A new method is proposed to simultaneous estimation of both the magnitude of signal and variation of noise, we use mode matching principle to search Doppler frequency by minimized estimate error. 研究了利用相关分析方法计算声纳信号的幅值和噪声方差,并以计算的估计误差最小为准则,运用模式匹配的原理实现了多普勒频率的搜索估计。
RESULTS When the MBPA was applied to the simultaneous determination of the three components of PND, the relative error was between-6.0~+ 9.0%. 结果将MBPN算法用于复方扑热息痛中三组分的同时测定,相对误差为-6.0~+9.0%。
First, the basic theory of static load sharing mechanism has been presented, mainly including manufacturing and assembly error of each gear component's axis and each bearing's axis, gear size ( tooth thickness) errors, simultaneous error of middle two-tooth. 确定了影响齿轮系统均载特性的制造和安装误差,主要包括:各个齿轮构件的中心轴线制造和安装误差、轴承中心轴线的制造和安装误差、齿厚偏差、双联星轮同时啮合线误差;
The NC system is developed by Visual C++ 6.0.It can realize five axes simultaneous moving, compensate the error after measure or do it on line without former measure which greatly increase the machining precision. 该系统采用Visualc++6.0开发,能实现切割时的五轴联动,并具有加工误差的示教再现补偿和实时高度跟踪补偿等功能。尤其是补偿方案的加入,大大提高了加工精度。
Based on the principle of model free adaptive control ( MFAC), simultaneous perturbation algorithm ( SPA) is used to process the measured error signal of active noise control system directly, so it is unnecessary to model the secondary acoustic path. 根据无模型自适应控制的基本原理,采用同时扰动算法对有源噪声控制系统中的测量误差信号进行直接处理,不再需要建立次级声学路径模型。
Relationship between simultaneous users and bit error rate ( BER) of MW OCDMA system was achieved according to the optimum threshold value. 根据最佳判决门限值,得到了多波长光码分多址系统误码率与并发用户数的关系。
The robust estimation principle and influence function were used to propose a new robust approach which can be used with steady state systems for simultaneous gross error detection and data reconciliation. 基于鲁棒估计原理以及影响函数提出了一种新的鲁棒估计方法,用于稳态情况下的数据协调和过失误差侦破,并对计算过程中遇到的变量相关性问题进行了分析。
Simultaneous Resolution of Staple Diuretic Drugs Using Alternatively Minimizing Covariant Matrix Error Algorithm and Three-dimensional Fluorescence Spectrometry 交替最小化协变矩阵误差算法与三维荧光分析法相结合同时分辨利尿类药品
The simultaneous models were recognizable and their error structure matrices were not diagonal. 该模型是可识别且误差结构矩阵不是对角矩阵的联立方程组模型。
Our paper gives elaborate designs for the 90 ° simultaneous pulse circuit and theoretical analysis is also made. Meanwhile, we discuss the influence of simultaneous signals upon the error of remote control. 对产生90°同步脉冲的电路进行了设计和必要的理论分析,同时讨论了同步信号对遥测误差的影响。
Simultaneous gross error detection and data reconciliation based on the robust estimation principle 数据协调与过失误差侦破的鲁棒估计同步方法
Results The iterative approach based on the model of Simultaneous Linear Equations with ARMA Error is better than other three approaches significantly. 结果带有ARMA误差的线性方程组模型方法明显优于其他3种方法。
The results reveal that the OCDMA systems with FBGs based encoder/ decoder are not only easy to plan, but also have large number of simultaneous users, high power efficiency and low bit error rate ( B ER). 结果表明,基于FBG编解码器的OCDMA系统具有设计简单、用户容量大、功率效率高和误码率(BER)低等方面的优点。
Simultaneous detection of cyclic error and EDM constant of distancemeter by the flat-top building method 平台法同时检验测距仪的周期误差及加常数
The simultaneous measurement of displacement and temperature is realized through the different response of the two parts of the grating to the displacement of the freedom end of the beam and environment temperature. The measurement error is less than 4%. 通过两部分光栅对梁自由端位移和环境温度的不同响应,实现温度和位移的同时测量,测量误差不大于4%。
Attention is the design by solving simultaneous equations based on the discrete least squared error criterion. 重点讨论基于离散均方误差最小化准则的联立方程求解法。