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Artykuły w czasopismach na temat „Aerial tethers”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 1 lutego 2022

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1

Sandino, Luis A., Manuel Bejar, Konstantin Kondak, and Anibal Ollero. "Multi-Sensor Data Fusion for a Tethered Unmanned Helicopter Using a Square-Root Unscented Kalman Filter." Unmanned Systems 04, no. 04 (October 2016): 273–87. http://dx.doi.org/10.1142/s2301385016500114.

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The use of tethered Unmanned Aircraft Systems (UAS) in aerial robotic applications is a relatively unexplored research field. This work addresses the attitude and position estimation of a small-size unmanned helicopter tethered to a moving platform using a multi-sensor data fusion algorithm based on a numerically efficient sigma-point Kalman filter implementation. For that purpose, the state prediction is performed using a kinematic process model driven by measurements of the inertial sensors (accelerometer and gyroscope) onboard the helicopter and the subsequent correction is done using infor

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Glazner, R., J. Ballard, and AR Armitage. "Predation refuge values of marsh and mangrove vegetation for the marsh periwinkle Littoraria irrorata." Marine Ecology Progress Series 672 (August 19, 2021): 153–62. http://dx.doi.org/10.3354/meps13785.

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Black mangroves Avicennia germinans are becoming increasingly common in coastal wetlands in the Gulf of Mexico (USA). As mangroves displace salt marsh vegetation, there may be consequences for associated wetland fauna. In a series of field studies, we compared prey refuge values between marsh and mangrove vegetation for a vertically migrating gastropod, the marsh periwinkle Littoraria irrorata. Littoraria were tethered to marsh grasses (Spartina alterniflora) or the aerial roots (pneumatophores) of Avicennia in arrays that fully crossed vegetation type (Spartina vs. Avicennia), tether height (

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Kanoria, Akshay A., and Rajkumar S. Pant. "Winged Aerostat Systems for Better Station Keeping for Aerial Surveillance." Advanced Materials Research 433-440 (January 2012): 6871–79. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.6871.

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An aerostat is a tethered balloon with an aerodynamically shaped envelope containing a lighter-than-air gas that generates bulk of the lifting force. Aerostats are used extensively as an aerial platform for many scientific and commercial applications. Conventional aerostats envelopes have an ellipsoidal shape, due to which they suffer from a large amount of horizontal displacement (called blowby) due to the ambient winds. If the drag force acting on aerostat is high, the resulting blowbyis higher and a longer tether is required to maintain the specified operating altitude; this results in lowe

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Li, J. M., C. R. Li, G. Z. Su, W. Li, L. L. Ma, and Y. K. Liu. "MAPPING SYSTEM AND PHOTOGRAMMETRIC PROCESSING METHOD FOR TETHERED BALLOON PLATFORM." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W16 (September 17, 2019): 157–61. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w16-157-2019.

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<p><strong>Abstract.</strong> As a platform with the advantages of safety, wide altitude range and long flight time, tethered balloon has been used in archaeology, coastal, island mapping and other related fields. Tethered balloon is tied to the mooring system by tether rope, and often moves in a small range with the airflow, resulting in a very close distance between the camera stations. Due to the small base-to-height ratio, failure of relative orientation or poor quality of point cloud tend to appear frequently. In this paper, a mapping system for tethered balloon is intro

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5

Poltavsky, A. V. "Telecommunication of communication and control systems on unmanned aerial vehicles platforms." Civil Aviation High Technologies 24, no. 2 (April 25, 2021): 58–69. http://dx.doi.org/10.26467/2079-0619-2021-24-2-58-69.

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The review article discusses the possibility of using tethered high-altitude telecommunication platforms (VTPS) based on unmanned aerial vehicles (as tethered UAVs), which are also called – "tethered drones" Flying COWs (Cell on Wings). Their essence lies in the fact that sufficiently high electrical voltage is applied to a flexible metal cable from a ground-based mobile control point in order to solve the multidisciplinary VTP tasks for the local cellular coverage on a vast territory. These unmanned aerial systems with VTP and tethered UAVs, which retransmit signals in relation to a specific

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Marks, A. R. "AERIAL PHOTOGRAPHY FROM A TETHERED HELIUM FILLED BALLOON." Photogrammetric Record 13, no. 74 (August 26, 2006): 257–61. http://dx.doi.org/10.1111/j.1477-9730.1989.tb00677.x.

