Search results for "Elevation angle"

showing 3 items of 3 documents

Change in take-off elevation angle after limb autotomy mitigates the reduction in jumping distance in rice grasshoppersOxya yezoensis

2013

Autotomy is the ability to spontaneously self-amputate a limb or other appendage, often as a reflexive action. This limb amputation typically occurs as a specialized defensive response to an attack from a predator and thereby enables the prey to escape from predation. Despite the benefits of escape, autotomized organisms lose the body part and its associated function. Here, we investigated the jumping behavior and performance of one-leg-autotomized and intact rice grasshoppers, Oxya yezoensis, to examine changes in jumping behavior after autotomy. The take-off elevation of autotomized grasshoppers was 7.8° lower than in intact grasshoppers, resulting in nearly a 45° angle of take-off, which…

Appendagemedicine.medical_treatmentZoologyElevation angleAnatomyLimb amputationBiologymedicine.disease_causePredationJumpingInsect SciencemedicinePredatorAutotomyEcology Evolution Behavior and SystematicsReduction (orthopedic surgery)Entomological Science
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Angle and Height Estimation Technique for Aerial Vehicles using mmWave FMCW Radar

2021

In this article, we present a novel angle and height estimation technique for aerial vehicles using mmWave frequency modulated continuous wave (FMCW) Radar. In the proposed method, Radar’s antennas are oriented vertically to measure the elevation angle of arrival of the aerial vehicle from ground station. Height of the aerial vehicle and horizontal distance of the aerial vehicle from Radar station on ground are estimated using the measured radial range and the elevation angle of arrival.

Computer science010401 analytical chemistryElevation angle020206 networking & telecommunications02 engineering and technology01 natural sciences0104 chemical scienceslaw.inventionComputer Science::RoboticsContinuous-wave radarGround stationRadar antennaslawRange (aeronautics)0202 electrical engineering electronic engineering information engineeringContinuous waveRadarFrequency modulationPhysics::Atmospheric and Oceanic PhysicsRemote sensing2021 International Conference on COMmunication Systems & NETworkS (COMSNETS)
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Localization of Multi-Class On-Road and Aerial Targets Using mmWave FMCW Radar

2021

mmWave radars play a vital role in autonomous systems, such as unmanned aerial vehicles (UAVs), unmanned surface vehicles (USVs), ground station control and monitoring systems. The challenging task when using mmWave radars is to estimate the accurate angle of arrival (AoA) of the targets, due to the limited number of receivers. In this paper, we present a novel AoA estimation technique, using mmWave FMCW radars operating in the frequency range 77–81 GHz by utilizing the mechanical rotation. Rotating the radar also increases the field of view in both azimuth and elevation. The proposed method estimates the AoA of the targets, using only a single transmitter and receiver. The measurements are…

mmWave radarTK7800-8360Computer Networks and CommunicationsComputer scienceangle of arrival (AoA)Field of viewFMCW radarlocalizationlaw.inventionlawAngle of arrivalmulti-class targetsElectrical and Electronic EngineeringRadarVDP::Teknologi: 500::Informasjons- og kommunikasjonsteknologi: 550Remote sensingTransmitterElevationmmWave radar; FMCW radar; localization; multi-class targets; angle of arrival (AoA); azimuth angle; elevation angle; range-angle maps; morphological operators; unmanned aerial vehicle localization; UAV localizationazimuth angleDroneAzimuthContinuous-wave radarHardware and ArchitectureControl and Systems EngineeringSignal ProcessingElectronicsElectronics; Volume 10; Issue 23; Pages: 2905
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