An Integral Transform and Its Applications in Parameter Estimation of LFM Signals

作者：Zhang, Xihui^*; Cai, Jingye; Liu, Lianfu; Yang, Yuangwang

来源：Circuits, Systems, and Signal Processing, 2012, 31(3): 1017-1031.

DOI：10.1007/s00034-011-9356-z

• Fractional Fourier transform
• Linear canonical transform
• Linear frequency-modulated
• Simplified linear canonical transform

This paper proposes a new transform called simplified linear canonical transform (SLCT) that provides a new method for parameter estimation of linear frequency-modulated (LFM) chirp signals embedded in additive white Gaussian noise. The proposed transform is a linear transform and has a more succinct form as compared with the fractional Fourier transform (FRFT). The discrete SLCT with fast Fourier transform (FFT) algorithm provides a computationally fast choice for LFM signal detection or parameter estimation. Using SLCT and a clean technique, all the components of Multi-LFM signals can be estimated seriatim. Simulations illustrate that the proposed algorithm is more effective than existing ones.

• 出版日期2012-6
• 单位电子科技大学