Some common used demodulation methods are discussed , with emphasis on the tunable fiber fabry - perot ( f - p ) filter demodulation method . as last , a completed fbg temperature sensing is constructed 探讨了基于调谐光纤f - p滤波法的光纤光栅解调器的研制,并组建了比较完整的光纤光栅温度传感检测系统。
The maximum likelihood estimation algorithm for seawinds scatterometer wind vector retrieval generates 2 4 wind vector ambiguities , so a circle median filter is needed to perform the ambiguity removal 利用最大似然法mle对seawinds散射计数据反演得出的风矢量,一般存在24个模糊解,故需采用圆中数滤波法进行模糊去除。
With the ms filtering , we firstly studied the correlation output after the holograms were thermal - fixed . we found that after thermal fixing , the readout holograms and the image of background correlation became dark 本论文还在离线的热固定技术和ms滤波法的基础上,在目前还没有报道的情况下,首先研究了热固定的相关识别。
3 . a variety of speech enchancement algorithms are discussed including wiena filter , spectral subtraction , mmse algorithm and the masking model combined with the spectral subtraction algorithm 3 .系统地研究了多种语音增强算法,包括基于短时谱分析的维纳滤波法、谱减法和mmse算法,并研究了基于人耳听觉掩蔽效应的语音增强算法。
In comparison , some actual data are processed by both the conventional method and the new one , indicating that the new method is more effective in improving the consistency of the two kinds of source record than the conventional one 处理结果表明,多点综合串联匹配滤波法比常规的匹配滤波法能更有效地提高2种震源记录的一致性。
The principle of unbalance vibration of rotating machinery is introduced , the unbalance control technique based on notch filter is researched by using simulation , the model of 3d - rotor is established 磁悬浮转子系统中常用的不平衡补偿控制方法简介,并对其中的凹陷滤波法进行了仿真,同时建立了磁悬浮刚性转子的三维空间数学模型。
The paper verifies that the self - adapting construction controlling is a good method among the existing ones of the cable - stayed , and that kalman filter method can forecast the cable - stayed construction proceed efficiently 本文研究证明自适应施工控制是目前较好的斜拉桥施工控制方法,卡尔曼滤波法能够对斜拉桥的施工过程进行有效的预测控制。
Besides , several contrast enhancing approaches were compared in the thesis , including histogram equalization , homo - filters , and wavelet transform . an algorithm based on the polygon approximation is developed 本论文对比了现有的一些图像对比度提高的方法,包括直方图均衡化、同态滤波器和小波同态滤波法在水下图像对比度增强中应用的效果。
The linear darkness transform method is used to increase the contrastiveness of pictures ; the improved mid - value filtering algorithm and local average method are adopted to protect the edge as much as possible on the basis of noise elimination 采用线性灰度变换等方法对图像进行增强,使图像的对比度扩展。采用改进型中值滤波法和多图像平均法,在去除了噪声的基础上尽可能的保护了边缘。
Depending on the specific application , the enhancement system may be directed at different objectives . what is contained in the thesis is as following : ( 1 ) . a variety of methods based on short - time spectrum estimation for speech enhancement are discussed 系统地研究了基于语音短时谱估计的各种增强方法,包括幅度谱相减法、功率谱相减法、维纳滤波法、最小均方误差法、两态软判决等。