Drone Systems and Applications最新文献_第5页

Validation of wind measurements from a multirotor RPAS-mounted ultrasonic wind sensor using a ground-based LiDAR system 使用地面激光雷达系统验证安装在rpas上的多旋翼超声风传感器的风测量结果

Drone Systems and Applications Pub Date : 2023-01-01 DOI: 10.1139/dsa-2022-0034

L. Scicluna, T. Sant, R. Farrugia

{"title":"Validation of wind measurements from a multirotor RPAS-mounted ultrasonic wind sensor using a ground-based LiDAR system","authors":"L. Scicluna, T. Sant, R. Farrugia","doi":"10.1139/dsa-2022-0034","DOIUrl":"https://doi.org/10.1139/dsa-2022-0034","url":null,"abstract":"The aim of this research was to establish the validity of wind measurements from on board a multirotor Remotely Piloted Aircraft System (RPAS) for the purposes of wind monitoring applications. A custom-built hexacopter RPAS recorded wind speed and direction by means of an onboard ultrasonic wind sensor, whilst operating in the inherently highly stochastic nature of open field atmospheric conditions. Experimental data were collected during open field hovering flights subject to different ambient conditions with free stream horizontal wind speeds reaching up to 12 m/s. Flights were conducted at different altitudes above ground level and in proximity to a Light Detection and Ranging (LiDAR) remote wind measurement unit that was used as a low-resolution reference meteorological station. Very good correlation was obtained between the RPAS and LiDAR unit for both wind speed and wind direction measurements across all hovering flight altitudes. The RPAS-based wind speed measurements were found to have a consistent 1 m/s positive offset, whilst the RPAS-based wind direction readings had a 6.16° negative offset. These were potentially caused by differences in the localized wind fields between the LiDAR and RPAS measuring positions, as well as by localized RPAS rotor-induced air flows for wind speed measurements and potential slight misalignments in the instruments’ reference datum for wind direction readings.","PeriodicalId":202289,"journal":{"name":"Drone Systems and Applications","volume":"177 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114854009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Localizing Japanese toads in a mountainous terrain using drone-based radiotelemetry 利用无人机无线电遥测技术在山区定位日本蟾蜍

Drone Systems and Applications Pub Date : 2023-01-01 DOI: 10.1139/dsa-2022-0060

Chiaki Yamato, Tomoichiro Tanaka, K. Ichikawa, Takuya Sato

{"title":"Localizing Japanese toads in a mountainous terrain using drone-based radiotelemetry","authors":"Chiaki Yamato, Tomoichiro Tanaka, K. Ichikawa, Takuya Sato","doi":"10.1139/dsa-2022-0060","DOIUrl":"https://doi.org/10.1139/dsa-2022-0060","url":null,"abstract":"Monitoring the movement of small animals is a fundamental aspect of ecological studies as well as spatially explicit conservation and management. However, this remains a challenging task especially in mountainous terrains. Although drone-based radiotelemetry (DRT) is employed to localize animals, its application in mountainous terrains is limited by the collision risks associated with undulating terrains as well as the obstruction of signals by dense vegetation and steep slopes. We addressed these challenges by generating fine-scale three-dimensional maps and moving vertically mounted directional antennas in a double grid pattern, scanning both in longitudinal and latitudinal grids. This new DRT system was helpful in localizing four adult Japanese toads ( Bufo japonicus) living in hiding places typical of mountainous terrains. All toads were located within 1–60 days of being released. Transmitter signals were detected within two consecutive flights (three flights in one case). Instances of transmitter detection were significantly biased when the drone was facing either direction of the double-grid path, indicating that the double-grid pattern had reduced detection failure. The absolute localization error ( n = 48) of 22.4 ± 21.0 m (44.8 ± 42% of the transmitter-to-receiver distance) was lower than that reported in a previous study conducted in a similar mountainous terrain.","PeriodicalId":202289,"journal":{"name":"Drone Systems and Applications","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117084324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical reflectance across spatial scales—an intercomparison of transect-based hyperspectral, drone, and satellite reflectance data for dry season rangeland 跨空间尺度的光学反射率——旱季牧场基于样条的高光谱、无人机和卫星反射率数据的相互比较

Drone Systems and Applications Pub Date : 2023-01-01 DOI: 10.1139/dsa-2023-0003

Glenn Slade, D. Fawcett, Andrew M. Cunliffe, R. Brazier, Kamal Nyaupane, M. Mauritz, S. Vargas, K. Anderson

