Unmanned aerial vehicle based remote sensing method for monitoring a steep mountainous slope in the Three Gorges Reservoir, China

Huang, Haifeng; Long, Jingjing; Lin, Haiyu; Zhang, Lei; Yi, Wu; Lei, Bangjun

doi:10.1007/s12145-017-0291-9

Cited by 40 publications

(25 citation statements)

References 24 publications

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“…This allows measurements of small engineering objects in a limited terrain. A low-cost UAV equipped with remote sensors or camera allows frequent flights at low altitudes in almost any area (Huang et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Application of Low-Cost Fixed-Wing UAV for Inland Lakes Shoreline Investigation

Templin

Popielarczyk

Kosecki

2017

Pure Appl. Geophys.

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Abstract-One of the most important factors that influences the performance of geomorphologic parameters on urban lakes is the water level. It fluctuates periodically, causing shoreline changes. It is especially significant for typical environmental studies like bathymetric surveys, morphometric parameters calculation, sediment depth changes, thermal structure, water quality monitoring, etc. In most reservoirs, it can be obtained from digitized historical maps or plans or directly measured using the instruments such as: geodetic total station, GNSS receivers, UAV with different sensors, satellite and aerial photos, terrestrial and airborne light detection and ranging, or others. Today one of the most popular measuring platforms, increasingly applied in many applications is UAV. Unmanned aerial system can be a cheap, easy to use, on-demand technology for gathering remote sensing data. Our study presents a reliable methodology for shallow lake shoreline investigation with the use of a low-cost fixed-wing UAV system. The research was implemented on a small, eutrophic urban inland reservoir located in the northern part of Poland-Lake Suskie. The geodetic TS, and RTK/GNSS measurements, hydroacoustic soundings and experimental aerial mapping were conducted by the authors in 2012-2015. The article specifically describes the UAV system used for experimental measurements, the obtained results and the accuracy analysis. Final conclusions demonstrate that even a lowcost fixed-wing UAV can provide an excellent tool for accurately surveying a shallow lake shoreline and generate valuable geoinformation data collected definitely faster than when traditional geodetic methods are employed.

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Section: Introductionmentioning

confidence: 99%

Application of Low-Cost Fixed-Wing UAV for Inland Lakes Shoreline Investigation

Templin

Popielarczyk

Kosecki

2017

Pure Appl. Geophys.

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“…On the contrary, if the target of the study is the definition of the landslide's morphological features, the use of more detailed RPAS images seemed to be the better solution. As suggested by Walter et al (2009) and Huang et al (2017a), one of the most critical elements for correct georeferencing of acquired images is the use of GCPs. The in situ installation and positioning acquisition of GCPs can be an important challenge, in particular in dangerous areas such as active landslides.…”

Section: Landslide Recognitionmentioning

confidence: 99%

Review article: the use of remotely piloted aircraft systems (RPASs) for natural hazards monitoring and management

Giordan

Hayakawa

Nex

et al. 2018

Nat. Hazards Earth Syst. Sci.

145

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Abstract. The number of scientific studies that consider possible applications of remotely piloted aircraft systems (RPASs) for the management of natural hazards effects and the identification of occurred damages strongly increased in the last decade. Nowadays, in the scientific community, the use of these systems is not a novelty, but a deeper analysis of the literature shows a lack of codified complex methodologies that can be used not only for scientific experiments but also for normal codified emergency operations. RPASs can acquire on-demand ultra-high-resolution images that can be used for the identification of active processes such as landslides or volcanic activities but can also define the effects of earthquakes, wildfires and floods. In this paper, we present a review of published literature that describes experimental methodologies developed for the study and monitoring of natural hazards. IntroductionIn the last three decades, the number of natural disasters showed a positive trend with an increase in the number of affected populations. Disasters not only affected the poor and characteristically more vulnerable countries but also those thought to be better protected. The Annual Disaster Statistical Review describes recent impacts of natural disasters on the population and reports 342 naturally triggered disasters in 2016 (Guha-Sapir et al., 2017). This is less than the annual average disaster frequency observed from 2006 to 2015 (376.4 events). However, natural disasters are still responsible for a high number of casualties (8733 death). In the period 2006-2015, the average number of causalities caused annually by natural disasters is 69 827. In 2016, hydrological disasters (177) had the largest share in natural disaster occurrence (51.8 %), followed by meteorological disasters (96; 28.1 %), climatological disasters (38; 11.1 %) and geophysical disasters (31; 9.1 %) (Guha-Sapir et al., 2017). To face these disasters, one of the most important solutions is the use of systems able to provide an adequate level of information for correctly understanding these events and their evolution. In this context, surveying and monitoring natural hazards gained importance. In particular, during the emergency phase it is very important to evaluate and control the phenomenon of evolution, preferably operating in near real time or real time, and consequently, use this information for a better risk assessment scenario. The available acquired data must be processed rapidly to support the emergency services and decision makers.Recently, the use of remote sensing (satellite and airborne platform) in the field of natural hazards and disasters has become common, also supported by the increase in geospatial technologies and the ability to provide and process up-to-date imagery (Joyce et al., 2009;Tarolli, 2014). Remotely sensed data play an integral role in predicting hazard events such as floods and landslides, subsidence events and other ground instabilities. Because of their acquisition mode and capabilPublished by Copern...

