1) response variance
响应方差
1.
The analytical formulate of random response variance and optimal damping ratio of the system are derived with white noise input.
以1/4车体的垂向振动作为研究对象,建立汽车双层隔振系统的垂向振动模型,导出在白噪声输入情况下系统随机响应方差及最优阻尼比的解析式。
2.
At different parameter,time response and response variance of the displacement and acceleration are calculated about these vibration isolation models.
计算在不同的输入参数下,车辆的时域响应和位移与加速度响应方差,讨论了弹簧刚度、阻尼、车速等对隔振性能的影响。
2) minimum variance distortionless response(MVDR)
最小方差无失真响应
1.
The effects of the frequency leakage of the array data on the signal detection performance of the minimum variance distortionless response(MVDR) were analyzed systematically from the view of the signal-to-interference-noise(S/INR) changes of the beam output.
从波束输出信/干噪比(S/INR)变化角度,定量地分析了阵列信号频谱旁瓣泄漏对常规宽带最小方差无失真响应(MVDR)信号检测能力的影响,并指出在近场强干扰影响下,选用具有更低旁瓣的窗函数进行数据截断更有利于提高宽带MVDR的信号检测能力。
2.
Application of the non-linear post-processing method in improving the weak signal detection performance of the broadband Minimum Variance Distortionless Response(MVDR) is researched fully.
该文将非线性后置处理思想引入至最小方差无失真响应(MVDR)的空间能量谱计算中,并给出其实现方法,即最终空间能量谱通过将各窄带阵列输出结果取倒数并求和得到,它不需要阵列噪声和目标信号的任何先验信息,只要阵列噪声的频谱在频段间的幅度起伏大于目标信号的频谱幅度起伏,该方法就能取得较常规处理方法更好的信号检测性能。
3) minimum variance distortionless response
最小方差无失真响应
1.
An algorithm of broadband minimum variance distortionless response(MVDR) based on the frequency energy normalization was proposed.
给出了一种基于频段能量归一化处理的宽带最小方差无失真响应算法。
4) amplification coefficient of response variance
响应方差放大系数
5) spotting well.Key words:minimum variance distortionless response spectrum
最小方差无失真响应谱
6) minimum variance distortionless response
最小方差无畸变响应
1.
The method firstly defines fractional lower-order array response and then develops a fractional lower order minimum variance distortionless response(FrMVDR) beamformer,based on the conventional minimum variance distortionless response(MVDR) beamformer.
方法假定噪声服从对称α稳定(SαS:Symm et-r ic-αstab le)分布,首先定义分数低阶阵列响应,然后根据最小方差无畸变响应波束形成器(M VDR)提出分数低阶最小方差无畸变响应波束形成器(F rM VDR)。
2.
The detection method of long-distance object was proposed by minimum variance distortionless response(MVDR) beam forming,based on sub-band decomposition,to detect spatial energy distribution accurately.
本文采用基于子带分解的宽带最小方差无畸变响应(MVDR)波束形成进行空间能量检测,通过在频域各子带进行自相关矩阵平滑有效改善检测稳定性。
补充资料：并合方差
分子式：
CAS号：
性质：是按加权方式计算出的各组的共同方差，当试验分m组进行，总的测定方差s2由m组的方差si2(i=1,2, …,m)共同决定。总方差，式中ni、fi和xi；分别为第i组的测定次数、自由度和平均值，xij是第i组的第j次测定值。
CAS号：
性质：是按加权方式计算出的各组的共同方差，当试验分m组进行，总的测定方差s2由m组的方差si2(i=1,2, …,m)共同决定。总方差，式中ni、fi和xi；分别为第i组的测定次数、自由度和平均值，xij是第i组的第j次测定值。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条