometry Using Neighbor-Aware Network34
Signatures of Small Boats With TerraSAR-X Staring Spotlight Data34
Hierarchical Information Enhancing Detector for Remotely Sensed Object Detection34
CycleGAN-Based Clutter Suppression and Pipeline Positioning Method for GPR Image34
Spectral Reweighting and Spectral Similarity Weighting for Sparse Hyperspectral Unmixing34
Generating Views Using Atmospheric Correction for Contrastive Self-Supervised Learning of Multispectral Images33
Spatial Dynamic Selection Network for Remote-Sensing Image Fusion33
Round Trip Times Versus the Range of the Radargram Maxima of an Air-Coupled Bistatic GPR: Modeling and Fitting by a Hyperbola33
Enhancing Infrared Small Target Detection Using Learnable Graph-Attention and Heat Equation Techniques33
Temperature and Water Vapor Channel Selection of FY-3E HIRAS II for Application in Numerical Weather Prediction33
Equivariant Attention Graph Capsule Network for Remote Sensing Scene Recognition33
A Novel Unsupervised Object-Level Crop Rotation Detection With Time-Series Dual-Polarimetric SAR Data33
Deformation Retrieval Using the Spatially Constrained MTInSAR Method33
Unsupervised Domain Adaption on Category Level by Pseudo-Label for Radar Target Detection33
Seismic Reconstruction Based on Data Fitting With the l 1-Norm in the Presence of Abnormal Values33
Simulating 0.4–2.5 GHz Brightness Temperatures of the Ross Ice Shelf, Antarctica33
Azimuth Ambiguity Suppression for SAR via Variable PRF and Complex Image Deconvolution32
Time-Resolved Sentinel-3 Vegetation Indices Via Inter-Sensor 3-D Convolutional Regression Networks32
Multilevel Reweighted Sparse Hyperspectral Unmixing Using Superpixel Segmentation and Particle Swarm Optimization32
The Environmental Story During the COVID-19 Lockdown: How Human Activities Affect PM2.5 Concentration in China?32
Simulations of Dual Electrical Source-Based SNMR for Deep Water in Urban Environments32
Adaptive Coherent Detection in Compound-Gaussian Clutter With Nakagami-Distributed Texture32
Enhancing Mid–Low-Resolution Ship Detection With High-Resolution Feature Distillation32
A Robust Source Wavelet Phase Inversion Method Based on Correlation Norm Waveform Inversion32
Adaptive Multilevel Fusion Refinement Network for Object Detection in Remote Sensing Images32
A Semisupervised Convolution Neural Network for Partial Unlabeled Remote-Sensing Image Segmentation32
Updates of Microwave Humidity Sounder From FengYun-3A to 3F Satellites32
Sparsity-Promoting Weighted Radon Preconditioning for Land Waveform Inversion32
Using Deep Learning for Glacier Thickness Estimation at a Regional Scale31
Continual Learning Approach for Remote Sensing Scene Classification31
Feature Super-Resolution Fusion With Cross-Scale Distillation for Small-Object Detection in Optical Remote Sensing Images31
Dual-Complementary Convolution Network for Remote-Sensing Image Denoising31
IEEE Geoscience and Remote Sensing Letters Institutional Listings31
A Generalized Multiscale Bundle-Based Hyperspectral Sparse Unmixing Algorithm31
MMPC-Net: Multigranularity and Multiscale Progressive Contrastive Learning Neural Network for Remote Sensing Image Scene Classification31
Multisource Domain Generalization Two-Branch Network for Hyperspectral Image Cross-Domain Classification31
Selection of Augmented Data for Overcoming the Imbalance Problem in Facies Classification31
Biscale Convolutional Self-Attention Network for Hyperspectral Coastal Wetlands Classification30
ORENet: Oriented Rotation Equivariant Network for Remote Sensing Object Detection30
Extended Particle Weak-Form-Based Neural Networks for Seismic Modeling30
Adaptive Wavelet Threshold Denoising for Bathymetric Laser Full-Waveforms With Weak Bottom Returns30
Ice-Unet: A Very High-Resolution UAV-Optimized Deep Learning Model for Sea Ice Classification30
The Spatiotemporal and Frequency-Domain Learning Framework for Moving Object Detection in Satellite Video30
Radar Target Detection in Heterogeneous Environment Based on HPD Manifold Clustering30