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Nirmalasari, Nining, and Junaiti Sahar. "Manajemen Mitigasi Bencana Menggunakan Teknologi Balloon Tethered." Jurnal Penelitian Kesehatan "SUARA FORIKES" (Journal of Health Research "Forikes Voice") 11, no. 4 (June 4, 2020): 414. http://dx.doi.org/10.33846/sf11419.

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Introduction: The occurrence of natural disasters in Indonesia from year to year continues to occur, with the progress of communication technology that is increasingly expected to be able to facilitate communication when a disaster occurs. Such as the use of balloon tethered technology that can function for disaster mitigation, with the use of balloon tethered that is tethered in areas that are at risk of disaster prone. Methods: The method used by the author was literature review. The database used by the author were Google Scholar, IEEE Xplore, GEOECO, EBSCOhost, Researchgate and the keyword

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Molina, P., M. Blázquez, J. Sastre, and I. Colomina. "A METHOD FOR SIMULTANEOUS AERIAL AND TERRESTRIAL GEODATA ACQUISITION FOR CORRIDOR MAPPING." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-1/W4 (August 26, 2015): 227–32. http://dx.doi.org/10.5194/isprsarchives-xl-1-w4-227-2015.

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In this paper, we present mapKITE, a new mobile, simultaneous terrestrial and aerial, geodata collection and post-processing method. On one side, the method combines a terrestrial mobile mapping system (TMMS) with an unmanned aerial mapping one, both equipped with remote sensing payloads (at least, a nadir-looking visible-band camera in the UA) by means of which aerial and terrestrial geodata are acquired simultaneously. This tandem geodata acquisition system is based on a terrestrial vehicle (TV) and on an unmanned aircraft (UA) linked by a 'virtual tether', that is, a mechanism based on the

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9

Pereira, Pedro O., and Dimos V. Dimarogonas. "Pose stabilization of a bar tethered to two aerial vehicles." Automatica 112 (February 2020): 108695. http://dx.doi.org/10.1016/j.automatica.2019.108695.

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KISHIDA, Tomoki, and Hirohisa KOJIMA. "20402 Yawing Motion Control of Aerial Tethered Load using Scissors CMGs." Proceedings of Conference of Kanto Branch 2015.21 (2015): _20402–1_—_20402–2_. http://dx.doi.org/10.1299/jsmekanto.2015.21._20402-1_.

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Jung, Sunghun, Yonghyeon Jo, and Young-Joon Kim. "Aerial Surveillance with Low-Altitude Long-Endurance Tethered Multirotor UAVs Using Photovoltaic Power Management System." Energies 12, no. 7 (April 6, 2019): 1323. http://dx.doi.org/10.3390/en12071323.

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For a continuous surveillance mission using a swarm of multiple tethered low-altitude long-endurance (LALE) multirotor-type unmanned aerial vehicles (UAVs), we developed a 500 W class photovoltaic power management system (PPMS) which monitors voltage and current flows of photovoltaic (PV) panels, battery pack, and UAV and controls power flows to support UAV flight operation. In contract to a fixed-wing UAV, a tethered multirotor UAV can generate continuously varying closed-circuit television (CCTV) like ground map images by stitching incoming images though the operation range is limited. With

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Tognon, Marco, and Antonio Franchi. "Dynamics, Control, and Estimation for Aerial Robots Tethered by Cables or Bars." IEEE Transactions on Robotics 33, no. 4 (August 2017): 834–45. http://dx.doi.org/10.1109/tro.2017.2677915.

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Flamm, Richard O., Edward C. G. Owen, Caryn F. W. Owen, Randall S. Wells, and Doug Nowacek. "AERIAL VIDEOGRAMMETRY FROM A TETHERED AIRSHIP TO ASSESS MANATEE LIFE-STAGE STRUCTURE." Marine Mammal Science 16, no. 3 (July 2000): 617–30. http://dx.doi.org/10.1111/j.1748-7692.2000.tb00955.x.

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ALESHIN, Boris S., Alexander I. CHERNOMORSKY, Eduard D. KURIS, Konstantin S. LELKOV, and Maxim V. IVAKIN. "Robotic complex for inspection of the outer surface of the aircraft in its parking lot." INCAS BULLETIN 12, S (July 28, 2020): 21–31. http://dx.doi.org/10.13111/2066-8201.2020.12.s.2.

