Zolotarev 다항식을 이용한 2-D 노치 필터의 설계
- Title
- Zolotarev 다항식을 이용한 2-D 노치 필터의 설계
- Other Titles
- Design of a 2-D FIR notch filter using the Zolotarev polynomial
- Author
- 조광현
- Alternative Author(s)
- Cho, Kwang Hyun
- Advisor(s)
- 남상원
- Issue Date
- 2009-02
- Publisher
- 한양대학교
- Degree
- Master
- Abstract
- 본 논문에서는 효율적인 2-D FIR 노치필터 디자인 방법을 제안한다. 필터의 임펄스응답을 효율적으로 계산할 수 있는 Chebyshev 다항식의 확장하고 주파수대역에서 bandstop 필터 형태를 보이는 Zolotarev 다항식을 Chebyshev 다항식으로 확장 적용하여 1-D DC FIR 노치필터를 설계하는 방법, frequency shifting, 그리고 임펄스응답의 2-D convolution을 이용하여 효율적인 2-D FIR 노치 필터 설계 방법들을 제안한다. 시뮬레이션을 통하여, 설계된 2-D 노치필터의 특성을 검증한다.; In this thesis, a new approach for the efficient design of 2-D FIR notch filters using 1-D DC-notch FIR filter, frequency shifting, and 2-D convolution. The proposed approach utilizes a generating function to design the notch filter using the graphical representation of Zolotarev polynomials.
In particular, a 2-D FIR notch filter is designed by using a closed-form formula for filter coefficients along with frequency shifting and 2-D convolution.
Simulation results show that the proposed approach yields improved quality of images with sinusoidal interference and provides a practical and efficient design procedure for the realization of a sharp FIR notch filter of low order, satisfying the given filter specification.
- URI
- https://repository.hanyang.ac.kr/handle/20.500.11754/144837http://hanyang.dcollection.net/common/orgView/200000410782
- Appears in Collections:
- GRADUATE SCHOOL[S](대학원) > ELECTRONICS AND COMPUTER ENGINEERING(전자컴퓨터통신공학과) > Theses (Master)
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