Results 251 to 260 of about 273,711 (279)

Small satellite SIGINT payload

Proceedings of the IEEE 2000 National Aerospace and Electronics Conference. NAECON 2000. Engineering Tomorrow (Cat. No.00CH37093), 2002
A history of in-orbit operation of fifteen low Earth orbit (LEO) satellites by the Surrey Space Centre has highlighted the usefulness to the civilian market of measuring and analysing the crowded RF spectrum from the LEO perspective. A desirable instrument would be a payload that performs spectral analysis of a wide frequency range rapidly and to a ...
P.E. Whittaker, M.S. Hodgart
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Small satellites for Earth observation — The German small satellite programme

Acta Astronautica, 2000
Abstract The German small satellite programme is introduced. The results of a small satellite workshop are presented. All actual German small satellite Earth observation missions are described. New opportunities will open for commercial missions and in the context of the new opportunity missions of ESA's Earth observation envelope programme.
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Small satellites EMC study

Advances in Space Research, 2001
Abstract The decreasing of weight and dimensions of the new generation of space vehicles — micro- and nanosatellites — allows us to place the sensors of scientific payload on short and simple booms or even on the satellite body. By this the electromagnetic cleanliness (EMC) of these satellites becomes a first priority question.
V. Korepanov, F. Dudkin, O. Melnik, K. Pajunpää   +3 more
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Modern small satellites projects

Proceedings of International Conference on Satellite Communications. ICSC'94, 2002
The advantages of using small satellites in space scientific and technological activity are discussed. These relatively cheap satellites are characterized by a mass from one kilogram up to several hundred kilograms, dimensions under 1 meter and a relatively simple set of scientific and auxiliary equipment.
M.Yu. Ovchinnikov, A.I. Dyachenko
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Small Circular Satellite RNAs

2017
The infectivity of small circular satellite RNAs (sc-satRNAs) depends on a helper virus. However, sc-satRNAs resemble viroids in several features, including the small (220!257 nt) and single-stranded genome, the accumulation in the infected host as covalently-closed circular RNAs, the replication through rolling-circle mechanisms based on RNA ...
Navarro B, Rubino L, Di Serio F
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Neptune's small inner satellites

Journal of Geophysical Research: Space Physics, 1991
Voyager 2 images revealed six small satellites orbiting within five planetary radii of Neptune. The largest, Proteus (1989N1), has a mean radius of 208 ± 8 km; the smallest, Naiad (1989N6), is 29 ± 6 km in radius. The four satellites for which reasonable radius measurements can be made all have geometric albedos (not accounting for opposition effects ...
P. Thomas, J. Veverka
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Small Is Beautiful? Legal Challenges of Small Satellites

2016
The development and operation of small satellites for various purposes is a recent phenomenon that poses new challenges to the regulatory framework of outer space activities. On the one hand, the involvement of more actors, including private entities and universities, in the area of space technology is welcome as it helps more countries and people to ...
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SMALL SATELLITES

1986
P. THOMAS, J. VEVERKA, S. DERMOTT
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A small coat for satellites

Nature Reviews Microbiology, 2023
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Small Planetary Satellites: Deimos

2012
We finish with perhaps one of the most challenging dynamical environments that can be encountered. That of a planetary satellite which has a strongly non-spherical shape. The prototypical examples of such satellites are the Martian moons Phobos and Deimos.
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