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Through-flight inspection of the outer surface of the aircraft is necessary to identify possible damage to the surface of the aircraft caused by metal fatigue, lightning, birds collision, etc. The article discusses the method of robotic inspection of the outer surface of the aircraft in its open air parking area. The robotic complex (RC) consists of an unmanned ground vehicle (UGV) and an unmanned aerial vehicle (UAV) interconnected by a tether mechanism (TM). The algorithm of the RC functioning is presented. The main attention is paid to the formation of the TM control and the features of its

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15

Zakaria, S., M. R. Mahadi, A. F. Abdullah, and K. Abdan. "AERIAL PLATFORM RELIABILITY FOR FLOOD MONITORING UNDER VARIOUS WEATHER CONDITIONS: A REVIEW." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-3/W4 (March 6, 2018): 591–602. http://dx.doi.org/10.5194/isprs-archives-xlii-3-w4-591-2018.

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<p><strong>Abstract.</strong> Flood is an annual disaster in Malaysia, especially in the east coast region. Recently, other regions in Malaysia have also experience devastating flood. A flood aerial monitoring is one of the approaches that involved in the flood disaster management. Compared to space borne remote sensing, aerial platforms are much reliable to obtain higher spatial resolution and real time data. Due to cloud coverage and revisit limitations, space borne remote sensing approach is a less desirable option for flood monitoring. In this paper, a review of existing

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16

Creamean, Jessie M., Katherine M. Primm, Margaret A. Tolbert, Emrys G. Hall, Jim Wendell, Allen Jordan, Patrick J. Sheridan, Jedediah Smith, and Russell C. Schnell. "HOVERCAT: a novel aerial system for evaluation of aerosol–cloud interactions." Atmospheric Measurement Techniques 11, no. 7 (July 6, 2018): 3969–85. http://dx.doi.org/10.5194/amt-11-3969-2018.

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Abstract. Aerosols have a profound impact on cloud microphysics through their ability to serve as ice nucleating particles (INPs). As a result, cloud radiative properties and precipitation processes can be modulated by such aerosol–cloud interactions. However, one of the largest uncertainties associated with atmospheric processes is the indirect effect of aerosols on clouds. The need for more advanced observations of INPs in the atmospheric vertical profile is apparent, yet most ice nucleation measurements are conducted on the ground or during infrequent and intensive airborne field campaigns.

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Nakanishi, Hiroaki, and Hiroyuki Hashimoto. "AR-Marker/IMU Hybrid Navigation System for Tether-Powered UAV." Journal of Robotics and Mechatronics 30, no. 1 (February 20, 2018): 76–85. http://dx.doi.org/10.20965/jrm.2018.p0076.

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Electrically powered unmanned aerial vehicles (UAV) are useful in performing inspection at various infrastructures or plants. A power supply through a tether cable is effective in extending flight time. During inspection activities, some or all satellites may be occluded. UAVs for inspection must be operated even in GPS-denied areas; therefore, a navigation system for GPS-denied areas is required. Depth information cannot be obtained correctly by a monocular camera. The ARToolkit, which is widely applied in augmented reality (AR), is not sufficient as a UAV navigation system. We have proposed

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Chwaleba, Augustyn, Aleksander Olejnik, Tomasz Rapacki, and Norbert Tuśnio. "ANALYSIS OF CAPABILITY OF AIR POLLUTION MONITORING FROM AN UNMANNED AIRCRAFT." Aviation 18, no. 1 (April 3, 2014): 13–19. http://dx.doi.org/10.3846/16487788.2014.865936.

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Satellite monitoring systems can be used for remote monitoring of the atmosphere over a given area but they do not provide information on the state of pollution at a given time. Additional information could only be obtained after several days. Measurements from an aircraft may be obtained almost at real-time and in different geometries – vertical and horizontal. The future of this type of monitoring is remote-controlled unmanned aerial vehicles (airplanes, helicopters and balloons tethered), equipped with telemetric monitoring.

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Fesneau, Corinne, Jean-François Deconinck, Pierre Pellenard, and Stéphane Reboulet. "Evidence of aerial volcanic activity during the Valanginian along the northern Tethys margin." Cretaceous Research 30, no. 3 (June 2009): 533–39. http://dx.doi.org/10.1016/j.cretres.2008.09.004.

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Adams, Kye, Allison Broad, David Ruiz-García, and Andrew R. Davis. "Continuous wildlife monitoring using blimps as an aerial platform: a case study observing marine megafauna." Australian Zoologist 40, no. 3 (May 1, 2020): 407–15. http://dx.doi.org/10.7882/az.2020.004.

