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Remote Sensing, Volume 13, Issue 6

2021 March-2 - 183 articles

Cover Story: Bark beetles are some of the most important drivers of change in forests throughout the Earth’s Northern Hemisphere. These native insects typically persist at low populations in conifer forests, yet irruptive outbreaks can also occur rapidly across large areas. Over the last 20 years, outbreaks of three bark beetle species (Dendroctonus rufipennis, Dendroctonus ponderosae, and Dryocoetes confusus), triggered by above-average drought conditions, have led to broad-scale forest mortality in the Southern Rocky Mountains, USA. Using Landsat time series with field validation, the effects of these outbreaks was quantified across this complex region. Over 10,000 km2 of subalpine forest area was affected by bark beetles; while effects of the outbreaks were severe in many places, they were highly variable across the region. View this paper
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Articles (183)

  • Article
  • Open Access
9 Citations
3,632 Views
16 Pages

23 March 2021

Large-scale ecosystem restoration projects (ERPs) have been implemented since the beginning of the new millennium to restore vegetation and improve the ecosystem in Southwest China. However, quantifying the effects of specific restoration activities,...

  • Article
  • Open Access
19 Citations
7,442 Views
17 Pages

Exploring VIIRS Continuity with MODIS in an Expedited Capability for Monitoring Drought-Related Vegetation Conditions

  • Trenton D. Benedict,
  • Jesslyn F. Brown,
  • Stephen P. Boyte,
  • Daniel M. Howard,
  • Brian A. Fuchs,
  • Brian D. Wardlow,
  • Tsegaye Tadesse and
  • Kirk A. Evenson

23 March 2021

Vegetation has been effectively monitored using remote sensing time-series vegetation index (VI) data for several decades. Drought monitoring has been a common application with algorithms tuned to capturing anomalous temporal and spatial vegetation p...

  • Article
  • Open Access
49 Citations
5,425 Views
17 Pages

A Method of Segmenting Apples Based on Gray-Centered RGB Color Space

  • Pan Fan,
  • Guodong Lang,
  • Bin Yan,
  • Xiaoyan Lei,
  • Pengju Guo,
  • Zhijie Liu and
  • Fuzeng Yang

23 March 2021

In recent years, many agriculture-related problems have been evaluated with the integration of artificial intelligence techniques and remote sensing systems. The rapid and accurate identification of apple targets in an illuminated and unstructured na...

  • Article
  • Open Access
7 Citations
3,311 Views
18 Pages

A New Method for Extracting Individual Plant Bio-Characteristics from High-Resolution Digital Images

  • Saba Rabab,
  • Edmond Breen,
  • Alem Gebremedhin,
  • Fan Shi,
  • Pieter Badenhorst,
  • Yi-Ping Phoebe Chen and
  • Hans D. Daetwyler

23 March 2021

The extraction of automated plant phenomics from digital images has advanced in recent years. However, the accuracy of extracted phenomics, especially for individual plants in a field environment, requires improvement. In this paper, a new and effici...

  • Article
  • Open Access
6 Citations
2,801 Views
19 Pages

23 March 2021

As a popular research direction in the field of intelligent transportation, road detection has been extensively concerned by many researchers. However, there are still some key issues in specific applications that need to be further improved, such as...

  • Article
  • Open Access
30 Citations
5,223 Views
20 Pages

23 March 2021

Hydrological connectivity is an important characteristic of wetlands that maintains the stability and functions of an ecosystem. This study investigates the temporal variations of hydrological connectivity and their driving mechanism in Baiyangdian L...

  • Article
  • Open Access
12 Citations
4,526 Views
22 Pages

Spatio-Temporal Distribution of Deep Convection Observed along the Trans-Mexican Volcanic Belt

  • José Francisco León-Cruz,
  • Cintia Carbajal Henken,
  • Noel Carbajal and
  • Jürgen Fischer

23 March 2021

Complex terrain features—in particular, environmental conditions, high population density and potential socio-economic damage—make the Trans-Mexican Volcanic Belt (TMVB) of particular interest regarding the study of deep convection and related severe...

