一种基于重构滤波的时限带通椭圆球面波函数信号产生方法技术

本发明专利技术提供一种基于重构滤波的时限带通椭圆球面波函数信号产生方法，可以以较少的离散采样值通过重构滤波产生时限带通椭圆球面波函数信号。与已有方法相比，该方法可以降低对硬件存储资源的要求，不需要带通滤波且易于工程实现。采用该方法产生时限带通椭圆球面波函数信号的步骤为：由带通采样定理确定所需的采样点数；通过数值求解算法求解所需的采样值；经重构滤波将信号采样率提高到信号最高频率的两倍以上；由数模转换和低通滤波产生连续的模拟信号波形。本发明专利技术提供的时限带通椭圆球面波函数信号产生方法适用于大相对带宽或小相对带宽的时限带通椭圆球面波函数信号产生，由其适用于小相对带宽时限带通椭圆球面波函数信号的产生。

A signal generation method for time bounded bandpass elliptical surface wave function based on reconstruction filtering

The present invention provides a time limited bandpass elliptic wave function signal generation method based on reconstruction filtering, which can generate a time band bandpass elliptic surface wave function signal by means of reconstruction filtering with fewer discrete sampling values. Compared with the existing methods, the proposed method can reduce the requirement of hardware storage resources without bandpass filtering and is easy to implement in engineering. The method produces time bandpass prolate spherical function signal comprises the following steps: by the bandpass sampling theorem to determine the required number of sampling points; sampling value required by the numerical solution algorithm; the reconstruction filter will signal sampling rate increased to more than two times the highest frequency of the signal; analog signal generated by continuous wave analog-to-digital conversion and low-pass filter. The present invention provides time bandpass prolate spherical function signal generating method for large relative bandwidth or small relative bandwidth limit bandpass pswf signals, generated by the relative bandwidth for small time bandpass prolate spherical function signal.

【技术实现步骤摘要】

【技术保护点】
一种基于重构滤波的时限带通椭圆球面波函数产生方法，其特征是：通过采样点数确定、采样值求解、信号波形重构以及数模转换和低通滤波四个步骤产生时限带通椭圆球面波函数信号。

【技术特征摘要】

【专利技术属性】
技术研发人员：王红星，刘锡国，赵志勇，毛忠阳，钟佩琳，
申请(专利权)人：王红星，
类型：发明
国别省市：37