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ABSTRACT Aerial surveys are a powerful means of collecting ecological data in terrestrial and marine systems that may otherwise be difficult to acquire. Increasingly aerial observations are made with Unmanned Aerial Vehicles (UAVs), such as drones. As this technology has improved in reliability and affordability it has replaced the traditional use of fixed-wing aircraft and helicopters. Drones do, however, have limitations; primarily in their limited flight duration, potential to disturb wildlife and concerns over safety. Here we introduce an aerostat, a ground tethered blimp, as a logisticall

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Bandini, Filippo, Daniel Olesen, Jakob Jakobsen, Cecile Marie Margaretha Kittel, Sheng Wang, Monica Garcia, and Peter Bauer-Gottwein. "Technical note: Bathymetry observations of inland water bodies using a tethered single-beam sonar controlled by an unmanned aerial vehicle." Hydrology and Earth System Sciences 22, no. 8 (August 7, 2018): 4165–81. http://dx.doi.org/10.5194/hess-22-4165-2018.

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Abstract. High-quality bathymetric maps of inland water bodies are a common requirement for hydraulic engineering and hydrological science applications. Remote sensing methods, such as space-borne and airborne multispectral imaging or lidar, have been developed to estimate water depth, but are ineffective for most inland water bodies, because of the attenuation of electromagnetic radiation in water, especially under turbid conditions. Surveys conducted with boats equipped with sonars can retrieve accurate water depths, but are expensive, time-consuming, and unsuitable for unnavigable water bod

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Wang, Hui-Feng, Lei Zhai, He Huang, Li-Min Guan, Ke-Nan Mu, and Gui-ping Wang. "Measurement for cracks at the bottom of bridges based on tethered creeping unmanned aerial vehicle." Automation in Construction 119 (November 2020): 103330. http://dx.doi.org/10.1016/j.autcon.2020.103330.

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Gu, Beom W., Su Y. Choi, Young Soo Choi, Guowei Cai, Lakmal Seneviratne, and Chun T. Rim. "Novel Roaming and Stationary Tethered Aerial Robots for Continuous Mobile Missions in Nuclear Power Plants." Nuclear Engineering and Technology 48, no. 4 (August 2016): 982–96. http://dx.doi.org/10.1016/j.net.2016.02.014.

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Chapman, J. W., D. R. Reynolds, A. D. Smith, E. T. Smith, and I. P. Woiwod. "An aerial netting study of insects migrating at high altitude over England." Bulletin of Entomological Research 94, no. 2 (April 2004): 123–36. http://dx.doi.org/10.1079/ber2004287.

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AbstractDay and night sampling of windborne arthropods at a height of 200 m above ground was undertaken at Cardington, Bedfordshire, UK, during July 1999, 2000 and 2002, using a net supported by a tethered balloon. The results from this study are compared with those from the classic aerial sampling programmes carried out by Hardy, Freeman and colleagues over the UK and North Sea in the 1930s. In the present study, aerial netting was undertaken at night as well as daytime, and so the diel periodicity of migration could be investigated, and comparisons made with the results from Lewis and Taylor

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Molina, P., M. Blázquez, J. Sastre, and I. Colomina. "PRECISION ANALYSIS OF POINT-AND-SCALE PHOTOGRAMMETRIC MEASUREMENTS FOR CORRIDOR MAPPING: PRELIMINARY RESULTS." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-3/W4 (March 17, 2016): 85–90. http://dx.doi.org/10.5194/isprs-archives-xl-3-w4-85-2016.

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This paper addresses the key aspects of the sensor orientation and calibration approach within the mapKITE concept for corridor mapping, focusing on the contribution analysis of point-and-scale measurements of kinematic ground control points. MapKITE is a new mobile, simultaneous terrestrial and aerial, geodata acquisition and post-processing method. On one hand, the acquisition system is a tandem composed of a terrestrial mobile mapping system and an unmanned aerial system, the latter equipped with a remote sensing payload, and linked through a 'virtual tether', that is, a real-time waypoint

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Strand, Tara, Brian Gullett, Shawn Urbanski, Susan O'Neill, Brian Potter, Johanna Aurell, Amara Holder, Narasimhan Larkin, Mark Moore, and Miriam Rorig. "Grassland and forest understorey biomass emissions from prescribed fires in the south-eastern United States – RxCADRE 2012." International Journal of Wildland Fire 25, no. 1 (2016): 102. http://dx.doi.org/10.1071/wf14166.