  • Article
  • Open Access
15 Citations
3,830 Views
19 Pages

23 March 2021

In the Qihe area, the magnetic anomalies caused by deep and concealed magnetite are weak and compared with ground surveys, airborne surveys further weaken the signals. Moreover, the magnetite in the Qihe area belongs to a contact-metasomatic deposit,...

  • Review
  • Open Access
44 Citations
15,508 Views
57 Pages

Trends in Satellite Earth Observation for Permafrost Related Analyses—A Review

  • Marius Philipp,
  • Andreas Dietz,
  • Sebastian Buchelt and
  • Claudia Kuenzer

23 March 2021

Climate change and associated Arctic amplification cause a degradation of permafrost which in turn has major implications for the environment. The potential turnover of frozen ground from a carbon sink to a carbon source, eroding coastlines, landslid...

  • Article
  • Open Access
6 Citations
3,251 Views
21 Pages

Geometry-Aware Discriminative Dictionary Learning for PolSAR Image Classification

  • Yachao Zhang,
  • Xuan Lai,
  • Yuan Xie,
  • Yanyun Qu and
  • Cuihua Li

23 March 2021

In this paper, we propose a new discriminative dictionary learning method based on Riemann geometric perception for polarimetric synthetic aperture radar (PolSAR) image classification. We made an optimization model for geometry-aware discrimination d...

  • Communication
  • Open Access
21 Citations
5,923 Views
11 Pages

AgroShadow: A New Sentinel-2 Cloud Shadow Detection Tool for Precision Agriculture

  • Ramona Magno,
  • Leandro Rocchi,
  • Riccardo Dainelli,
  • Alessandro Matese,
  • Salvatore Filippo Di Gennaro,
  • Chi-Farn Chen,
  • Nguyen-Thanh Son and
  • Piero Toscano

23 March 2021

Remote sensing for precision agriculture has been strongly fostered by the launches of the European Space Agency Sentinel-2 optical imaging constellation, enabling both academic and private services for redirecting farmers towards a more productive a...

  • Article
  • Open Access
11 Citations
4,023 Views
24 Pages

23 March 2021

A glacier surge, which is quasi-periodic and involves rapid flow, is an abnormal glacier motion. Although some glaciers have been found to be surging, little is known about surging glaciers on the Tibetan Plateau (TP), especially the Central and Nort...

  • Technical Note
  • Open Access
188 Citations
17,195 Views
17 Pages

23 March 2021

Precision agriculture relies on the rapid acquisition and analysis of agricultural information. An emerging method of agricultural monitoring is unmanned aerial vehicle low-altitude remote sensing (UAV-LARS), which possesses significant advantages of...

  • Article
  • Open Access
52 Citations
6,328 Views
22 Pages

3D Reconstruction of Coastal Cliffs from Fixed-Wing and Multi-Rotor UAS: Impact of SfM-MVS Processing Parameters, Image Redundancy and Acquisition Geometry

  • Gil Gonçalves,
  • Diogo Gonçalves,
  • Álvaro Gómez-Gutiérrez,
  • Umberto Andriolo and
  • Juan Antonio Pérez-Alvárez

23 March 2021

Monitoring the dynamics of coastal cliffs is fundamental for the safety of communities, buildings, utilities, and infrastructures located near the coastline. Structure-from-Motion and Multi View Stereo (SfM-MVS) photogrammetry based on Unmanned Aeria...

  • Article
  • Open Access
12 Citations
4,867 Views
17 Pages

23 March 2021

The Gravity Recovery and Climate Experiment (GRACE) mission and its Follow-On (GRACE-FO) mission provide unprecedented observations of terrestrial water storage (TWS) dynamics at basin to continental scales. Established GRACE data assimilation techni...

