Results 21 to 30 of about 10,801 (245)

Evaluation of Cloud Microphysical Properties Derived From MODIS and Himawari‐8 Using In Situ Aircraft Measurements Over the Southern Ocean

open access: yesEarth and Space Science, 2020
Cloud microphysical properties from aircraft measurements during the Southern Ocean Clouds, Radiation, Aerosol Transport Experimental Study are used to evaluate the cloud products from the geostationary satellite Himawari‐8 (H‐8) and the polar‐orbiting ...
Lijun Zhao   +4 more
doaj   +1 more source

Aircraft navigation based on differentiation–integration observer

open access: yesAerospace 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
openaire   +3 more sources

Aircraft observation of cloud microphysical characteristics of pre-stratiform-cloud precipitation in Jiangxi Province

open access: yesAtmospheric 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
doaj   +1 more source

A Case Study of Stratus Cloud Properties Using In Situ Aircraft Observations over Huanghua, China

open access: yesAtmosphere, 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
doaj   +1 more source

Comparison of aircraft observations with ensemble forecast model results in terms of the microphysical characteristics of stratiform precipitation

open access: yesAtmospheric 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
doaj   +1 more source

Monitor for Anti-Aircraft Guidance and Observation Systems [PDF]

open access: yesProblemy Mechatroniki, 2019
The fire control system operator’s monitor unit displays the video feed from online video cameras and fire control system-generated on-screen data overlays.
Rafał KRUK, Zbigniew REMPAŁA
doaj   +1 more source

Research on a Measurement Method for Middle-Infrared Radiation Characteristics of Aircraft

open access: yesMachines, 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
doaj   +1 more source

Comparing diagnosed observation uncertainties with independent estimates: A case study using aircraft‐based observations and a convection‐permitting data assimilation system

open access: yesAtmospheric Science Letters, 2021
Aircraft can report in situ observations of the ambient temperature by using aircraft meteorological data relay (AMDAR) or these can be derived using mode‐select enhanced tracking data (Mode‐S EHS).
Andrew K. Mirza   +5 more
doaj   +1 more source

Microwave observations of sea state from aircraft [PDF]

open access: yesQuarterly Journal of the Royal Meteorological Society, 1969
AbstractMeasurements of the thermal radiation emitted by natural water surfaces at a wavelength of 1·55 cm have been measured from aircraft at up to 12 km altitude.The dependence of the radiation on surface roughness is studied in view of its possible importance to satellite observation of sea state.
W. Nordberg, J. Conaway, P. Thaddeus
openaire   +1 more source

Collaborative Localization Method Based on Hybrid Network for Aerial Swarm

open access: yesAerospace
In 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
doaj   +1 more source

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