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
来源：
PROCEEDINGS OF THE IEEE-SP INTERNATIONAL SYMPOSIUM ON TIME-FREQUENCY AND TIME-SCALE ANALYSIS | 1998年
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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