【摘要】 在分析双线幅度法(Rife)、修正双线幅度法(MRife)、傅里叶系数插值迭代3种算法的基础上,结合FPGA的并行处理优势,将迭代变为并行运算,由此得出了一种快速频率估计算法。并将新算法进行FPGA设计,给出了算法流程图。仿真结果表明,当RSN>-14dB时,新算法的频率估计均方误差接近卡拉美-罗限(CRB)。更多还原

【Abstract】 Based on Rife algorithm,MRife algorithm,and FFT coefficient interpolation iterative frequency estimation algorithm,a new algorithm was proposed,which replaced the iteration with the parallel computing. Then,the new algorithm was implemented in FPGA. The simulation results indicated that the Root Mean Square Error(RMSE) of new algorithm could approach Cramer-Rao Bound(CRB) when the input Signal Noise Ratio(SNR) exceeded –14 dB.更多还原