Pencere Fonksiyonu Aileleri ve Uygulama Alanları

Pencere fonksiyonları (veya kısaca pencere), sonlu impuls cevaplı (FIR, Finite Impulse Response) sayısal filtre tasarımında istenmeyen salınımları ortadan kaldırmak için kullanılan yapılardır. Pencere fonksiyonu analob genişliği, dalgalanma oranı ve yan lob azalma oranı gibi fonksiyonun performansını etkileyen parametrelere sahiptir. Bir pencere fonksiyonu tasarımında temel amaç, istenilen özellikleri sağlayacak genlik spektrumuna düşük derece ve en uygun spektral parametre değerleriyle ulaşmaktır. Bu çalışmanın amacı, pek çok uygulama alanında tercih edilen pencere fonksiyonu ailelerini belirlemek ve bu fonksiyonlar için yeni yaklaşımları incelemektir.

Anahtar Kelimeler:

Pencere fonksiyonu ailesi, Kaiser penceresi, Ultraspherical pencere, FIR filtre

Window Function Families and Their Application Areas

Window functions (or shortly windows) are structures being used to eliminate undesired oscillations at FIR (Finite Impulse Response) digital filter design. Window function has parameters, which affect window performance, such as mainlobe width, ripple ratio and sidelobe roll-off ratio. The main aim at window function design is to reach amplitude spectrum providing desired properties with low degree and optimum spectral parameter values. The goal of this study is to determine window function families preferred at many application areas and to examine the new approaches for these functions.

Keywords:

Window function families, Kaiser window, Ultraspherical window, FIR filter,

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