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Smoke measurements were made during grass and forest understorey prescribed fires as part of a comprehensive programme to understand fire and smoke behaviour. Instruments deployed on the ground, airplane and tethered aerostat platforms characterised the smoke plumes through measurements of carbon dioxide (CO2), carbon monoxide (CO), methane (CH4) and particulate matter (PM), and measurements of optical properties. Distinctions were observed in aerial and ground-based measurements, with aerial measurements exhibiting smaller particle size distributions and PM emission factors, likely due to par

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Karásek, Matěj, Florian T. Muijres, Christophe De Wagter, Bart D. W. Remes, and Guido C. H. E. de Croon. "A tailless aerial robotic flapper reveals that flies use torque coupling in rapid banked turns." Science 361, no. 6407 (September 13, 2018): 1089–94. http://dx.doi.org/10.1126/science.aat0350.

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Insects are among the most agile natural flyers. Hypotheses on their flight control cannot always be validated by experiments with animals or tethered robots. To this end, we developed a programmable and agile autonomous free-flying robot controlled through bio-inspired motion changes of its flapping wings. Despite being 55 times the size of a fruit fly, the robot can accurately mimic the rapid escape maneuvers of flies, including a correcting yaw rotation toward the escape heading. Because the robot’s yaw control was turned off, we showed that these yaw rotations result from passive, translat

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Marden, J. H., M. R. Wolf, and K. E. Weber. "Aerial performance of Drosophila melanogaster from populations selected for upwind flight ability." Journal of Experimental Biology 200, no. 21 (November 1, 1997): 2747–55. http://dx.doi.org/10.1242/jeb.200.21.2747.

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A computerized system for three-dimensional tracking of large numbers of individual free-flying insects was used to assess the performance of Drosophila melanogaster from populations that had undergone 160 generations of selection for upwind flight ability. Compared with control lines, the selected lines showed significant increases in mean flight velocity, decreases in angular trajectory and a significant change in the interaction between velocity and angular trajectory. Maximal flight velocity was apparent as a sharply defined upper boundary of the distribution of horizontal and vertical vel

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ISHII, Tohru, Chiaki TODOROKI, Yasutake TAKAHASHI, Yoichiro MAEDA, and Takayuki NAKAMURA. "2A1-A04 Development and Autonomous Flight Control for Tethered Flying Robot(Aerial Robot and Mechatronics (1))." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2014 (2014): _2A1—A04_1—_2A1—A04_4. http://dx.doi.org/10.1299/jsmermd.2014._2a1-a04_1.

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Tognon, Marco, Sanket S. Dash, and Antonio Franchi. "Observer-Based Control of Position and Tension for an Aerial Robot Tethered to a Moving Platform." IEEE Robotics and Automation Letters 1, no. 2 (July 2016): 732–37. http://dx.doi.org/10.1109/lra.2016.2523599.

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Kishk, Mustafa, Ahmed Bader, and Mohamed-Slim Alouini. "Aerial Base Station Deployment in 6G Cellular Networks Using Tethered Drones: The Mobility and Endurance Tradeoff." IEEE Vehicular Technology Magazine 15, no. 4 (December 2020): 103–11. http://dx.doi.org/10.1109/mvt.2020.3017885.

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Winstead, Tomon, Winstead, and Mikolay. "Capturing aerial insects available as food for chimney swifts in western Pennsylvania using a tethered balloon." Journal of the Pennsylvania Academy of Science 94, no. 1-2 (2021): 103. http://dx.doi.org/10.5325/jpennacadscie.94.1-2.0103.

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Molina, P., M. Blázquez, J. Sastre, and I. Colomina. "PRECISION ANALYSIS OF POINT-AND-SCALE PHOTOGRAMMETRIC MEASUREMENTS FOR CORRIDOR MAPPING: PRELIMINARY RESULTS." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-3/W4 (March 17, 2016): 85–90. http://dx.doi.org/10.5194/isprsarchives-xl-3-w4-85-2016.

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This paper addresses the key aspects of the sensor orientation and calibration approach within the mapKITE concept for corridor mapping, focusing on the contribution analysis of point-and-scale measurements of kinematic ground control points. MapKITE is a new mobile, simultaneous terrestrial and aerial, geodata acquisition and post-processing method. On one hand, the acquisition system is a tandem composed of a terrestrial mobile mapping system and an unmanned aerial system, the latter equipped with a remote sensing payload, and linked through a 'virtual tether', that is, a real-time waypoint

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Stoffberg, Samantha, and David S. Jacobs. "The influence of wing morphology and echolocation on the gleaning ability of the insectivorous bat Myotis tricolor." Canadian Journal of Zoology 82, no. 12 (December 1, 2004): 1854–63. http://dx.doi.org/10.1139/z04-172.

