...；Rom-less；多项式近似 [gap=734]Keywords：direct digital frequency synthesizer;FPGA;Rom-less;polynomial approximation ...
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多项式近似法 [数] polynomial approximation
分段多项式近似 [数] piecewise polynomial approximation
多项式近似方案 polynomial approximation scheme
全多项式近似方案 fully polynomial approximation scheme
多项式近似[逼近 polynomial approximation
泰勒多项式近似 TPA-MMSE
多项式近似滤波器 polynomial approximate filter
多项式时间近似方案 PTAS ; polynomial time approximation scheme
多项式时间近似的计划 FPTAS
利用正弦多项式近似直接产生数字正弦波，而无需限制相幅转化速度的ROM。
This design dispenses with ROM which mainly limits the converting speed of DDS, but USES SIN function polynomial approximation directly generating digital SIN wave.
阻抗函数用分式多项式近似，并表达为串接的并联电阻、电感的福斯特电路形式。
The impedance function is approximated by fractional polynomial, which is represented as a series connection of parallel RL elements (Foster form).
数值结果表明：在隐式一阶多项式近似下，对合适的反应性输入能够取得足够精确的结果。
The numerical results show that for reasonable reactivity inputs, a sufficient accuracy can be achieved in first order polynomial approach presented here.
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