同步

Its final target is to fully digitize the analogue receiver. The all digital receiver not just means digitizing every unit of the analogue receiver, but is a new receiver architecture. The two outstanding characters of this new architecture is: 1 It uses a high stable oscillator to generate a fixed frequency source. And both the sample signal and the local carrier required are obtained from it. 2 Once the received signal has been sampled by a high speed A/D converter, some digital signal processing algorithms will be used to realize all further processes, such as digital down-converting, match filtering, symbol timing, channel equalizing, carrier synchronizing, demodulating and decoding.

全数字接收机并不是简单地将传统的模拟接收机中所有的部件数字化的结果，而是一种全新的接收机体系结构，这种新的体系结构具有两个最为突出的特点：1）采用高稳定度晶体振荡器产生一个固定的本地频率源，接收机中所需的采样时钟信号和本地载波均从这一固定频率源得到；2）接收信号一旦经过高速模数转换后，余下的工作如频率变换、匹配滤波、定时同步、信道均衡、载波同步、符号解调、判决与译码等全部由数字信号处理算法来实现。

They then defer work to this process either asynchronously or synchronously.

然后它们按照程序的要求来同步或不同步的工作。

By using synchronous rectifier, a higher efficiency low-voltage output DC/DC converter module can be achieved. This paper presents a kind of synchronous rectification DC/DC converter, which includes active clamp circuit, insulating transformer, and current double synchronous rectifier.

为提高低输出电压的DC/DC变换器的效率，提出了一种倍流同步整流有源箝位DC/DC变换器，电路拓扑主要包括有源箝位电路、隔离变压器和倍流同步整流电路。

A new type high efficiency synchronous step-up DC/DC converter for hand-held device is designed in this thesis. It works in the PFM mode, and its switching frequency can up to 500 KHz. It offers a built-in synchronous rectifier that reduces size and cost by eliminating the need for an external Schottky diode and improves overall efficiency by minimizing losses.

本文设计了一种用于移动电子设备的高效同步整流的DC/DC升压芯片，该芯片采用PFM调制方式，工作频率最高可达500 KHz，内部集成功率管作为同步整流管，代替传统的肖特基二极管，导通电阻仅有0.4？

Ex space heater is an essential part of increased safe brushless excitation synchronous motor, whose performance has great effect on service performance and Ex property.

防爆空间加热器是增安无刷励磁同步电动机中的一个重要部件，其性能对整个电机的使用性能、防爆性能有很大影响，文章介绍了增安型无刷励磁同步电动机用防爆空间加热器总功率的确定、电加热元件居里点温度、表面热负荷的计算及组装等，并给出了设计实例。

An equation is derived by theoretical analysis, to establish a relationship between suspended sediment concentrations and ADCP echo intensity output. For the survey at the entrance to Jiaozhou Bay, an ADCP is mounted on a moving vessel; the calibration coefficient in the equation is determined by in situ measurement. Then, a semi-empirical formula is obtained and used to calculate suspended sediment concentration profiles along several crosssections.

理论分析获得了海水中悬沙浓度与ADCP输出的回声强度之间的函数关系式；在胶州湾口门进行走航式测量，同步采水样进行现场校正来率定相应的ADCP声学信号，获得了计算悬沙浓度的半经验公式；进而得到走航断面准同步的悬沙浓度剖面。

It has been pointed out that declassification can be realized by reconstructing phase space. The method presented in this paper constructs the chaotic systems using neural networks.

本文将神经网络观测器与混吨同步控制问题结合起来，在假定混饨系统能够分解为线性部分和非线性部分的前提下，利用神经网络逼近混饨系统的非线性部分，设计出了一种利用pF神经网络的状态观测器，可以完成混饨系统的同步控制。

The architecture for this system eventually foresees using five satellites in geosynchronous orbit and up to 30 non-GEO platforms.

这个系统的架构最终预计用上位于地球同步轨道和多至 30 颗非同步轨道平台上的 5 颗卫星。

Thearchitecture for this system eventually foresees using fivesatellites in geosynchronous orbit and up to 30 non-GEOplatforms.

这个系统的架构最终预计用上位于地球同步轨道和多至30 颗非同步轨道平台上的 5 颗卫星。

His problem can be solved by adopting parameter configuring and TPCR model. The TPCR IP core is made up of the padded delay cell and re-synchronization cell. The padded delay cell specifies and restricts the interface timing of the IP core, making it possible for the SOC designers to estimate the margin of the interface timing at every design stage and making the IP core integrated in SOC seamlessly without the glued logic. The re-synchronization cell bridges different clock domains and asynchronous signals, ensuring that IP core carries out the transfer of the asynchronous signals.

PCR IP核模型由弹性延迟单元和再同步单元组成，其中，弹性延迟单元规范了IP核的接口时序约束，使得SOC集成者能够在设计的各个阶段，估算IP核的时序裕度，并能够在集成时无缝集成到SOC中而无需加入粘合逻辑；而再同步单元增加了IP核接口在不同时钟域和异步信号之间的桥接功能，保证IP核能够可靠地完成异步数据的传输。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。