  • Article
  • Open Access
18 Citations
4,525 Views
16 Pages

Comparison of Climate Reanalysis and Remote-Sensing Data for Predicting Olive Phenology through Machine-Learning Methods

  • Izar Azpiroz,
  • Noelia Oses,
  • Marco Quartulli,
  • Igor G. Olaizola,
  • Diego Guidotti and
  • Susanna Marchi

23 March 2021

Machine-learning algorithms used for modelling olive-tree phenology generally and largely rely on temperature data. In this study, we developed a prediction model on the basis of climate data and geophysical information. Remote measurements of weathe...

  • Article
  • Open Access
18 Citations
5,110 Views
17 Pages

23 March 2021

Land use/land cover (LULC) change has been recognized as one of the most important indicators to study ecological and environmental changes. Remote sensing provides an effective way to map and monitor LULC change in real time and for large areas. How...

  • Article
  • Open Access
6 Citations
4,558 Views
19 Pages

GPU-Based Parallel Implementation of VLBI Correlator for Deep Space Exploration System

  • Fan Zhang,
  • Chenxi Zhao,
  • Songtao Han,
  • Fei Ma and
  • Deliang Xiang

23 March 2021

Very Long Baseline Interferometry (VLBI) solution can yield accurate information of angular position, and has been successfully used in the field of deep space exploration, such as astrophysics, imaging, detector positioning, and so on. The increase...

  • Article
  • Open Access
16 Citations
4,916 Views
20 Pages

GPR-Based Automatic Identification of Root Zones of Influence Using HDBSCAN

  • Xihong Cui,
  • Zhenxian Quan,
  • Xuehong Chen,
  • Zheng Zhang,
  • Junxiong Zhou,
  • Xinbo Liu,
  • Jin Chen,
  • Xin Cao and
  • Li Guo

23 March 2021

The belowground root zone of influence (ZOI) is fundamental to the study of the root–root and root–soil interaction mechanisms of plants and is vital for understanding changes in plant community compositions and ecosystem processes. However, traditio...

  • Article
  • Open Access
13 Citations
4,546 Views
18 Pages

22 March 2021

The tropospheric delay is one of the main error sources that degrades the accuracy of Global Navigation Satellite Systems (GNSS) Single Point Positioning (SPP). Although an empirical model is usually applied for correction and thereby to improve the...

  • Article
  • Open Access
17 Citations
4,933 Views
23 Pages

22 March 2021

Currently available high-resolution digital elevation model (DEM) is not particularly useful to geologists for understanding the long-term changes in fluvial landforms induced by tectonic uplift, although DEMs that are generated from satellite stereo...

  • Review
  • Open Access
324 Citations
26,829 Views
25 Pages

22 March 2021

The incorporation of advanced technologies into Unmanned Aerial Vehicles (UAVs) platforms have enabled many practical applications in Precision Agriculture (PA) over the past decade. These PA tools offer capabilities that increase agricultural produc...

  • Article
  • Open Access
23 Citations
6,113 Views
17 Pages

UAV Recognition Based on Micro-Doppler Dynamic Attribute-Guided Augmentation Algorithm

  • Caidan Zhao,
  • Gege Luo,
  • Yilin Wang,
  • Caiyun Chen and
  • Zhiqiang Wu

22 March 2021

A micro-Doppler signature (m-DS) based on the rotation of drone blades is an effective way to detect and identify small drones. Deep-learning-based recognition algorithms can achieve higher recognition performance, but they needs a large amount of sa...

  • Article
  • Open Access
8 Citations
4,089 Views
18 Pages

Analysis and Validation of a Hybrid Forward-Looking Down-Looking Ground Penetrating Radar Architecture

  • María García-Fernández,
  • Guillermo Álvarez-Narciandi,
  • Yuri Álvarez López and
  • Fernando Las-Heras Andrés

22 March 2021

Ground Penetrating Radar (GPR) has proved to be a successful technique for the detection of landmines and Improvised Explosive Devices (IEDs) buried in the ground. In the last years, novel architectures for safe and fast detection, such as those base...

