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white noise 【聲】白噪聲。

white oak

In addition , the influence mechanism of noise on the enhancement ratio is discussed . from the simulation examples , we find the law that random gaussian white noise influencing synthesized images 另外還分析了噪聲對分辨率提高倍數的影響,通過仿真實驗,找到了合成圖像受隨機高斯白噪聲影響的規律。

The statistical property of gaussian white noise in the monoscale ridgelet domain was analyzed , and a new image threshold denoising algorithm based on monoscale ridgelet transform was proposed 摘要分析了高斯白噪聲在單尺度脊波域中的統計性質,提出了一種新的基于單尺度脊波變換的閾值濾波算法。

Then , in white noise condition , a two - dimension scattering center estimation method which is called matrix pencil method of two - dimension harmonious restructure ( mp2d ) is proposed 在白噪聲背景下,針對目標二維散射模型自相關函數“邊緣解耦”特性,提出了估計目標二維散射中心的mp2d算法。

The statistical property of gaussian white noise in the monoscale ridgelet domain was analyzed , and a new image threshold denoising algorithm based on monoscale ridgelet transform was proposed 分析了高斯白噪聲在單尺度脊波域中的統計性質,提出了一種新的基于單尺度脊波變換的閾值濾波算法。

The median filter may eliminate impulse noise but not white noise ; the technology of wavelet pucket can primarily eliminate the white noise but not impulse noise 中值濾波對脈沖噪聲有較好的濾波效果,對于白噪聲降噪效果較差;小波包技術可以很好的消除白噪聲,但對脈沖噪聲濾波效果不理想。

Speech enhancement method based on masking properties of the human auditory system is used to reduce the white noise in the front - end 摘要為了提高噪聲環境下說話人識別系統的識別性能,將基于聽覺掩蔽效應的語音增強技術作為預處理器,對語音信號首先進行降噪處理,提高輸入信號的信噪比。

We give out the coordinative estimations of signal & noise . this method is applicable for all additive white noises . and it can be used to identify signal simultaneously 給出了信號與噪聲的聯合估計,該方法適用任意加性白噪聲,且可同時對信號進行識別,有一定的普遍意義。

When sampling period is very low or close to ideal case for signal detection in additive gaussian white noise ( agwn ) , the detection circuit with matched filter is optimal 摘要在加性高斯白噪聲信號檢測中,在采樣周期極小或接近理想的情況下,連有匹配濾波器的檢測電路是最佳的。

Therefore , the target signals , which are submerged in chaos clutter or chaos clutter mixed with a certain intensity of white noise , can be detected on the basis of the predicting error 這樣可根據預測誤差對淹沒在混沌雜波及混沌雜波加一定強度的白噪聲中的弱目標信號進行檢測。

In the article , a self - learning stochastic method based on the statistical pattern recognition is presented for attitude control under the disturbance of blind mixed gaussian white noises 摘要本文提出一種基于統計模式識別,針對盲混合高斯白噪聲干擾下衛星姿態控制的方法。

Theoretical analysis and simulation results show that it is mainly flicker noise , not phase or frequency white noise , that affects bistatic sar imaging performance 理論分析和仿真試驗證實了影響雙基地sar成像的相位噪聲主要是閃爍頻率噪聲,而不是白噪聲調相或白噪聲調頻。

Three subjects are left alone in dark , sound - proofed rooms , while the other three are given goggles and foam cuffs , while white noise is piped into their ears 三項課題被安排獨自呆在黑暗的隔音房中,而其他三個將戴上護目鏡和泡沫箍袖帶,被安排在刺耳的白噪音*中。

Then this dissertation compares the theoretical analysis of the ber on white noise and its computer simulation results , testifies validity of the simulative model 在高斯白噪聲干擾下,我們進行誤碼率仿真實驗,將仿真結果與理論結果相比較,證明了仿真模型的正確性。

In chapter 3 , under the wideband radar system , some parameter estimation methods of scattering center are studied in the white noise and clutter background 第三章以寬帶階梯變頻雷達為研究背景,在白噪聲和雜波條件下,研究了提取目標強散射中心的參數估計方法。

The sequences based on chaotic system get the traits of white noise can be the pn code of cdma system . many papers proved its feasibility 基于混沌的偽隨機序列具有類似白噪聲的統計特性,完全可以取代傳統序列作為cdma通信系統的pn碼,已有大量文章證實其可行性。

In the system of the online measuring of pellets diameters , the disturbed noises during the process of collecting pellets images are mainly impulse noise and white noise 摘要在球團礦粒度在線檢測系統中,球團圖像采集過程的干擾噪聲主要是脈沖噪聲和白噪聲。

If one wants to retrive the encryping datable or she must know the phase keys and wavelength keys simultaniously , otherwise , the reconstructed data will be white noise like 要想得到存儲信息必須同時知道相位匙和波長匙,否則得到的數據將是一白噪聲系列。

This approach only requires the noise inputs to be energy - bounded instead of gauss white noises . the main results can be expressed by lmi after some matrix manipulations 該方法不需要限定系統的噪聲輸入信號為高斯白噪聲,而只要求噪聲信號為能量有界。

Our experiments show that this method is also robust to gaussian white noise . resampling and smoothing etc . . at last , some discussions and conclusions are given 實驗結果顯示,我們的算法在高斯白噪聲、重采樣、運動光滑等攻擊下有很好的魯棒性。