Statistical distribution of GPS amplitude scintillations

Details Statistical distribution of GPS amplitude scintillations Statistical distribution of GPS amplitude scintillations

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012jastp..74..199a&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 74, p. 199-211.

Physics

Scientific paper

This study presents complementary cumulative distribution function (CCDF) as a statistical distribution apparatus for fitting GPS scintillations data. Three years of data at three levels of solar activity, 2002 (high), 2004 (moderate) and 2008 (low) from an equatorial anomaly crest station; Bogota (4.4°N, 74.1°W, dip 16.0°N) [Colombia] in the West Coast of South America were used for the investigation. These data were grouped into daily, monthly and seasonal sets at three levels of solar activity, and tests were introduced on them to reject data from non-ionospheric sources of scintillation, such as multipath. Before fitting each set of data on a CCDF, the data were first visualized with the aid of scatter plots whereby the distributions exhibit non-Gaussian behavior. As a case study, at S4=0.3 threshold, during the year 2002 and 2004, the months of May-July showed probability of occurrence of the order of 0.01 (1% of the observed samples of a given set) for each month, while in 2008, this trend persisted to August (May-August, probability of occurrence of 0.01 or less (1%)). The tails of January and March's distributions were observed to be the heaviest at S4=0.3, although, a relatively heavy tail at this threshold was also observed during the month of November in the year 2004, and during March Equinox and December Solstice in terms of seasons. The heaviness of the tail at this threshold relaxes as solar activity decreases. The calculated probability of occurrences and those derived from the statistical distribution scheme show good consistency. The results presented in this study may be of assistance for future modeling and simulation studies.

Affiliated with

Also associated with

No associations

Rating

Statistical distribution of GPS amplitude scintillations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Statistical distribution of GPS amplitude scintillations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Statistical distribution of GPS amplitude scintillations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-911372