Chirp transforms and Chirp series
Chirp transforms and Chirp series
复制标题
Chirp 变换和 Chirp 级数
DOI:
10.1016/j.jmaa.2010.07.037
复制
发表时间:
2011-01
影响因子:
1.3
通讯作者:
Kaehle, Uwe
中科院分区:
文献类型:
--
作者:
Ren, Guangbin;Chen, Qiuhui;Cerejeiras, Paula;Kaehle, Uwe
Motivated by the recent work on the non-harmonic Fourier atoms initiated by T. Qian and the non-harmonic Fourier series which originated from the celebrated work of Paley and Wiener, we introduce an integral version of the non-harmonic Fourier series, called Chirp transform. As an integral transform with kernel eiϕ(t)θ(ω), the Chirp transform is an unitary isometry from L2(R,dϕ) onto L2(R,dθ) and it can be explicitly defined in terms of generalized Hermite polynomials. The corresponding Chirp series take einθ(t)as a basis which in some sense is dual to the theory of non-harmonic Fourier series which take [Formula: see text] as a basis. The Chirp version of the Shannon sampling theorem and the Poisson summation formula are also considered by dealing with sampling points which may non-equally distributed. Since the Chirp transform interchanges weighted derivatives into multiplications, it plays a role in solving certain differential equations with variable coefficients. In addition, we extend T. Qian's theorem on the characterization of a measure to be a linear combination of a number of harmonic measures on the unit disc with positive integer coefficients to that with positive rational coefficients.
登录
查看更多内容
影响因子:
2.9
作者:
T. Qian
通讯作者:
T. Qian
影响因子:
1.3
作者:
Tao Qian
通讯作者:
Tao Qian
DOI:
10.1007/978-94-010-0117-5_5
发表时间:
2003
期刊:
--
影响因子:
--
作者:
A. Rao;Khaled H. Hamed;Huey-Long Chen
通讯作者:
A. Rao;Khaled H. Hamed;Huey-Long Chen
DOI:
10.1090/coll/019
发表时间:
1934-12
期刊:
--
影响因子:
--
作者:
L. S. Basanquet;R. Paley;N. Wiener
通讯作者:
L. S. Basanquet;R. Paley;N. Wiener
DOI:
10.1007/bf01699343
发表时间:
1936-12
期刊:
Monatshefte für Mathematik und Physik
影响因子:
--
作者:
Helly
通讯作者:
Helly