کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1766592 1020156 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimum parameter for estimating phase fluctuations on transionospheric signals at high latitudes
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
Optimum parameter for estimating phase fluctuations on transionospheric signals at high latitudes
چکیده انگلیسی

Transionospheric radio signals may experience fluctuations in their amplitude and phase due to irregularity in the spatial electron density distribution, referred to as scintillation. Ionospheric scintillation is responsible for transionospheric signal degradation that can affect the performance of satellite based navigation systems. Usually, the scintillation activity is measured by means of indices such as the normalised standard deviation of the received intensity S4 and the standard deviation of the received phase σϕ typically calculated over 1 min of data. Data from a GPS scintillation monitor based on 50 Hz measurements recorded at Dirigibile Italia Station (Ny-Alesund, Svalbard), in the frame of the ISACCO project (De Franceschi et al., 2006) are used to investigate possible adoption of an alternative parameter for the estimate of phase fluctuations: i.e., the standard deviation of the phase rate of change Sϕ. This parameter is shown to better correlate with S4 being much less detrending dependent than σϕ. The couple (S4, Sϕ) should be then considered a more physical proxy of radio scintillation than the couple (S4, σϕ).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 47, Issue 12, 15 June 2011, Pages 2188–2193
نویسندگان
, , , , , ,