Asymmetric signal level distribution due to tropospheric scintillation
نویسندگان
چکیده
منابع مشابه
Evaluation of Deep Signal Fading Effects Due to Ionospheric Scintillation on GPS Aviation Receivers
Deep and frequent GPS signal fading due to strong ionospheric scintillation is major concern for aircraft navigation in the equatorial region during solar maximum periods. Deep signal fading can break a receiver’s carrier tracking lock on a satellite channel and the satellite cannot be used for position solution until a receiver reacquires the lost channel. Frequent signal fading also causes fr...
متن کاملCorrelation of GPS signal fades due to ionospheric scintillation for aviation applications
Deep and frequent Global Positioning System (GPS) signal fading due to strong ionospheric scintillation is a major concern for GPSguided aviation in equatorial areas during high solar activity. A GPS aviation receiver may lose carrier tracking lock under deep fading, and a lost channel cannot be used for position calculation until lock is reestablished. Hence, frequent loss of lock due to frequ...
متن کاملCharacteristics of Deep Gps Signal Fading Due to Ionospheric Scintillation for Aviation Receiver Design
Aircraft navigation based on GPS (Global Positioning System) and WAAS (Wide Area Augmentation System) requires both code and carrier measurements to calculate the position estimate [1]. A GPS receiver’s carrier tracking loop is weaker than code tracking loop. Thus, carrier lock can more easily be broken under deep signal fading caused by ionospheric scintillation. If a receiver cannot track cod...
متن کاملComparison of tropospheric scintillation prediction models of the Indonesian climate
Tropospheric scintillation is a phenomenon that will cause signal degradation in satellite communication with low fade margin. Few studies of scintillation have been conducted in tropical regions. To analyze tropospheric scintillation, we obtain data from a satellite link installed at Bandung, Indonesia, at an elevation angle of 64.7° and a frequency of 12.247 GHz from 1999 to 2000. The data ar...
متن کاملRadio Scintillation Due to Discontinuities in the Interstellar Plasma Density
We develop the theory of interstellar scintillation as caused by an irregular plasma having a power-law spatial density spectrum with a spectral exponent of β = 4 corresponding to a medium with abrupt changes in its density. An “outer scale” is included in the model representing the typical scale over which the density of the medium remains uniform. Such a spectrum could be used to model plasma...
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ژورنال
عنوان ژورنال: Electronics Letters
سال: 1998
ISSN: 0013-5194
DOI: 10.1049/el:19980805