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<strong>Ionospheric scintillation characteristics in IRNSS L5 and S-band signals</strong>

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Title Statement <strong>Ionospheric scintillation characteristics in IRNSS L5 and S-band signals</strong>
 
Added Entry - Uncontrolled Name SUJIMOL, M R ; ISRO
SHAHANA, K ; ISRO
 
Uncontrolled Index Term wave propagation in ionosphere;radio wave propagation through non-ionized media; winds and motions in lower; middle and upper atmospheres;
Ionospheric scintillation;Amplitude scintillation;S4 index
 
Summary, etc. <p><span>Ionospheric scintillation is a common phenomenon observed over the low latitude Indian region. It occurs due to the rapid fluctuations in phase and amplitude of the signal and affects Global Navigation Satellite Systems (GNSS) very severely, especially in L-band. Severe scintillation leads to loss of lock at the receiver, which affects user position accuracy. Ionospheric scintillation mainly depends on solar cycle, user latitude, local time, season and elevation angle of the satellite. It also depends on the frequency of the transmitted signal. Usually, lower frequencies experience higher scintillation at ionosphere. In this paper, ionospheric amplitude scintillation effect on Indian Regional Navigation Satellite System (IRNSS) L5 and S-band frequencies is studied on the basis of computed S</span><span>4</span><span> index from Carrier to Noise (C/No) ratio measurements from IRNSS receivers installed at New Delhi and Ahmedabad. A comparison of L5 and S-band scintillation is done. A confirmation of scintillation phenomenon is also carried out using co-located GPS Septentrio (PolarRxS REO) receiver at frequency L1. It is, further, found that the scintillation occurrence is mostly in post sunset periods and may result in frequent loss of lock at L5 band during these periods.</span></p>
 
Publication, Distribution, Etc. Indian Journal of Radio & Space Physics (IJRSP)
2018-04-12 13:08:00
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJRSP/article/view/17541
 
Data Source Entry Indian Journal of Radio & Space Physics (IJRSP); ##issue.vol## 46, ##issue.no## 1 (2017): Indian Journal of Radio & Space Physics
 
Language Note en
 
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