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However, measurement noises from different sensors are generally correlated with covariance matrix which is difficult to be determined accurately.

但各传感器测量噪声会出现相关的情况，而且很难得到相关测量噪声的方差矩阵的精确值，测量系统往往是不确定的。

A tactical-grade IMU, HG1700 and MEMS IMU, Crista were mixed to build up several virtual IMUs with various-accuracy inertial sensors on three axes of the vehicle body frame.

利用战术级IMU HG1700和MEMS IMU Crista混合出几种虚拟的IMU，在载体坐标系的三个轴方向使用不同精度的惯性传感器。

According to this theory, hardware was made; the experiments showed different flow case brought different cross correlation function, when the distance of two sensors within 0.5～1. 5 diameter of the pipe, a sharp peak can be detected in the curve of cross correlation function, the frozen model is satisfied.

开展了互相关函数算法的研究，重点研究了极化相关算法，对该算法进行仿真研究；仿真结果与实验处理结果对比，得出只有将流动噪声信号量化为+1、-1时，极化相关算法可以得到准确的峰值位置。

In addition to unique exterior modifications, there are also bi-xenon headlights, rear parking sensors and cruise control.

除了独特的外观修改，也有双氙大灯，后停车传感器以及巡航控制。

In the titration experiment of NMR and IR spectroscopy, we can understand how sensors binding with metal ions: the two carbonyl group and crown ether group cooperated in binding with metal ions. Furthermore, by altering the "oxygen" atoms of crown ether to "sulfur", we can change the binding affinity to the soft metal: cupper. It shows 60-fold enhancement of fluorescence.

在化合物2中，我们引进了硫原子在冠状醚中，则应对电子密度较低之金属有较好的结合能力，实验结果显示了此分子对铜离子有相当好的选择性和结合能力，萤光增加可达60倍；同时由红外光吸收光谱和核磁共振光谱滴定实验可确知，香豆素衍生物上的两个羰基对金属离子的选择性及结合上扮演相当重要的角色。

Wireless sensors are responsible for measuring current light intensity of the environment.

无线感测器主要的功能为测量目前环境的照度。

The application of cyclic voltammetry in the preparation of electrochemical sensors was studied.

探讨了循环伏安法在电化学传感器制备中的应用。

This system can be used to achieve many different types of sensors in the high-speed data acquisition.

本系统可以实现不同类的多个传感器的高速采集。

Kurt swept his left hand forward, gathering data on his sensors-encrusted glove.

库尔特把左手往前摇了摇，他左手手套上覆盖的一层传感器开始收集数据。

With indefinite noises and nonlinear characteristics, real-time estimating states of the dead reckoning unit is much more difficult than that of the other measuring sensors, which used in vehicle integrated navigation systems.

由于噪声的不确定性和自身的非线性特征，通过航位推算系统精确地估计车辆的状态是实际车辆组合导航中最困难的部分。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。