插入误差

A general form of D-FOG has been proposed in order to lower the bias drift and several forms of that have been studied:(1) The Blake type in which a depolarizer is inserted between the polarizer and coil-coupler of D-FOG can suppress the intensity error but not change the magnitude order of the amplitude error.(2) The type with two Lyot depolarizers added in the ends of sensing coil can suppress efficiently the both errors.

为了减小D-FOG漂移，作者提出去偏陀螺的一般形式，并分析其中几种重要形式：（1）在偏振器与环分束器之间插入Lyot去偏器的Blake形式，可以有效地降低强度误差但不改变振幅误差的量级；（2）在传感环两端各插入一个去偏器可以有效地抑制这两种误差。

The adaptive program is calculated by T-B stress recovery scheme and z-z error estimation, the error is estimated by energy norm of difference of recovery stress and meshless stress. If the local relative error exceeds the limit relative error, then new nodes will be generated at the high error area.

本研究的自适应方法采用TB应力平滑技术和Z-Z误差估计，利用平滑应力和无网格法所得应力解差值的能量范数来估算误差，如果局部相对误差超过了允许误差，则在高误差域插入新的离散点进行加密。

The basic idea Is: using the standard value inserting the dynamic measuring errors which involve systematical errors and random errors, constructing the original error model which is revised at the same time and follows the variable law of the dynamic measuring errors, establishing a more suitable error model.

基本思想是：利用标准量插入动态测量数据实时分离含有系统误差和随机误差的动态测量误差值，建立误差的初始数学模型，并根据不断获得的标准点处的测量误差，实时修正或校正所建的初始误差模型，使误差模型不断跟踪动态测量误差的变化规律，建立更加符合动态测量过程的误差模型。

Based on the analysis of the Doppler effect of the mobile channel, the performance of two MIMO-OFDM systems (STTC-OFDM and SFBC-OFDM) in the fast-moving environment is studied. Then, the algorithm for channel estimation based on the training sequence is extended into the fast-moving environment by introducing the space-frequency coding, the method of the equal-interval pectinate pilot-inserting, and the complete Maximum-Likelihood space-frequency decoding.

针对快速移动环境中存在的多普勒效应，研究了两种多输入多输出正交频分复用系统在快衰落信道中的误码性能，采用空频编码梳状等间隔导频插入方式，以及完全最大似然空频分组码解码算法，使用导频与接收信号进行信道参数估计，将一般多输入多输出正交频分复用系统中的基于训练序列的最小均方误差信道估计算法推广到了快衰落信道环境中。

According to the recommended frame structure of IEEE802.16,the independent correlation of multiple preambles and the unique words in data sequence were adopted in the algorithm,and the initial timing offset was estimated.

该算法基于IEEE802.16推荐的帧结构，利用多个前导字的独立互相关特性和数据序列中插入的独特字，对定时误差进行初始估计，并用内插环路进行定时估计误差的跟踪，获得定时同步结果。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