Antarctic GPS Ionospheric Scintillation Measurements During High Solar Activity
Updated 23y ago
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Description
Data from 1999 onward, collected at Casey, Davis, and Macquarie Island stations, captures GPS signal scintillation and total electron content in the southern high-latitude ionosphere. The dataset includes 22 columns of raw and processed measurements, such as satellite PRN, elevation, and various scintillation indices, compiled by the Australian Antarctic Data Centre for ASAC Project 1121. It focuses on the period around the solar maximum expected in 2000.
Use Cases
Modeling the relationship between satellite elevation (elev) and corrected scintillation index (s4cor) to predict signal quality.
Analyzing temporal patterns of phase sigma indices (s1, s3, s10, s30, s60) against GPS week and time to study ionospheric irregularity dynamics.
Investigating correlations between amplitude spectrum metrics (k0, k1, k2, k3) and the standard S4 index (s4tot) for scintillation characterization.
Using satellite azimuth (azi) and PRN number to map spatial variability of scintillation activity over Antarctic observation sites.
Examining code/carrier divergence (cdiv, sdiv) alongside signal strength (cno) to assess impacts on precise positioning accuracy.
Strengths
Contains 22 defined measurement columns per observation for detailed analysis.
Data spans multiple Antarctic stations (Casey, Davis, Macquarie Island) for geographic coverage.
Includes both raw measurements and processed scintillation indices derived from them.
Limitations
The exact number of rows, file size, and specific temporal bounds beyond the 1999 start are unknown.
Data collection ended in 2002, making it temporally stale for modeling current solar cycle conditions.
Column descriptions contain uncertainties (e.g., 'warm', 'cno') which may complicate interpretation.
Provenance
Source
Australian Antarctic Data Centre (AU_AADC) for ASAC Project 1121.
Collection Method
Collected from GPS receivers at Casey, Davis (Australian Antarctic Territory), and Macquarie Island stations.
Time Range
From at least GPS week starting 22 August 1999, focusing on the period around the 2000 solar maximum.
Freshness
Last updated in 2002; static historical dataset.
Geography
Southern high latitudes, specifically Casey and Davis stations in Antarctica and Macquarie Island in the Southern Ocean.
License terms are unknown and must be verified before use. The provided column list is from a conversion program fragment; the actual data files' format and structure are unspecified.