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On the basis of its external morphology, Myotis tricolor (Temminck, 1832) should be able to both aerial-feed and glean. Furthermore, this bat is known to use broadband calls of short duration, reinforcing the prediction that it gleans. However, results from this study indicate that M. tricolor does not commonly glean. This conclusion was reached after studying the foraging behaviour of M. tricolor in a flight room. We presented M. tricolor with mealworms, moths, mole crickets, beetles, and cicadas in a variety of ways that required either gleaning and (or) aerial feeding. Although M. tricolor

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Molina, P., M. Blázquez, J. Sastre, and I. Colomina. "mapKITE: A NEW PARADIGM FOR SIMULTANEOUS AERIAL AND TERRESTRIAL GEODATA ACQUISITION AND MAPPING." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B1 (June 6, 2016): 957–62. http://dx.doi.org/10.5194/isprsarchives-xli-b1-957-2016.

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We introduce a new mobile, simultaneous terrestrial and aerial, geodata collection and post-processing method: mapKITE. By combining two mapping technologies such as terrestrial mobile mapping and unmanned aircraft aerial mapping, geodata are simultaneously acquired from air and ground. More in detail, a mapKITE geodata acquisition system consists on an unmanned aircraft and a terrestrial vehicle, which hosts the ground control station. By means of a real-time navigation system on the terrestrial vehicle, real-time waypoints are sent to the aircraft from the ground. By doing so, the aircraft i

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Molina, P., M. Blázquez, J. Sastre, and I. Colomina. "mapKITE: A NEW PARADIGM FOR SIMULTANEOUS AERIAL AND TERRESTRIAL GEODATA ACQUISITION AND MAPPING." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B1 (June 6, 2016): 957–62. http://dx.doi.org/10.5194/isprs-archives-xli-b1-957-2016.

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We introduce a new mobile, simultaneous terrestrial and aerial, geodata collection and post-processing method: mapKITE. By combining two mapping technologies such as terrestrial mobile mapping and unmanned aircraft aerial mapping, geodata are simultaneously acquired from air and ground. More in detail, a mapKITE geodata acquisition system consists on an unmanned aircraft and a terrestrial vehicle, which hosts the ground control station. By means of a real-time navigation system on the terrestrial vehicle, real-time waypoints are sent to the aircraft from the ground. By doing so, the aircraft i

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Mei, Fan, Gavin McMeeking, Mikhail Pekour, Ru-Shan Gao, Gourihar Kulkarni, Swarup China, Hagen Telg, Darielle Dexheimer, Jason Tomlinson, and Beat Schmid. "Performance Assessment of Portable Optical Particle Spectrometer (POPS)." Sensors 20, no. 21 (November 5, 2020): 6294. http://dx.doi.org/10.3390/s20216294.

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Accurate representation of atmospheric aerosol properties is a long-standing problem in atmospheric research. Modern pilotless aerial systems provide a new platform for atmospheric in situ measurement. However, small airborne platforms require miniaturized instrumentation due to apparent size, power, and weight limitations. A Portable Optical Particle Spectrometer (POPS) is an emerged instrument to measure ambient aerosol size distribution with high time and size resolution, designed for deployment on a small unmanned aerial system (UAS) or tethered balloon system (TBS) platforms. This study e

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Tognon, Marco, Rachid Alami, and Bruno Siciliano. "Physical Human-Robot Interaction With a Tethered Aerial Vehicle: Application to a Force-Based Human Guiding Problem." IEEE Transactions on Robotics 37, no. 3 (June 2021): 723–34. http://dx.doi.org/10.1109/tro.2020.3038700.

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Dexheimer, Darielle, Martin Airey, Erika Roesler, Casey Longbottom, Keri Nicoll, Stefan Kneifel, Fan Mei, R. Giles Harrison, Graeme Marlton, and Paul D. Williams. "Evaluation of ARM tethered-balloon system instrumentation for supercooled liquid water and distributed temperature sensing in mixed-phase Arctic clouds." Atmospheric Measurement Techniques 12, no. 12 (December 20, 2019): 6845–64. http://dx.doi.org/10.5194/amt-12-6845-2019.

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Abstract. A tethered-balloon system (TBS) has been developed and is being operated by Sandia National Laboratories (SNL) on behalf of the U.S. Department of Energy's (DOE) Atmospheric Radiation Measurement (ARM) User Facility in order to collect in situ atmospheric measurements within mixed-phase Arctic clouds. Periodic tethered-balloon flights have been conducted since 2015 within restricted airspace at ARM's Advanced Mobile Facility 3 (AMF3) in Oliktok Point, Alaska, as part of the AALCO (Aerial Assessment of Liquid in Clouds at Oliktok), ERASMUS (Evaluation of Routine Atmospheric Sounding M

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Sujandi, Eko Adi Prasetyanto, Dae-Soo Han, Seung-Cheol Lee, and Sang-Eon Park. "Immobilization of Co(III) using tethered cyclam ligand on SBA-15 mesoporous silica for aerial oxidation of ethylbenzene." Catalysis Today 141, no. 3-4 (March 2009): 374–77. http://dx.doi.org/10.1016/j.cattod.2008.05.031.

