Browsing by Author "Khasana, Kartika Nur"

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    PREDIKSI PERIODE CURAH HUJAN DI KOTA PEKANBARU MENGGUNAKAN METODE FAST FOURIER TRANSFORM
    (Elfitra, 2022-01) Khasana, Kartika Nur; Defrianto, Defrianto
    Indonesia is a country with a tropical climate so the region has a fairly high rainfall. In this study, predictions of the rainfall period for Pekanbaru City were made from 2016-2020. This study uses the Fast Fourier Transform method with the data used is monthly rainfall data with a time span of 2016-2020. The result of the FFT program is a graph that relates the month, frequency, and period to the rainfall and the rainfall function to the month. The graphs obtained are 4 frequencies, namely 0.016949 cycles/month, 0.050847 cycles/month, 0.084746 cycles/month, and 0.169492 cycles/month, which correspond to the 4 periods obtained, namely 5.90, 11.80, 19.67, 59.00. The results of this study indicate that the highest rainfall occurred in November 2016 in the 2016-2020 period