Results 21 to 30 of about 11,923 (261)
A Case Study of Stratus Cloud Properties Using In Situ Aircraft Observations over Huanghua, China
Atmosphere, 2019 Cloud liquid water content (LWC) and droplet effective radius (re) have an important influence on cloud physical processes and optical characteristics. The microphysical properties of a three-layer pure liquid stratus were measured by aircraft probes on ...
Chuanfeng Zhao, Lijun Zhao, Xiaobo Dong
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Auto Sweptback Wing Based on Low Scattering Demand for an Unmanned Aerial Vehicle in Phase Flight
Aerospace, 2022 In order to study the optimal sweepback angle when a variant unmanned aerial vehicle (UAV) exhibits a low radar cross-section (RCS) indicator during phase flight, an auto sweep scheme based on electromagnetic scattering evaluation and an improved ...
Zeyang Zhou, Jun Huang
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METHODS OF PRECISE AIRCRAFT POSITIONING IN THE GPS SYSTEM WITH AN APPLICATION OF THE TROPOSPHERE CORRECTION [PDF]
Scientific Journal of Silesian University of Technology. Series Transport, 2020 This article presents the results of studies concerning the designation of accuracy in aircraft navigation positioning by means of the SPP and the SBAS code methods.
Małgorzata KIRSCHENSTEIN +2 more
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Research on a Measurement Method for Middle-Infrared Radiation Characteristics of Aircraft
Machines, 2022 Aiming at the problem wherein temperature inversion accuracy is unstable due to the major differences in atmospheric transmittance under various observation paths, a method for measuring radiation characteristics of an aircraft engine’s hot parts and ...
Xuan Deng +3 more
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Locating industrial VOC sources with aircraft observations
Environmental Pollution, 2011 Observation and characterization of environmental pollution, focussing on Volatile Organic Compounds (VOCs), in a high-risk industrial area, are particularly important in order to provide indications on a safe level of exposure, indicate eventual priorities and advise on policy interventions.
P Toscano +8 more
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Extended Signal-Correction Observer and Application to Aircraft Navigation [PDF]
IEEE Transactions on Industrial Electronics, 2020 In this paper, an extended signal-correction observer (ESCO) is presented for signals correction and estimation, which not only can reject the large measurement error, but also the system uncertainty can be estimated, in spite of the existence of intense stochastic non-Gaussian noise.
Xinhua Wang 0001, Weicheng Wang
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Aircraft navigation based on differentiation–integration observer
Aerospace Science and Technology, 2017 In this paper, a generalized differentiation-integration observer is presented based on sensors selection. The proposed differentiation-integration observer can estimate the multiple integrals and high-order derivatives of a signal, synchronously. The parameters selection rules are presented for the differentiation-integration observer. The theoretical
Wang, Xinhua, Cai, Lilong
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Atmospheric and Oceanic Science Letters, 2020 The prediction of the particle number concentration and liquid/ice water content of cloud is significant for many aspects of atmospheric science. However, given the uncertainties in the initial and boundary conditions and imperfections of microphysical ...
Yuan FU +4 more
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Collaborative Localization Method Based on Hybrid Network for Aerial Swarm
AerospaceIn light of the satellite rejection environment and how aircraft can obtain high-precision positioning, this paper proposes a collaborative correction algorithm for aircraft based on the rank-defect network.
Rong Wang +4 more
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Atmospheric and Oceanic Science Letters, 2017 Based on Droplet Measurement Technologies data of a pre-stratiform-cloud precipitation event in Ganzhou, Jiangxi Province, on 11 November 2015, and combined with radar data, this paper comprehensively analyzes the macro- and microphysical characteristics
Yuan Fu, Heng-Chi Lei
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