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在很多信号处理应用中,经常需要将原始信号变换为更便于处理或更期望的形式,这些变换大多为线性变换,例如褶积或匹配滤波等。横向滤波器具有高度并行的运算能力,可以同时完成大量的加权求和运算,因而更适合于完成各种线性变换。特别是由电荷耦合器件和面声器件构成的采样模拟式横向滤波器,更具有较高的变换速度和较低的功耗。本文综述了可采用横向滤波器来实现的各种线性变换,其中包括线性调频z变换、滑动线性调频z变换、素数变换、离散余弦变换、离散余弦素数变换及二维线性调频z变换等,并展望了这方面的发展方向。
In many signal processing applications, it is often necessary to transform the original signal into a form that is easier to handle or more desirable, most of which are linear transforms such as convolution or matched filtering and the like. Transverse filter with a high degree of parallel computing power, you can complete a large number of weighted summation, and thus more suitable for the completion of a variety of linear transformation. In particular, the sampling analog transversal filter composed of charge-coupled device and surface acoustic wave device has higher conversion speed and lower power consumption. This paper summarizes the various linear transforms that can be implemented using transversal filters, including chirp z transforms, sliding chirp z transforms, prime transforms, discrete cosine transforms, discrete cosine prime transforms, and two-dimensional chirp z transforms, etc. Looking forward to this direction of development.