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This kind of gyro uses twoposition force feedback balance method and complementary angle correction method to eliminate the effect of gyro constant drift to improve the precision of bearing calcuation .

介绍一种数字式寻北陀螺仪，它立足于国内现有条件，以计算罗经原理为基础，采用双位置力反馈平衡法和补角修正措施，用来消除陀螺常值漂移的影响以提高方位计算精度。

The real-time correcting unit is designed by using the complex curve fitting method, and the dynamic error correction is implemented on line.

采用复数曲线拟合方法，设计了实时修正环节，实现了动态误差的实时在线修正。

to reduce the impact of carrier frequency offset in ofdm system,this thesis designs a new carrier frequency offset estimation scheme for ofdm system.the carrier frequency offset estimation includes acquisition and tracking.we adopt variable step size adaptive algorithm.the acquisition range of the proposed algorithm is as large as one half of the overall signal bandwidth.through this method we can not only avoid the feedback by using forward error correction,but also reduce the times of complex multiplication in order to reduce the power consumption of the system.this algorithm not only has low complexity and fast convergence nut also can improve the demodulation performance of ofdm system.computer simulation illustrates the superior performance of the proposed algorithm with regard to estimation accuracy in both awgn channel and multi—path channel.

摘 要：为了减小正交频分复用系统受频率偏差的影响，在ofdm系统中设计了一种新的载波频偏估计算法。频偏估计包括跟踪和捕获两个阶段，文中采用变步长自适应算法来进行跟踪，这个跟踪算法的捕捉范围是整个信号带宽的一半。通过此方法，不但可以利用前向纠错的方式来避免反馈，而且可以缩减复数乘法的次数以降低计算复杂度和系统功耗。该方法运算复杂度低，并具有较好的收敛性，能改善odfm的解调性能。从计算机的仿真效果可以看出无论是在awgn信道上还是在多径信道上都表现出了卓越的性能。

Static correction is a key basic process in areas with complex surface conditions.

静校正是在复杂地表地区进行地震勘探的一个重要问题，它影响着地震资料的处理结果和勘探效果。

At first, the hydrologic characteristics of estuary region and the current research situation about consistency correction for hydro-sequence and composite probability for tidal level and wave are elaborated.

论文首先阐述了河口地区的水文特性、水文序列一致性修正的研究现状及潮位与波浪组合频率计算的研究现状。

Combining the specific knowledge of computational Model-minimum Error Correction for the haplotype reconstruction problem,an improved particle swarm optimization was proposed to solve the haplotype reconstruction problem.

结合单体型装配问题的计算模型—最少错误纠正模型的特定知识，提出了一种求解单体型装配问题的改进粒子群算法。

Correction coupling centerline, the motor shaft and pump shaft to maintain concentricity.

校正联轴器的中心线，使电机轴与泵轴保持同心。

A novel low conduction loss circuit that can be used for power factor correction is presented in this paper.

中文摘要：本文给出了一种可用于功率因数校正的新型低通态损耗电路。

It is proposed that the overall free energy of a polymer solution has three fundamentally different types of contributions,i.e.the translational,the configurational and the thermal correction parts.

提出了把聚合物溶液的自由能分解为 3部分，平动部分、构象部分和热修正项部分。

The spatial correction capability of AO system can be improved by two or more combinational-DMs with conjugation relationship.

具有光学共轭关系的两个或更多的组合的变形镜可以用来提高自适应光学系统的空间校正能力。

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