# Frequency estimation of chirp signals based on fractional fourier transform combined with Otsu’s method

> Research article (Optik, 2021) · cited 11× · AI/ML

**Wikidata**: [openalex:W3155203301](https://www.wikidata.org/wiki/openalex:W3155203301)  
**Source**: https://4ort.xyz/entity/frequency-estimation-of-chirp-signals-based-on-fractional-fourier-transform-combined-with-otsus-method