  • Article
  • Open Access
11 Citations
3,461 Views
27 Pages

22 March 2021

Synthetic aperture radar (SAR) systems are susceptible to radio frequency interference (RFI). The existence of RFI will cause serious degradation of SAR image quality and a huge risk of target misjudgment, which makes the research on RFI suppression...

  • Article
  • Open Access
52 Citations
5,229 Views
22 Pages

22 March 2021

This study evaluated the performance of the early, late and final runs of IMERG version 06 precipitation products at various spatial and temporal scales in China from 2008 to 2017, against observations from 696 rain gauges. The results suggest that t...

  • Article
  • Open Access
8 Citations
4,636 Views
17 Pages

A New Method Based on a Multilayer Perceptron Network to Determine In-Orbit Satellite Attitude for Spacecrafts without Active ADCS Like UVSQ-SAT

  • Adrien Finance,
  • Mustapha Meftah,
  • Christophe Dufour,
  • Thomas Boutéraon,
  • Slimane Bekki,
  • Alain Hauchecorne,
  • Philippe Keckhut,
  • Alain Sarkissian,
  • Luc Damé and
  • Antoine Mangin

21 March 2021

Climate change is largely determined by the radiation budget imbalance at the Top Of the Atmosphere (TOA), which is generated by the increasing concentrations of greenhouse gases (GHGs). As a result, the Earth Energy Imbalance (EEI) is considered as...

  • Article
  • Open Access
56 Citations
7,005 Views
23 Pages

21 March 2021

The availability of groundwater is of concern. The demand for groundwater in Korea increased by more than 100% during the period 1994–2014. This problem will increase with population growth. Thus, a reliable groundwater analysis model for regional sc...

  • Article
  • Open Access
9 Citations
4,243 Views
21 Pages

21 March 2021

This contribution examines the potential of object-based image analysis (OBIA) for archaeological predictive modeling starting from elevation data, by testing a ruleset for the location of “control places” on two test areas in the Alpine environment...

  • Article
  • Open Access
32 Citations
5,219 Views
21 Pages

ZoomInNet: A Novel Small Object Detector in Drone Images with Cross-Scale Knowledge Distillation

  • Bi-Yuan Liu,
  • Huai-Xin Chen,
  • Zhou Huang,
  • Xing Liu and
  • Yun-Zhi Yang

21 March 2021

Drone-based object detection has been widely applied in ground object surveillance, urban patrol, and some other fields. However, the dramatic scale changes and complex backgrounds of drone images usually result in weak feature representation of smal...

  • Article
  • Open Access
13 Citations
6,851 Views
25 Pages

The Annual Cycling of Nighttime Lights in India

  • Fengchi Hsu,
  • Mikhail Zhizhin,
  • Tilottama Ghosh,
  • Christopher Elvidge and
  • Jay Taneja

21 March 2021

India is known to have unstable power supply, and many locations show an annual cycle in VIIRS Nighttime Light (VNL). In this study, autocorrelation function (ACF) analysis is used to identify the annual cycling in VNL. Two fundamentally different cl...

  • Article
  • Open Access
7 Citations
4,415 Views
19 Pages

Similarity Index Based Approach for Identifying Similar Grotto Statues to Support Virtual Restoration

  • Wei Hua,
  • Miaole Hou,
  • Yunfei Qiao,
  • Xuesheng Zhao,
  • Shishuo Xu and
  • Songnian Li

21 March 2021

Grottoes, with caves and statues, are an important part of immovable heritage. Statues in a particular grotto setting are often similar in geometric form and artistic style, and identifying the similarity between these statues can help provide import...

