低信噪比時(shí)混沌信號(hào)降噪的微擾方法
disturbing method for noise reduction of chaotic signal with low signal-to-noise-ratio
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摘要: 該文提出一種新的混沌信號(hào)降噪方法微擾法,并且給出了微擾法的一個(gè)具體實(shí)例算法梯度微擾法。該文還對(duì)用梯度微擾法進(jìn)行混沌信號(hào)降噪的效果進(jìn)行了實(shí)驗(yàn)研究。實(shí)驗(yàn)結(jié)果表明,梯度微擾法能夠在低信噪比時(shí)得到很好的降噪效果。文中還對(duì)梯度微擾法的參數(shù)選擇問(wèn)題進(jìn)行了實(shí)驗(yàn)研究。
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關(guān)鍵詞:
- 混沌; 混沌信號(hào); 降噪
Abstract: A new disturbing method for noise reduction of chaotic signal is presented, and a realizing example of this method-gradient disturbing method, is proposed. The noise-reduction capability of the gradient disturbing method for chaotic signal is experimentally studied, it is shown that the gradient disturbing method can obtain fairly good noise-reduction result for chaotic signal even if the signal-to-noise-ratio is low. How to choose the parameters used in the gradient disturbing method is also experimentally studied in this paper. -
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