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“…Compared with traditional digital photogrammetry methods, the semi-automated SfM-based photogrammetric method is recommended for use in the processing of UAV-based photographs because it is simpler and more efficient (Snavely, 2008;Westoby et al, 2012;James et al, 2016); for example, the camera position can be automatically calculated using only the GNSS data associated with each photograph, and information on the attitude of the aircraft, such as its roll, pitch, and yaw, obtained from the inertial measurement unit are no longer needed (Huang et al, 2017). The adopted SfM-based photogrammetric processing consists of extracting tie points from the photographs at lower resolution, performing GNSS-assisted aerial triangulation and bundle adjustment, and generating threedimensional point clouds.…”

Section: On-site Fast Processing and Applicationmentioning

confidence: 99%

“…Regarding the measurement of the GCPs, the RTK-DGPS technique, which has advantages in that it is fast and has high efficiency and high precision, should be used preferentially as long as there are stable GNSS signals, regardless of whether the automatic or manual scheme is used, to measure the 3-D coordinates of all of the GCPs. On the other hand, in mountainous areas, canyons, etc., with unstable or even no GNSS signals, the total station measurement techniques would be a good choice, and sometimes even the non-prism total station measurement techniques may be the only option (Huang et al, 2017). Moreover, the measurement can be carried out at any time during the on-site investigation process, but if it is performed at the same time as the collection of images by the UAV, the GCP markers should not be covered.…”

Section: Layout and Measurement Of Gcpsmentioning

confidence: 99%

A method for using unmanned aerial vehicles for emergency investigation of single geo-hazards and sample applications of this method

Huang

Long

et al. 2017

Nat. Hazards Earth Syst. Sci.

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Abstract. In recent years, unmanned aerial vehicles (UAVs) have become widely used in emergency investigations of major natural hazards over large areas; however, UAVs are less commonly employed to investigate single geohazards. Based on a number of successful investigations in the Three Gorges Reservoir area, China, a complete UAVbased method for performing emergency investigations of single geo-hazards is described. First, a customized UAV system that consists of a multi-rotor UAV subsystem, an aerial photography subsystem, a ground control subsystem and a ground surveillance subsystem is described in detail. The implementation process, which includes four steps, i.e., indoor preparation, site investigation, on-site fast processing and application, and indoor comprehensive processing and application, is then elaborated, and two investigation schemes, automatic and manual, that are used in the site investigation step are put forward. Moreover, some key techniques and methods -e.g., the layout and measurement of ground control points (GCPs), route planning, flight control and image collection, and the Structure from Motion (SfM) photogrammetry processing -are explained. Finally, three applications are given. Experience has shown that using UAVs for emergency investigation of single geo-hazards greatly reduces the time, intensity and risks associated with on-site work and provides valuable, high-accuracy, high-resolution information that supports emergency responses.

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Unmanned aerial vehicle based remote sensing method for monitoring a steep mountainous slope in the Three Gorges Reservoir, China

Cited by 40 publications

References 24 publications

Application of Low-Cost Fixed-Wing UAV for Inland Lakes Shoreline Investigation

Application of Low-Cost Fixed-Wing UAV for Inland Lakes Shoreline Investigation

Review article: the use of remotely piloted aircraft systems (RPASs) for natural hazards monitoring and management

A method for using unmanned aerial vehicles for emergency investigation of single geo-hazards and sample applications of this method

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