【摘要】 本文提出了设计任意幅度频响的二维线性相位ＦＩＲ数字滤波器的解析最小二乘方法，通过最小化频域平方误差函数得到了滤波器系数的闭式解。运用导出的闭式表达式，可根据给定的任意幅度频响指标直接计算滤波器的系数，从而简化了滤波器设计程序，并大大降低了运算量。更多还原

【Abstract】 In this paper, we present an analytical least-square technique for the design of 2-D linear-phase FIR digital filters with arbitrarily shaped magnitude responses.By minimizing the squared-error function in the frequency-domain,we obtain a closed-form solution for the filter coefficients.Using the derived closed-form expressions,the coefficients of the designed filter can be evaluated directly from the specified arbitrary magnitude frequency responses,resulting in a simplified procedure and a greatly reduced computational burden for the filter design.更多还原