{"title":"Optical reflectance across spatial scales—an intercomparison of transect-based hyperspectral, drone, and satellite reflectance data for dry season rangeland","authors":"Glenn Slade, D. Fawcett, Andrew M. Cunliffe, R. Brazier, Kamal Nyaupane, M. Mauritz, S. Vargas, K. Anderson","doi":"10.1139/dsa-2023-0003","DOIUrl":"https://doi.org/10.1139/dsa-2023-0003","url":null,"abstract":"Drone-based multispectral sensing is a valuable tool for dryland spatial ecology, yet there has been limited investigation of the reproducibility of measurements from drone-mounted multispectral camera array systems or the intercomparison between drone-derived measurements, field spectroscopy, and satellite data. Using radiometrically calibrated data from two multispectral drone sensors (MicaSense RedEdge (MRE) and Parrot Sequoia (PS)) co-located with a transect of hyperspectral measurements (tramway) in the Chihuahuan desert (New Mexico, USA), we found a high degree of correspondence within individual drone data sets, but that reflectance measurements and vegetation indices varied between field, drone, and satellite sensors. In comparison to field spectra, MRE had a negative bias, while PS had a positive bias. In comparison to Sentinel-2, PS showed the best agreement, while MRE had a negative bias for all bands. A variogram analysis of NDVI showed that ecological pattern information was lost at grains coarser than 1.8 m, indicating that drone-based multispectral sensors provide information at an appropriate spatial grain to capture the heterogeneity and spectral variability of this dryland ecosystem in a dry season state. Investigators using similar workflows should understand the need to account for biases between sensors. Modelling spatial and spectral upscaling between drone and satellite data remains an important research priority.","PeriodicalId":202289,"journal":{"name":"Drone Systems and Applications","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121719919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New topic horizons for drone systems and applications 无人机系统和应用的新主题视野

Drone Systems and Applications Pub Date : 2023-01-01 DOI: 10.1139/dsa-2023-0019

K. Anderson, Brandi M. Shabaga, S. Wich, Geoff Fink, Martin Barczyk, Jarrod C. Hodgson, Dominique Chabot

{"title":"New topic horizons for drone systems and applications","authors":"K. Anderson, Brandi M. Shabaga, S. Wich, Geoff Fink, Martin Barczyk, Jarrod C. Hodgson, Dominique Chabot","doi":"10.1139/dsa-2023-0019","DOIUrl":"https://doi.org/10.1139/dsa-2023-0019","url":null,"abstract":"Summary This journal (Drone Systems and Applications; DSA) conducted a targeted “horizon scan” during 2022 within our team of editors and associate editors. We asked— Which research areas currently under-represented in Drone Systems and Applications would you like to see more heavily represented in the future? The process highlighted five areas of interest and potential growth: Drones in the geosciences Aquatic drones Ground drones Drones within calibration/validation experiments Drones and computer vision Over the past two years (2020–22), the journal has published over 50 papers with a strong leaning towards aerial drones for ecology and also with an engineering focus. DSA is keen to receive new submissions addressing the five highlighted areas, which lie firmly within the aims and scope of the journal. Further to the horizon scan, we propose two special collections for the coming year—one addressing drone applications ( drones in geoscience applications) and a second addressing drone systems ( aquatic drone systems). We would like to hear from scientists and practitioners in these fields as both contributors and (or) collection editors.","PeriodicalId":202289,"journal":{"name":"Drone Systems and Applications","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128575671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microdrones in field-based structural geology: a photogrammetry and fracture quantification case study from the North Mountain Basalt, Nova Scotia, Canada 微型无人机在野外构造地质中的应用:加拿大新斯科舍省北山玄武岩的摄影测量和裂缝量化案例研究

