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2. Cluster II: výzkum magnetosféry Země

Creator:
Trávníček, P., Hellinger, P., Fiala, V., Souček, J., and Santolík, O.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
fyzika atmosféry, geofyzika, zemská magnetosféra, družice, atmospheric physics, geophysics, Earth magnetosphere, and satellites
Language:
Czech
Description:
P. Trávníček, P. Hellinger, V. Fiala, J. Souček, O. Santolík. and Obsahuje seznam literatury
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Družice DEMETER a experiment segmentová Langmuirova sonda

Creator:
Trávníček, P., Štverák, Š., Hellinger, P., Jásenský, V., Páral, J., and Souček, J.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
fyzika atmosféry, družice, atmospheric physics, and satellites
Language:
Czech
Description:
Ústav fyziky atmosféry Akademie věd České republiky vyvíjí ve spolupráci s pracovištěm ESTEC Evropské kosmické agentury ESA experiment segmentová Langmuirova sonda pro malou francouzskou družici DEMETER. Experiment umožní měření změn základních vlastností plazmatu v magnetosféře Země, jakými jsou změny částicové hustoty elektronů a protonů a teploty elektronů. Kromě těchto parametrů plazmatu obklopujících družici umožní přístroj měření potenciálu družice, tj. relativního náboje,který družice jako celek má vzhledem k okolnímu prostředí. Výsledky těchto měření pak budou spolu s měřeními ostatních experimentů využity ke studiu změn vlastností magnetosférického plazmatu způsobených elektromagnetickými jevy, které doprovázejí pozemská zemětřesení. and P. Trávníček, Š. Štverák, P. Hellinger, V. Jásenský, J. Páral, J. Souček.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

5. Ground-based automated comprehensive tests of the Intershock scientific instrumentation

Creator:
Babkin, V., Belikova, A., Dikareva, Zh., Fedorov, A., Grechko, T., Labge, M., Lazarev, V., Natenzon, M., Němeček, Z., Pesotskii, L., Rybjeva, N., A., Slabý, S., Stefanovich, A., Šafránková, J., Tomek, J., and Vitouš, V.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Instershock instrumentation, satellites, and on-board computers
Language:
Czech
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

7. Prognoz data - Part V: Solar X-ray flux in the 2.1.-4.2. keV band during the period April 26, 1985 - October 15, 1985

Creator:
Valníček,, B., Fárník, F., Sudová, J., Komárek, B., Likin, O., and Pisarenko, N.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
investigation, solar X-ray photometer, and satellites
Language:
Czech
Description:
Introduction: In April 1985 the Prognoz 10 satellite was launched wih the sixth Czechoslovak solar X-ray photometer of the Prognoz type (RF-2P) onboard. This publication represents a brief description of the instrument and survey plots of obtained data. Similar plots have been published in the four previous books containing data from the Prognoz 5, 6, 7, 8 and 9 experiments. The Prognoz 10 satellite was launched on April 26, 1985 into the orbit of apogee of 200 315 km and perigee of 420 km, inclination of 65° and orbital period of abour 96.4 hours. The photometer was in operation till October 15, 1895.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

8. Radio communication in astronautics from the geometrical point of view

Creator:
Chvojková, E.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
astronautics, satellites, and radio communication
Language:
Czech
Description:
The launching of man-made satellites required some new urgent scientific and technical investigations. One of them was the establishment of a simple method of determining the path of a ray, adapted for fixing the optimum condition at which a radio connection between any two points of the Universe can be realized. Recently the solution of three important radio-communication problems has been put on the list of urgent requirements: 1. The radio communication between any two points of the Earth surface at any time, season or solar activity. 2. The radio communication between any point of the Earth surface and any point of the Universe. 3. The connection between visitors of a smáli planet with a rare atmosphere, especially if one of them has disappeared below the horizon, up to the antipodal point. The theory of radio propagation, elaborated in Chapter 3, shows that the trajectory of a wave which is passing through a spherical ionized layer can generally be found by merely knowing the critical frequency ~ of the layer and the whole quantity of electrons present in the layer. (We need not to know the distribution of electrondensity diV/dr with height as it has been supposed previously.) Consequently, in order to gain the best information about a rádio trajectory it is necesary to know the critical frequency of the F2-layer anywhere on the Earth at any time season and solar activity (Chapter 1), to be able to predict the sunspot number (Chapter 2), to elaborate a simple but precise theory of radio propagation (Chapter 3). Taking into account the results of these three chapters we were able to elaborate a very practical method which made it possible to determine the best conditions for any terrestrial or astronautical connection. (Chapter 4.) The main idea of the first two chapters will be mentioned only briefly but the chapter 3 and 4 will be reproduced in greater detail. References to the equations or figures of the Russian text are indicated by three numbers: the chapter, the section and the equation, figure or advise on literature.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public