Superresolution Radar Imaging via Peak Search and Compressed Sensing30
Segmented Drifter Trajectory-Based Eddy Identification Validated by SWOT Altimetry30
A Novel ISAR Imaging Approach for Moving Targets Utilizing Joint Particle Swarm Optimization and Time Polynomial Rescaling-Nonuniform FFT29
Contrast Source Inversion-Based Multilayered Object Analysis for Terahertz Wave Imaging29
Application of Point Spread Function in Tunnel Seismic Prediction29
Reinforcement Learning for Neural Architecture Search in Hyperspectral Unmixing29
Hyperspectral Anomaly Detection Based on Graph Regularized Variational Autoencoder29
Landsat LST Product Gap Filling Using the Multiple Features Ensemble Learning Model Caused by the Missing Emissivity Dataset29
Shape-Adaptive High-Order Tensor Decomposition for Hyperspectral Feature Extraction29
DNN With Similarity Constraint for GEO SA-BSAR Moving Target Imaging29
Automatic Lunar Crater Detection Based on DEM Data Using a Max Curvature Detection Method29
Oceanic Eddy Identification Using Pyramid Split Attention U-Net With Remote Sensing Imagery29
Bridging the Domain Gap: A Simple Domain Matching Method for Reference-Based Image Super-Resolution in Remote Sensing29
Sea Surface Temperature Image Completion Method Based on Multiscale Fourier Fusion Neural Operator29
InSAR Phase Unwrapping by Deep Learning Based on Gradient Information Fusion29
Sea Ice Thickness Inversion Based on Support Vector Regression for FengYun-3E IDW Data29
UNMamba: Cascaded Spatial–Spectral Mamba for Blind Hyperspectral Unmixing29
Performance Simulation of SmallSat SAR Persistent Scatterer Interferometry With Deteriorated Images29
RoadCT: A Hybrid CNN-Transformer Network for Road Extraction From Satellite Imagery28
Estimation of Live Fuel Moisture Content From Multiple Sources of Remotely Sensed Data28
Global in Local: A Convolutional Transformer for SAR ATR FSL28
Learning-Based Multiview Stereo for Remote Sensed Imagery With Relative Depth28
Orientation-Aware Feature Fusion Network for Ship Detection in SAR Images28
How Does the Management Paradigm Contain Wildfire Over Southwest China? Evidence From Remote Sensing Observation28
Adaptive Superpixel-Level CFAR Detector for SAR Inshore Dense Ship Detection28
Ultrawideband Tomographic Imaging in Multipath-Rich Environment28
False Targets Suppression of Integral Power Frequency Modulated Waveform for Countering Interrupted Sampling Repeater Jamming28
High-Precision Intelligence Denoising of Potential Field Data Based on RevU-Net28
DL-Based Clutter Removal in Migrated GPR Data for Detection of Buried Target28
A Novel Semisupervised Contrastive Regression Framework for Forest Inventory Mapping With Multisensor Satellite Data28
A ViT-Based Multiscale Feature Fusion Approach for Remote Sensing Image Segmentation28
Domain-Adaptive HRRP Generation Using Two-Stage Denoising Diffusion Probability Model28
Superresolution Land Cover Mapping Using a Generative Adversarial Network28
Discrepant Bi-Directional Interaction Fusion Network for Hyperspectral and LiDAR Data Classification28
NASA’s Black Marble Multiangle Nighttime Lights Temporal Composites28
IRGraphSeg: Infrared Small Target Detection Based on Hierarchical GNN28
Multitarget Barrage Jamming Against Azimuth Multichannel HRWS SAR via Phase Errors Modulation of Transmitted Signal28
GAN-Based Semisupervised Scene Classification of Remote Sensing Image27
HMF-Former: Spatio-Spectral Transformer for Hyperspectral and Multispectral Image Fusion27
FDTD Medium Dimension Selection Guidelines for GPR Synthetic Data Generation27
XSNet: Lightweight Object Detection Model Using x-shaped Architecture in Remote Sensing Images27
Channel Attention-Based Temporal Convolutional Network for Satellite Image Time Series Classification27
A Fast Diffraction Tomography Algorithm for 3-D Through-the-Wall Radar Imaging Using Nonuniform Fast Fourier Transform27
EDDA-ConvLSTM: Encoder-Decoder Dual Attention ConvLSTM for Moroccan Coastal Sea Surface Temperature Prediction27
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