最后，研究了基于估计的同步捕获算法。
Finally, the timing acquisition algorithm based on estimation is studied.
同步捕获后则通过锁相环技术跟踪长突发的同步变化。
After attaining synchronization, the phase offset due to frequency offset estimation error is tracked with a phase locked loop.
本文针对短波高速跳频通信系统的同步捕获技术做了详细的研究。
In this paper, we focus on shortwave fast frequency-hopping system synchronization acquisition techniques.
本文还讨论了两种基本的快速同步捕获的方法，并给出了试验结果。
Two fundamental methods of fast synchronization are discussed in this paper, and experimental results are given.
本文讨论直接序列扩展频谱通信系统中有关同步捕获和跟踪的问题。
In this paper, the theory of spread spectrum communication technology is presented, the structure and the operating principle of spread spectrum communication system are discussed.
同步系统是跳频通信电台的核心，而同步捕获又是整个同步过程的关键。
Synchronization system is the core of the frequency-hopping communication system, and synchronization acquisition is the key to the entire synchronization process.
第四章选择早迟门同步捕获法进行了的短波高速跳频系统的同步软件设计。
Chapter IV chooses early-late door synchronization acquisition algorithm to design the shortwave fast frequency-hopping synchronization system.
现在我们已经准备就绪，可以从newstaff表导出数据，并同步捕获数据库锁快照了。
We are now ready to export the data from the NEWSTAFF table, and to simultaneously capture a database lock snapshot.
全文的主要内容如下：第二章研究了大符号率偏差情况下的辅助符号同步捕获方法。
The main contents of this dissertation are as follows: Chapter 2 investigates the symbol synchronization acquisition-aiding method with larger symbol rate offset.
接收机采用了匹配滤波器同步捕获法和包络相关同步跟踪环来实现伪码(PN)的同步。
A synchronous capture method of adaptation filter and related synchronous envelope tracking circle were applied to achieve synchronization of PN by receiver.
第二章研究了几种适用于短波高速跳频系统的同步捕获算法，推导了这几种算法的理论性能。
Chapter II studies some synchronization acquisition algorithms which is suitable for shortwave fast frequency-hopping system and deducts their theoretical performances.
同时跳频同步也是跳频通信系统开发的难点，特别在高跳速工作时实现同步捕获和跟踪需要精心设计方案。
Meanwhile, synchronization is also the difficulty of the development of FH system, which needs supplicated design especially in the fast frequency hopping (FFH).
方案中提出了：相关搜索、FFT检测信号载波的方法，解决了低信噪比、大频差条件下扩频码的同步捕获难题；
The method was Correlate search and FFT carrier detection, which could solve the problem of the capture of the spread spectrum code under the condition of low SNR and big frequency offset.
本文讨论直接序列扩展频谱通信系统中有关同步捕获和跟踪的问题。给出了直接扩频系统的滑动搜索自同步方案。
Contributed to the acquisition and Code tracing for the DS spread spectrum com munication systems, this paper presents the scheme of sliding search self-synchronization for a DS system.
SR- 5124是首个集成电子情报与通信情报的信号情报系统，能够同时同步捕获无线电、卫星通信、遥感勘测以及雷达信号。
The SR-5124 is the first SIGINT system that integrates ELINT and COMINT that captures radio, satcom, telemetry, and radar signals simultaneously and synchronously.
该码型具有和原始AMI码类似的功率谱，尽管其编码效率不高，其快速同步捕获的特性可以避免数据的丢失，提高了数据的可靠性。
This type of code has the similar power spectrum to the original AMI code, and though its code efficiency decreases, rapid synchronization will avoid losing data and increase the credibility of data.
介绍了WCDMA的同步信道和匹配滤波器实现同步的基本原理，提出了基于匹配滤波器的WCDMA同步捕获方法，并进行了计算机仿真。
This article introduces the SCH in WCDMA and the rationale of synchronization based on marching filter. Then it proposes a capture method of SCH based on marching filter and simulates it by computer.
利用符号或帧速率来进行同步捕获，导出了与信道振幅无关的密集多径下同步捕获的广义似然比率测试(GLRT)，来估计出现在符号位的有效信号增益。
Timing acquisition is realized in symbol and frame rate and GLRT is derived under dense multipath channel, which is unrelated to the amplitude of the channel.
然而，对于那些具有较高程度的数据同步流量的系统，捕获的失败事件的数量可能会达到一个很高的水平。
However, for systems with high levels of data synchronization throughput, the number of captured failed events can potentially reach high levels.
简单说来就是，在同步请求期间所有与portlet相关的页面在被捕获的状态下在PocketPC上都变得可以访问。
Simply put, all the pages associated with a portlet are made available on the Pocket PC in the state they were captured in during a synchronization request.
这时就会缓存默认的InitialContext ，以避免每次都捕获它，并且任何通过默认的内容使所有的查找调用同步。
The default InitialContext is cached to avoid obtaining it each time, and any lookup call done via this default context is synchronized.
在捕获视频信号时，需要用视频信号的参数实现数字化过程的同步。
It is required in capture of video to synchronize the digitizing process with the parameters of the video signal.
DataSet设计器被加强后，能与ado.net同步服务和SQLServer 2008变更数据捕获器进行更紧密的集成。
The DataSet designer has been enhanced to integrate more tightly with ADO.NET Sync Services and SQL Server 2008 Change Data Capture.
作为地面站的一个核心功能之一—捕获并跟踪目标，涉及一个技术难点，这就是实时同步数据交换问题。
As the one of the earth station 's key functions, searching and tracking the satellite involves the realtime synchronous data exchange, it is a high technology.
本文提出了基于会话的连接与基于变化的数据捕获相结合，利用时间戳的客户端数据优先规则的同步方案。
This paper brings forward a synchronization scheme combines session connection with data gain base on changed, and client side data priority base on timestamp.
分析了其特性，包括编码效率、误码特性、功率谱、帧同步一次通过捕获特性等。
Its properties are analyzed, such as code efficiency, error Bit rate, power spectrum, the acquisition probability of the first frame marker.
创建一个新解释器状态对象。不必要捕获解释器锁，但是当需要同步调用这个函数进行序列化的时候可能需要锁定。
Create a new interpreter state object. The interpreter lock need not be held, but may be held if it is necessary to serialize calls to this function.
分析了MAC的层管理功能，对其中的帧同步维护、捕获和扫描以及功率管理的实现细节作了详细的研究。
Introduced the MAC level management function, has made a detailed introduction on synchronization maintenance, the capture and the scanning of beside the power management realization detail.
模型中定义了复制管理、数据捕获、同步、冲突检测处理、数据传播五个部分。
The model has composed of five parts: replication management, data capturing, synchronization, conflicts detection and solution, data propagation.
文中提出了一种低复杂度的同步估计，来实现载波频率捕获和跟踪。
In this paper, a novel frequency synchronization estimation algorithm is provided to achieve carrier frequency capture and tracking.
应用推荐