  • Article
  • Open Access
29 Citations
4,638 Views
26 Pages

21 March 2021

In order to acquire a high resolution multispectral (HRMS) image with the same spectral resolution as multispectral (MS) image and the same spatial resolution as panchromatic (PAN) image, pansharpening, a typical and hot image fusion topic, has been...

  • Article
  • Open Access
53 Citations
7,412 Views
33 Pages

Spatial Downscaling of Land Surface Temperature Based on a Multi-Factor Geographically Weighted Machine Learning Model

  • Saiping Xu,
  • Qianjun Zhao,
  • Kai Yin,
  • Guojin He,
  • Zhaoming Zhang,
  • Guizhou Wang,
  • Meiping Wen and
  • Ning Zhang

20 March 2021

Land surface temperature (LST) is a critical parameter of surface energy fluxes and has become the focus of numerous studies. LST downscaling is an effective technique for supplementing the limitations of the coarse-resolution LST data. However, the...

  • Article
  • Open Access
3 Citations
3,091 Views
17 Pages

20 March 2021

Unusual shore-normal and barred-like rhythmic features were found in Camposoto Beach (Bay of Cádiz, SW Spain) during a monitoring program using unmanned aerial systems (UAS). They appeared in the backshore and persisted for 6 months (October 2017–Mar...

  • Article
  • Open Access
12 Citations
4,198 Views
19 Pages

20 March 2021

The adaptability and stability of new bread wheat cultivars that can be successfully grown in rainfed conditions are of paramount importance. Plant improvement can be boosted using effective high-throughput phenotyping tools in dry areas of the Medit...

  • Article
  • Open Access
16 Citations
5,251 Views
16 Pages

Forest Fuel Loads Estimation from Landsat ETM+ and ALOS PALSAR Data

  • Yanxi Li,
  • Xingwen Quan,
  • Zhanmang Liao and
  • Binbin He

20 March 2021

Fuel load is the key factor driving fire ignition, spread and intensity. The current literature reports the light detection and ranging (LiDAR), optical and airborne synthetic aperture radar (SAR) data for fuel load estimation, but the optical and SA...

  • Communication
  • Open Access
6 Citations
3,175 Views
12 Pages

Planetary Wave Spectrum in the Stratosphere–Mesosphere during Sudden Stratospheric Warming 2018

  • Yuke Wang,
  • Gennadi Milinevsky,
  • Oleksandr Evtushevsky,
  • Andrew Klekociuk,
  • Wei Han,
  • Asen Grytsai,
  • Oleksandr Antyufeyev,
  • Yu Shi,
  • Oksana Ivaniha and
  • Valerii Shulga

20 March 2021

The planetary wave activity in the stratosphere–mesosphere during the Arctic major Sudden Stratospheric Warming (SSW) in February 2018 is discussed on the basis of microwave radiometer (MWR) measurements of carbon monoxide (CO) above Kharkiv, Ukraine...

  • Article
  • Open Access
28 Citations
3,859 Views
17 Pages

Experimental Study on the Thermal Infrared Spectral Variation of Fractured Rock

  • Jianwei Huang,
  • Shanjun Liu,
  • Wenfang Liu,
  • Chunju Zhang,
  • Shuiping Li,
  • Min Yu and
  • Lixin Wu

20 March 2021

Previous studies have shown that thermal infrared radiation (TIR) anomalies occur in the vicinity of fractures that form when a rock is loaded to failure. Different types of fracturing modes correspond to different TIR anomaly trends. However, the sp...

  • Article
  • Open Access
22 Citations
4,345 Views
24 Pages

Increasing Spatio-Temporal Resolution for Monitoring Alpine Solifluction Using Terrestrial Laser Scanners and 3D Vector Fields

  • Christoph Holst,
  • Jannik Janßen,
  • Berit Schmitz,
  • Martin Blome,
  • Malte Dercks,
  • Anna Schoch-Baumann,
  • Jan Blöthe,
  • Lothar Schrott,
  • Heiner Kuhlmann and
  • Tomislav Medic

20 March 2021

This article investigates the usage of terrestrial laser scanner (TLS) point clouds for monitoring the gradual movements of soil masses due to freeze–thaw activity and water saturation, commonly referred to as solifluction. Solifluction is a geomorph...

