Instantaneous frequency estimation of polynomial phase signals

被引:7
|
作者
Cakrak, F [1 ]
Loughlin, PJ [1 ]
机构
[1] Univ Pittsburgh, Dept Elect Engn, Pittsburgh, PA 15261 USA
关键词
D O I
10.1109/TFSA.1998.721483
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We develop a new multi-window time-frequency method for estimating the instantaneous frequency (IF) of constant amplitude polynomial FM signals in the presence of noise. The method is computationally simple, asymptotically unbiased for noise-free signals, and provides a signal to noise ratio(SNR) threshold improvement of about 3 dB over other estimators, including the cross-polynomial Wigner time-frequency method (X-PWVD), for quadratic and cubic FM signals.
引用
收藏
页码:549 / 552
页数:4
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