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Jung, Sunghun. "Development and Verification of Hybrid Power Controller Using Indoor HIL Test for the Solar UAV." Energies 13, no. 8 (April 24, 2020): 2110. http://dx.doi.org/10.3390/en13082110.

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A hybrid power system (HPS) is developed for the photovoltaic (PV) powered and tethered multirotor unmanned aerial vehicle (UAV) based on the robot operating system (ROS) and verified using an indoor hardware-in-the-loop (HIL) test. All the processes, including a UAV flight mode change (i.e., takeoff, hovering, and landing) and power flow control (consisting of PV modules, a LiPo battery pack, and a UAV) are completely automated using a combination of Pixhawk 2.1 and the Raspberry Pi 3 Model B (RPi 3B). Once the indoor HIL test starts, (1) the UAV takes off and hovers with a preassigned 10 m a

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JOUAULT, CORENTIN, and ANDRÉ NEL. "The oldest record of window fly supports a Gondwanan origin of the family (Diptera: Scenopinidae)." Palaeoentomology 3, no. 5 (October 30, 2020): 483–91. http://dx.doi.org/10.11646/palaeoentomology.3.5.6.

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Palaeobiogeographic hypotheses need to be based on accurate palaeomaps and phylogenies of the concerned clades with a fossil record as complete as possible. Here we re-analyse the palaeobiogeography of the small fly family Scenopinidae, based on its first record in the mid-Cretaceous Burmese amber that we describe herein as Burmaprorates alagracilis gen. et sp. nov. and we assign to the subfamily Proratinae. At that time, the corresponding palaeobiota was an isolated island in the Southern part of the Tethys Ocean far away from the Laurasian plate and with general wind circulation unfavorable

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de Boer, Gijs, Mark Ivey, Beat Schmid, Dale Lawrence, Darielle Dexheimer, Fan Mei, John Hubbe, et al. "A Bird’s-Eye View: Development of an Operational ARM Unmanned Aerial Capability for Atmospheric Research in Arctic Alaska." Bulletin of the American Meteorological Society 99, no. 6 (June 2018): 1197–212. http://dx.doi.org/10.1175/bams-d-17-0156.1.

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AbstractThorough understanding of aerosols, clouds, boundary layer structure, and radiation is required to improve the representation of the Arctic atmosphere in weather forecasting and climate models. To develop such understanding, new perspectives are needed to provide details on the vertical structure and spatial variability of key atmospheric properties, along with information over difficult-to-reach surfaces such as newly forming sea ice. Over the last three years, the U.S. Department of Energy (DOE) has supported various flight campaigns using unmanned aircraft systems [UASs, also known

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Yager, D. D., and M. L. May. "Ultrasound-triggered, flight-gated evasive maneuvers in the praying mantis Parasphendale agrionina. II. Tethered flight." Journal of Experimental Biology 152, no. 1 (September 1, 1990): 41–58. http://dx.doi.org/10.1242/jeb.152.1.41.

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In tethered flight, Parasphendale agrionina (Gerst.) males respond to ultrasonic stimuli with a unique suite of behaviors that includes full extension of the forelegs, strong dorsiflexion of the abdomen, a head roll, a 5% decrease in wingbeat frequency and a 33% increase in forewing excursion. Latency for the foreleg extension averages 66 ms while the latency to onset of yaw is 174 ms. The direction of the turn is unrelated to the location of the speaker. Yaw magnitude and latency are only weakly related to sound pressure level, and variability in these and other parameters is high. The behavi

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Schuyler, Travis J., Sean C. C. Bailey, and Marcelo I. Guzman. "Monitoring Tropospheric Gases with Small Unmanned Aerial Systems (sUAS) during the Second CLOUDMAP Flight Campaign." Atmosphere 10, no. 8 (July 27, 2019): 434. http://dx.doi.org/10.3390/atmos10080434.

