未克服的

In this paper, a novel synchronization acquisition approach using the early-late gate for FFH/BFSK system is proposed, and it is based on frequency-PN sequence double pattern. Analytical and numerical results show the following advantages: the decision of threshold is more simple and accurate, and it overcomes the unreliableness of one-hop data demodulation, the unreliableness is caused by the not-alignment hop window of transmitter and receiver.

摘要针对FFH/BFSK系统的同步难题，该文提出了一种基于频率和PN序列双图案的早迟门同步捕获方法，理论分析和仿真结果显示，该方法门限的选择更为简单、准确；克服了全跳解调时由于收发窗口未同步引起的解调不可靠性。

According to Meese's exchange rate model in 1986, in this paper, we modified Meese's (1986) model and suppose the Interest Rate Parity is untenable, the risk premium factor and real exchange rate parameter are considered, and the Purchasing Power parity doesn't follow random walk, we derive our modified equilibrium model. Base on the State Space Model, we try to estimate bubbles and risk premium which are unobservable variables by Kalman Filter to test which one is or both are the main factors that to cause the real assets price biased from the market fundamental price.

本文是以Meese(1986)所决定的汇率模型为基础，但Messe一文并未讨论到风险溢酬的问题，故本文为了克服此一缺憾，而假设未抛捕的利率平价说(uncovered interest parity，UIP)不成立，以加入风险溢酬因子，且更进一步假设偏离购买力平价理论(purchasing power parity，PPP)不服从随机漫步，若如此则顺利将实质汇率变数纳入於模型中，重新建立均衡汇率模型，为了验证本文所创立的模型，实证方法以状态空间模型为基础，运用卡门滤波器递回法来估计不可观察的变数，以观察台湾的外汇市场上是因泡沫现象还是风险溢酬造成资产价格偏离市场基要价值或是两者皆是造成实际资产价格偏离市场机要价格的因素。

Compared with uncoded system, the Turbo-coded optical wireless system improves the performance of optical wireless link because Turbo code compensates losses and noises of link and improves jamming-rejection ca...

比较了基于Turbo码的大气无线光通信系统与未编码大气无线光通信系统，发现Turbo码技术能够很好地补偿和克服各种衰减和噪声，提高了系统的抗干扰能力，使系统的性能得到了很大的提高。

The recursive least-squares estimation method is used to estimate the parameters in the modelled part of the robot dynamics, and the parameters is used to form the feedback control based upon the so-called"inverse system method". The unmodelled part of the robot dynamics is compensated by a learning control law. This not only increases the learning convergence speed and the control system robustness, but also extends the control method to non-repetitive tasks after sufficient learning.

采用递推最小二乘辩识方法来辩识机器人动力学特性中可建模部分的模型参数，并以此来构成反馈控制策略，而对未建模动特性和未知扰动的影响采用学习控制的方法予以克服，从而提高了学习控制过程的收敛速度和鲁棒性，拓宽了它的适用范围。

Its dominant merit is that it overcomes the deficiency of existing methods based on numerical calculation and can realize significant or even absolute decoupling decoupling between the nominal responses of system outputs. Moreover, the adjustable parameters of the decoupling controller matrix can be tuned on-line in a monotonous manner to cope with the unmodelled process dynamics.

其突出优点是克服现有的数值化求解方法的局限，能够实现标称系统输出响应之间的显著乃至完全解耦，并且能够在线以单调方式整定解耦控制器矩阵的可调参数来适应被控过程的未建模动态。

Second, considering the influence of well resistance, smear effect and structure breakage of thick soft clay, the equivalent calculation method is proposed. That is, the partially penetrating sand drain ground is viewed as the double-layered ground, and its consolidation is analyzed with 1-D consolidation theory, through the transformation from 3-D consolidation to 1-D consolidation in the region of sand drain. This can overcome the disadvantage that the excess pore water is discontinuous between the region of sand drain and under-lying soft layer. To the double-layered ground, based on the consolidation mechanism under surcharge, the excess pore water pressure calculation formula is deduced under the condition of multilevel equably loading or unloading, which perfects the consolidation theory.

然后，在充分考虑竖井区井阻、涂抹作用以及土体结构损伤破坏对固结影响的基础上，将未打穿竖井地基合理地转化为双层地基，按一维固结理论计算，克服了传统固结计算方法在竖井处理区与下卧层交界面处存在孔压间断的缺点；在此基础上，从超载预压法的基本原理出发，分析了双层地基超载预压固结、沉降机理，推导了多级等速加、卸载情况下双层地基的固结计算公式，进一步完善了双层地基固结理论。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了