Assessment of the Ionospheric and Tropospheric Effects in Location Errors of Data Collection Platforms in Equatorial Region during High and Low Solar Activity Periods

<table>Sunspot numbers of cycle 23 and beginning of cycle 24. The daily (yellow), monthly (blue), and monthly smoothed (red) sunspot numbers since 2000, together with predictions for 12 months ahead: SM (red dots): classical prediction method, based on an interpolation of Waldmeier’s standard curves; CM (red dashes): combined method proposed by K. Denkmayr. Source: <a href="http://sidc.oma.be/html/wolfjmms.html">http://sidc.oma.be/html/wolfjmms.html</a>—Access in October 2011.</table>

Mathematical Problems in Engineering

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Figure 1

Figure 1: Assessment of the Ionospheric and Tropospheric Effects in Location Errors of Data Collection Platforms in Equatorial Region during High and Low Solar Activity Periods 

Figure 1 | Assessment of the Ionospheric and Tropospheric Effects in Location Errors of Data Collection Platforms in Equatorial Region during High and Low Solar Activity Periods 