Drone Systems and Applications Pub Date : 2022-12-07 DOI: 10.1139/dsa-2022-0037

A. Peace, S. Jess

{"title":"Microdrones in field-based structural geology: a photogrammetry and fracture quantification case study from the North Mountain Basalt, Nova Scotia, Canada","authors":"A. Peace, S. Jess","doi":"10.1139/dsa-2022-0037","DOIUrl":"https://doi.org/10.1139/dsa-2022-0037","url":null,"abstract":"Drone use in geoscience research and teaching is becoming widespread, with diverse applications documented. Many studies favour consumer-level drones, however, recent developments in so-called ‘microdrones’ (takeoff weight <250 g) necessitates further investigation to determine possible benefits, limitations, and future developments. Microdrone deployment is often advantageous in numerous jurisdictions due to fewer regulations, lower cost, and simple transportation. In this study, we deployed a DJI Mini 2 microdrone to study the ca. 201 Ma North Mountain Basalt (NMB) exposed in coastal outcrops along the Bay of Fundy, Nova Scotia, Canada. We report benefits of the microdrone as a field aid with three related approaches: 1) general site location and characterisation, 2) drone-based photogrammetry using ArcGIS Drone2Map, and 3) quantitative fracture mapping using FracPaQ. Application of these methods, showed that microdrone-acquired imagery from the NMB exposures provides a valuable resource for interpretation post-fieldwork. The microdrone-derived data shows, two near-perpendicular fracture sets in the NMB: ~NNE-SSW and ~ESE-WNW, with some variation along the coastline. Overall, we determined that microdrones offer field-based geoscientists a valuable tool due to quick deployment, a simple image capture process and relatively straight forward data processing, and thus predict that this approach to enhancing fieldwork will continue to advance.","PeriodicalId":202289,"journal":{"name":"Drone Systems and Applications","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124191093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SOFAR and Auto-link: Software Tools that Bridge the Gap Between Multirotor Drone Design Optimization and CAD SOFAR和自动链接:弥合多旋翼无人机设计优化和CAD之间差距的软件工具

Drone Systems and Applications Pub Date : 2022-11-22 DOI: 10.1139/dsa-2021-0051

Morgan May, Mateus Alexander Rodrigues Braga, P. Ferguson

引用次数: 0

In-situ Manipulations of Aquatic Optical Depth and its Effect on sUAS-Derived Spectral Reflectance 水生光学深度的原位操纵及其对suas衍生光谱反射率的影响

Drone Systems and Applications Pub Date : 2022-10-06 DOI: 10.1139/dsa-2022-0007

Brandon K. Holzbauer-Schweitzer, Robert W. Nairn

{"title":"In-situ Manipulations of Aquatic Optical Depth and its Effect on sUAS-Derived Spectral Reflectance","authors":"Brandon K. Holzbauer-Schweitzer, Robert W. Nairn","doi":"10.1139/dsa-2022-0007","DOIUrl":"https://doi.org/10.1139/dsa-2022-0007","url":null,"abstract":"The collection of spectral data with sensors fixed to various platforms (e.g., satellites, occupied aerial vehicles, and small unoccupied aerial systems (sUAS)) has allowed for the estimation of optically active constituents (OACs) common in surface waters. However, in small, complex, and optically shallow waters where multiple OACs (e.g., chlorophyll-a and total suspended solids) impact the spectral signature, these technologies have experienced significant limitations. However, altering the scale at which these examinations are performed on surface waters (e.g., ponds and lakes) to mesocosm systems (37 cm in height and 30 cm in diameter) provides information on the interactions between multiple OACs and insight on the impact aquatic optical depth has on remotely sensed spectra. This field study examines optically shallow and optically deep mesocosm systems simulated in five-gallon buckets to determine the role aquatic optical depth has on developing accurate surface-water quality models. Results demonstrated an accurate representation of OACs in optically deep mesocosms compared to optically shallow mesocosms when assessed with sUAS. The interferences observed under these conditions were comparable to literature values when studying optically complex water bodies with hyperspectral data. This study provides a basis for understanding the benefits and limitations of monitoring in-situ water quality via sUAS.","PeriodicalId":202289,"journal":{"name":"Drone Systems and Applications","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128228232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Towards Precise Drone-based Measurement of Elevation Change in Permafrost Terrain Experiencing Thaw and Thermokarst 基于无人机的冻融热岩溶高程精确测量研究

