In addition , based on fft and remainder algorithm , the modulation rate and initial frequency of sub - sampling uwb lfm signal are estimated unambiguously in negative snr 该方法通过fft和余数定理解频率模糊,解决了负信噪比条件下超宽带线性调频信号调制斜率和初始频率的估计问题。
One new method that the uwb signal can be received ambiguously has been presented in this dissertation . furthermore , the sampling lfm signal becomes two sine signals with different frequencies based on two different delay processes . based on fft and remainder algorithm , the modulation rate and initial frequency of sub - sampling lfm signal are estimated precisely and unambiguously in negative snr 该方法通过在数字域对信号进行两路不同的延时和余数定理实现欠采样条件下超宽带线性调频信号的调制斜率和初始频率的无模糊估计,在不降低参数估计精度的前提下,解决了欠采样方法引起硬件复杂度增加的问题。
余数: remainder; complement of a n ...定理: theorem中国余数定理: chinese remainder theorem【数学】素数定理。: prime number theorem残数定理: cauchy residue theorem; theorem of residues乘数定理: multiplier theorem大数定理: laws of large numbers反函数定理: inverse function theorem柯涡数定理: cauchy residue theorem留数定理: residue theorem三级数定理: three series theorem素数定理: prime number theorem维数定理: dimension theorem隐函数定理: implicit function theorem; theorem of implicit functions指数定理: index theorem质数定理: prime number theorem费马素数定理: fermat's prime number theorem交错级数定理: alternating series柯西残数定理: cauchy residue theorem柯西留数定理: cauchy residue theorem幂群计数定理: power group enumeration theorem配对函数定理: pairing function theorem万有系数定理: universal coefficient theorem中国馀数定理: chinese remainder theorem阿蒂亚 辛格指数定理: atiyah singer index theorem