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Your search keyword '"Qian Qiaoyuan"' showing total 8 results
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8 results on '"Qian Qiaoyuan"'

3. Effects of Solar Radiation on Satellite Antenna

Author

Wen Mo and Qian Qiaoyuan

Subjects
Physics, Beam waveguide antenna, Directional antenna, business.industry, Loop antenna, Antenna measurement, Radiation pattern, Periscope antenna, Optics, Physics::Space Physics, Antenna (radio), business, Omnidirectional antenna, Computer Science::Information Theory, Remote sensing
Abstract

This paper is mainly about the effects on the satellite antenna performance of solar radiation. Polar orbit satellite works in the environment with frequent temperature change, its surface temperature varies significantly. This is mainly because the difference of solar radiation influence during its course. That means antennas that fixed on surface plate of the satellite have to endure such temperature variation. Normally, antenna is made of metal material with good conduction performance, which will change its shape with temperature variation. So, it is necessary to analyze the response of antenna to the environmental temperature change.

Published
2006

4. Error of measurement of radio-brightness temperature of the underlying surface during space monitoring of the Earth

Author

Lu Liqing, Y.B. Bragina, V.P. Sgibnev, N.S. Maslova, Yang Weizhong, E.I. Ermakov, Qian Qiaoyuan, I.V. Bragin, I.A. Jeltikov, M.B. Kamenkov, S.I. Bragin, A.B. Morozov, V.F. Mikhailov, and V.V. Tsutskov

Subjects
Surface (mathematics), Physics, Observational error, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Cosmology and Extragalactic Astrophysics, Space (mathematics), Optics, Remote sensing (archaeology), Brightness temperature, Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, business, Earth (classical element), Background radiation, Remote sensing
Abstract

The authors consider the main components of the error of measurement of the radio-brightness temperature of the Earth, including the background radiation of the Sun, and give an example of calculation for different reception frequencies.

Published
2002

5. Antenna sub-system of the multi-chanel scanning radiometer

Author

V.V. Tsutskov, Qian Qiaoyuan, V.I. Gusevsky, V.P. Sgibnev, Chen Miaoxing, I.V. Bragin, and S.I. Bragin

Subjects
Radiometer, Materials science, Directional antenna, Reflective array antenna, Conformal antenna, Astrophysics::Instrumentation and Methods for Astrophysics, Slot antenna, Feed horn, Physics::Geophysics, Horn antenna, Astrophysics::Earth and Planetary Astrophysics, Physics::Atmospheric and Oceanic Physics, Microwave, Computer Science::Information Theory, Remote sensing
Abstract

The authors give the results of the designing of the antenna sub-system of the multi-channel microwave scanning radiometer designed for measurement of the temperature patterns of the Earth's surface and installed on a low-orbit satellite.

Published
2000

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