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Title: Sondarea ionosferei cu semnale modulate liniar în frecvenţă [Articol]
Authors: Plohotniuc, Eugeniu
Pascaru, Mihail
Keywords: sondarea ionosferei
semnale modulate liniar în frecvenţă
Issue Date: 2004
Publisher: USARB
Citation: Plohotniuc, Eugen. Sondarea ionosferei cu semnale modulate liniar în frecvenţă / Eugen Plohotniuc, Mihail Pascaru // Analele Ştiinţifice ale Universităţii „Alecu Russo” din Bălţi. Serie nouă. – Bălţi, 2004. – Fasc. a, t. 20 : Tehnică, Fizică, Matematică şi Informatică. – P. 52-61. – ISBN 9975-931-35-9.
Abstract: The results of taking soundings of ionosphere on the routes Ioshcar-Ola-Balti, Dushanbe-Balti, and Habarovsk- Balti with linear-frequency-modulated signals are presented. Irradiation with power 200 W and reception of signals were carried out in the frequency band 1...30 MHz by frequency change speed djldt = 483.3 kHz's. Dependences of maximum and minimum magnitudes of observed frequencies on time for 1F2, 2F2, and 3F2 modes, dependences of one-mode propagation regime bands on time, and dependences of intensity of received signal on frequency and time are obtained.
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