均方誤差效率 的英文怎麼說
中文拼音 [jūnfāngwùchāxiàolǜ]
均方誤差效率
英文
mean square error efficiency- 均 : Ⅰ形容詞(均勻) equal; even Ⅱ副詞(都; 全) without exception; all
- 方 : Ⅰ名詞1 (方形; 方體) square 2 [數學] (乘方) involution; power 3 (方向) direction 4 (方面) ...
- 誤 : Ⅰ名詞(錯誤) mistake; error Ⅱ動詞1 (弄錯) mistake; misunderstand 2 (耽誤) miss 3 (使受損害...
- 差 : 差Ⅰ名詞1 (不相同; 不相合) difference; dissimilarity 2 (差錯) mistake 3 [數學] (差數) differ...
- 效 : Ⅰ名詞(效果; 功用) effect; efficiency; result Ⅱ動詞1 (仿效) imitate; follow the example of 2 ...
- 率 : 率名詞(比值) rate; ratio; proportion
- 誤差 : error
- 效率 : productiveness; efficiency; productivity; workpiece ratio
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During the instantaneous frequency estimation of lfm, there exists some error in the edge, so in the dissertation, a fitting method is proposed to modify it. from the computer simulation, the following result is obtained : for cw, the method based on cwt is most effective, and with the snr rising, the error curve of it is more and more closer to crb. for lfm, the method based on wvd gives the best result, and the effects of cwt and stft are similar for multi - component signal, compared to stft and wvd, cwt is a better choice
通過模擬發現,在單頻回波的瞬時頻率估計中,基於cwt的方法最為有效,隨著信噪比的提高,其均方誤差曲線越來越接近克拉美?羅界;在線性調頻回波的瞬時頻率估計中, wvd法得到的效果最好,而cwt與stft法的估計效果比較接近;在多分量信號的瞬時頻率估計中,相對于stft和wvd法, cwt法是一個更好的選擇。Contrast experiment shows that multi - time factors can improve the quality of prediction equations and make effective rate reach 90. 0 percents and reduce sum of residual squares 23. 8 percents meanly
對比試驗表明,多時刻因子可改善大多數預報方程的質量,有效率達90 . 0 % ;多時刻因子使預報誤差明顯減小,預報方程的殘差平方和平均減少23 . 8 % 。
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