  • Article
  • Open Access
4 Citations
2,809 Views
18 Pages

20 March 2021

Estuarine freshwater transport has a substantial impact on the near-shore ecosystem and coastal ocean environment away from the estuary. This paper introduces two independent methods to track the Mekong freshwater-induced mass transport by calculatin...

  • Article
  • Open Access
3 Citations
4,153 Views
19 Pages

20 March 2021

Low-level jet (LLJ) significantly affects the synoptic-scale hydrometeorological conditions in the South China Sea, although the impact of LLJs on the marine ecological environment is still unclear. We used multi-satellite observation data and meteor...

  • Article
  • Open Access
36 Citations
7,439 Views
19 Pages

Earthquake Damage Region Detection by Multitemporal Coherence Map Analysis of Radar and Multispectral Imagery

  • Mahdi Hasanlou,
  • Reza Shah-Hosseini,
  • Seyd Teymoor Seydi,
  • Sadra Karimzadeh and
  • Masashi Matsuoka

20 March 2021

Earth, as humans’ habitat, is constantly affected by natural events, such as floods, earthquakes, thunder, and drought among which earthquakes are considered one of the deadliest and most catastrophic natural disasters. The Iran-Iraq earthquake occur...

  • Article
  • Open Access
23 Citations
4,231 Views
19 Pages

19 March 2021

Following the advancement and progression of urbanization, management problems of the wildland–urban interface (WUI) have become increasingly serious. WUI regional governance issues involve many factors including climate, humanities, etc., and...

  • Article
  • Open Access
28 Citations
7,495 Views
23 Pages

19 March 2021

Knowledge of the spatial pattern of the population is important. Census population data provide insufficient spatial information because they are released only for large geographic areas. Nighttime light (NTL) data have been utilized widely as an eff...

  • Article
  • Open Access
12 Citations
3,312 Views
23 Pages

Multiscale Decomposition Prediction of Propagation Loss in Oceanic Tropospheric Ducts

  • Mingxia Dang,
  • Jiaji Wu,
  • Shengcheng Cui,
  • Xing Guo,
  • Yunhua Cao,
  • Heli Wei and
  • Zhensen Wu

19 March 2021

The oceanic tropospheric duct is a structure with an abnormal atmospheric refractive index. This structure severely affects the remote sensing detection capability of electromagnetic systems designed for an environment with normal atmospheric refract...

  • Article
  • Open Access
33 Citations
5,222 Views
21 Pages

19 March 2021

Exploring the spatial relationship between ecosystem services (ES) and human disturbance intensity (HDI) is vital for maintaining regional ecological security. This study aims to explore the spatial correlation between ES and HDI in the Guangdong–Hon...

  • Article
  • Open Access
26 Citations
3,850 Views
26 Pages

19 March 2021

Multi-source soil moisture (SM) products provide a vigorous tool for the estimation of soil moisture on a large scale, but it is crucial to carry out the evaluation of those products before further application. In the present work, an evaluation fram...

  • Article
  • Open Access
22 Citations
4,899 Views
24 Pages

19 March 2021

In this work, we propose a new deep convolution neural network (DCNN) architecture for semantic segmentation of aerial imagery. Taking advantage of recent research, we use split-attention networks (ResNeSt) as the backbone for high-quality feature ex...

  • Article
  • Open Access
22 Citations
4,332 Views
22 Pages

19 March 2021

Tea (Camellia sinensis) is one of the most dominant economic plants in China and plays an important role in agricultural economic benefits. Spring tea is the most popular drink due to Chinese drinking habits. Although the global temperature is genera...

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Remote Sens. - ISSN 2072-4292