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Small unmanned aerial systems (sUAS) are a promising technology for atmospheric monitoring of trace atmospheric gases. While sUAS can be navigated to provide information with higher spatiotemporal resolution than tethered balloons, they can also bridge the gap between the regions of the atmospheric boundary layer (ABL) sampled by ground stations and manned aircraft. Additionally, sUAS can be effectively employed in the petroleum industry, e.g., to constrain leaking regions of hydrocarbons from long gasoducts. Herein, sUAS are demonstrated to be a valuable technology for studying the concentrat

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Pitt, D. G., and G. R. Glover. "Large-scale 35-mm aerial photographs for assessment of vegetation-management research plots in eastern Canada." Canadian Journal of Forest Research 23, no. 10 (October 1, 1993): 2159–69. http://dx.doi.org/10.1139/x93-269.

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Two 35-mm cameras were mounted on a boom and suspended from a tethered helium-filled blimp to obtain nominally vertical aerial photographs (1:828 and 1:414 contact scale) of vegetation-management research plots. Photo and ground estimates of woody plant crown area (m2/ha) and rootstock density (number/ha) were compared for several experimental vegetation-control treatments. Horizontal point-sampling estimates of total crown area made directly on 1:93 scale prints (enlarged from 1:414) correlated strongly with equivalent estimates made on the ground (n = 62, r2 = 0.97). An estimated 20 ground-t

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Palomaki, Ross T., Nathan T. Rose, Michael van den Bossche, Thomas J. Sherman, and Stephan F. J. De Wekker. "Wind Estimation in the Lower Atmosphere Using Multirotor Aircraft." Journal of Atmospheric and Oceanic Technology 34, no. 5 (May 2017): 1183–91. http://dx.doi.org/10.1175/jtech-d-16-0177.1.

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AbstractUnmanned aerial vehicles are increasingly used to study atmospheric structure and dynamics. While much emphasis has been on the development of fixed-wing unmanned aircraft for atmospheric investigations, the use of multirotor aircraft is relatively unexplored, especially for capturing atmospheric winds. The purpose of this article is to demonstrate the efficacy of estimating wind speed and direction with 1) a direct approach using a sonic anemometer mounted on top of a hexacopter and 2) an indirect approach using attitude data from a quadcopter. The data are collected by the multirotor

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Li, Xiao-Bing, Dongfang Wang, Qing-Chang Lu, Zhong-Ren Peng, Qingyan Fu, Xiao-Ming Hu, Juntao Huo, et al. "Three-dimensional analysis of ozone and PM2.5 distributions obtained by observations of tethered balloon and unmanned aerial vehicle in Shanghai, China." Stochastic Environmental Research and Risk Assessment 32, no. 5 (March 5, 2018): 1189–203. http://dx.doi.org/10.1007/s00477-018-1524-2.

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Shah, Adil, Joseph R. Pitt, Hugo Ricketts, J. Brian Leen, Paul I. Williams, Khristopher Kabbabe, Martin W. Gallagher, and Grant Allen. "Testing the near-field Gaussian plume inversion flux quantification technique using unmanned aerial vehicle sampling." Atmospheric Measurement Techniques 13, no. 3 (March 30, 2020): 1467–84. http://dx.doi.org/10.5194/amt-13-1467-2020.

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Abstract. Methane emission fluxes from many facility-scale sources may be poorly quantified, potentially leading to uncertainties in the global methane budget. Accurate atmospheric measurement-based flux quantification is urgently required to address this. This paper describes the first test (using unbiased sampling) of a near-field Gaussian plume inversion (NGI) technique, suitable for facility-scale flux quantification, using a controlled release of methane gas. Two unmanned-aerial-vehicle (UAV) platforms were used to perform 22 flight surveys downwind of a point-source methane gas release f

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Renard, J. B., F. Dulac, G. Berthet, T. Lurton, D. Vignelles, F. Jégou, T. Tonnelier, et al. "LOAC: a small aerosol optical counter/sizer for ground-based and balloon measurements of the size distribution and nature of atmospheric particles – Part 2: First results from balloon and unmanned aerial vehicle flights." Atmospheric Measurement Techniques Discussions 8, no. 9 (September 28, 2015): 10057–96. http://dx.doi.org/10.5194/amtd-8-10057-2015.

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Abstract. In the companion paper (Renard et al., 2015), we have described and evaluated a new versatile optical particle counter/sizer named LOAC (Light Optical Aerosol Counter) based on scattering measurements at angles of 12 and 60° that allows some topology identification of particles (droplets, carbonaceous, salts, and mineral dust) in addition to size segregated counting in a large diameter range from 0.2 up to possibly more than 100 μm depending on sampling conditions. Its capabilities overpass those of preceding optical particle counters (OPCs) allowing the characterization of all kind

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