Drone Systems and Applications Pub Date : 2022-10-05 DOI: 10.1139/dsa-2022-0036

R. Fraser, S. Leblanc, C. Prévost, Jurjen van der Sluijs

{"title":"Towards Precise Drone-based Measurement of Elevation Change in Permafrost Terrain Experiencing Thaw and Thermokarst","authors":"R. Fraser, S. Leblanc, C. Prévost, Jurjen van der Sluijs","doi":"10.1139/dsa-2022-0036","DOIUrl":"https://doi.org/10.1139/dsa-2022-0036","url":null,"abstract":"Measuring ground elevation changes plays a crucial role in several environmental applications. For instance, permafrost soils undergo seasonal active layer freezing and thawing that causes cyclic elevation changes. Permafrost thaw can result in unidirectional ground subsidence, which may be gradual and uniform, or rapid and irregular in the case of thermokarst landforms such as slumps and degrading ice-wedges. Photogrammetric drone surveys have effectively characterized large (> 0.1 m) ground elevation changes resulting from thermokarst, yet many permafrost processes of interest lead to more subtle elevation changes. In this study, we assessed various drone-based surveying strategies for their precision to measure smaller (< 0.1 m) ground elevation changes to better characterize permafrost-driven surface dynamics. The strategies were compared by examining the short-term reproducibility of modeled elevation for 76 bare ground targets, derived from six repeat drone surveys captured under variable illumination. We found that the Phantom 4 RTK drone using direct georeferencing, combined with one fixed GCP, could reproduce elevations with a mean absolute deviation of 0.6 cm, suggesting a minimum level of change detection of 1.4 cm at 95% confidence. Drone-based methods for measuring permafrost elevation changes should be complementary to in situ and satellite-based (e.g. differential interferometric SAR) approaches.","PeriodicalId":202289,"journal":{"name":"Drone Systems and Applications","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114064514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Development of a small and transportable de-icing/anti-icing drone-mounted system. Part 2: Prototype testing and proof of concept 一种小型和可运输的除冰/防冰无人机安装系统的发展。第2部分:原型测试和概念验证

Drone Systems and Applications Pub Date : 2022-07-21 DOI: 10.1139/dsa-2022-0013

É. Villeneuve, E. Karmouch, Xavier Boulerice

{"title":"Development of a small and transportable de-icing/anti-icing drone-mounted system. Part 2: Prototype testing and proof of concept","authors":"É. Villeneuve, E. Karmouch, Xavier Boulerice","doi":"10.1139/dsa-2022-0013","DOIUrl":"https://doi.org/10.1139/dsa-2022-0013","url":null,"abstract":"Abstract: During winter, aircraft de-icing and anti-icing is a significant part of the operations at large airports. These mandatory operations ensure that the aircraft is clean of any contaminations during take-off. However, these operations are complex due to the heavy equipment required. They cannot be performed at most small airports and remote northern locations. As part of Canada’s Department of National Defense Innovation for Defense Excellence and Security research program, a study to design a de/anti-icing system mounted onto a drone has been initiated. This system should greatly increase the flexibility of these operations, allowing them to be easily performed when no other infrastructure is available. The developed system can even be transported inside the aerial vehicle itself for operations at its initial location and at its destinations. This paper presents the second part of this study in which the system is first tested under laboratory controlled conditions to demonstrate its ability to perform de/anti-icing operations with a real fluid. Then, flight test is performed for a proof-of-concept in which the system successfully cleans a commercial box truck from contaminations.","PeriodicalId":202289,"journal":{"name":"Drone Systems and Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128948417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Aerodynamics Effect of Holes in UAV Wings Modified for VTOL Capability 无人机机翼孔对垂直起降性能的空气动力学影响

Drone Systems and Applications Pub Date : 2022-06-01 DOI: 10.1139/dsa-2021-0031

L. Sawaqed, Ahmad Bani Younes, Mohammad I. Aldalal’ah

{"title":"Aerodynamics Effect of Holes in UAV Wings Modified for VTOL Capability","authors":"L. Sawaqed, Ahmad Bani Younes, Mohammad I. Aldalal’ah","doi":"10.1139/dsa-2021-0031","DOIUrl":"https://doi.org/10.1139/dsa-2021-0031","url":null,"abstract":"This research investigates the possibility of modifying the X8 Skywalker from a fixed-wing unmanned aerial vehicle into a convertiplane to utilize the advantages of vertical take-off and landing and maintain the benefits of fixed-wing design. In this study two configurations were tested; the first one includes sharp holes embedded in the wings for the propellers and the second one has filleted holes. The purpose of the study is to analyze the new configurations’ ability to generate enough lift after reducing the wings area. The aerodynamic coefficients are calculated through computational fluid dynamics. Simulation results were validated experimentally by using the wind tunnel. Even though the holes reduced the wing area by about 20%, the proposed modifications could lead lift to drag ratio around 7. The results showed that the new configurations can generate five times the lift compared to the drag, while the maximum lift to drag ratio dropped by 50% compared to the original design. At the same time, the filleted hole configuration showed less drag and turbulence effects, especially at a low angle of attack, compared to the sharp hole configuration.","PeriodicalId":202289,"journal":{"name":"Drone Systems and Applications","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132126413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0