On piecewise interpolation techniques for estimating solar radiation missing values in Kedah
- School of Science Quantitative, UUMCAS, Universiti Utara Malaysia, 06010 Sintok, Kedah (Malaysia)
- Faculty of Applied Science, Universiti Teknologi MARA, 02600 Arau, Perlis (Malaysia)
This paper discusses the use of piecewise interpolation method based on cubic Ball and Bézier curves representation to estimate the missing value of solar radiation in Kedah. An hourly solar radiation dataset is collected at Alor Setar Meteorology Station that is taken from Malaysian Meteorology Deparment. The piecewise cubic Ball and Bézier functions that interpolate the data points are defined on each hourly intervals of solar radiation measurement and is obtained by prescribing first order derivatives at the starts and ends of the intervals. We compare the performance of our proposed method with existing methods using Root Mean Squared Error (RMSE) and Coefficient of Detemination (CoD) which is based on missing values simulation datasets. The results show that our method is outperformed the other previous methods.
- OSTI ID:
- 22390749
- Journal Information:
- AIP Conference Proceedings, Vol. 1635, Issue 1; Conference: ICOQSIA 2014: 3. International Conference on Quantitative Sciences and Its Applications, Langkawi, Kedah (Malaysia), 12-14 Aug 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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