摘要
对于周期有限取样序列，用有限取样内插函数作重构即可无失真地恢复原函数。从以下两方面论证了上述有限取样内插函数：（１）无限取样函数ｓｉｎ（πｔ）／（πｔ）在有限区间的混叠；（２）三角多项式内插基本函数。
n practice, the samples are often periodic and finite. To interpolate this type of signal,the finite interpolation function, which has finite interval of t, is used to reconstruct the original signal exactly.Two kinds of finite interpolation function are derived from two ways:(1)the convolution of sin(πt)/(πt)with a periodic impulse stain, and (2) the fundamental interpoation function of trigonometric polynomial.
出处
《南京邮电学院学报》
北大核心
1996年第1期9-12,共4页
Journal of Nanjing University of Posts and Telecommunications(Natural Science)
