| 1. | Increased effort to synchronize models with other artifacts , such as source code
需要将模型与其它制品，如源码同步所增加的工作 |
| 2. | Quick and accurate acquest of signal is critical for the utility of an lpi radar
准确、快速的扩频码同步是编码lpi雷达系统实用的前提。 |
| 3. | Pn code synchronization algorithm based on serial - search acquisition scheme and delay - looked loop tracking is discussed in detail
阐述了基于滑动相关捕获及延迟跟踪环跟踪的伪码同步技术的设计与实现。 |
| 4. | The method of picking up synchronizated signal is digital phase - locked loop , which is picking up phase information from the suddenly toggle between codes
提取码同步信号一般采用锁相环技术,利用码元间存在的瞬间跳变获取需要的相位信息。 |
| 5. | To begin with , the dissertation introduces the origin of this project , the content and meanings of its research , and discusses the development of acquisition in inland and oversea
本文研究了卫星导航定位系统以及其用户机中扩频码同步部分中快速捕获算法的发展现状。 |
| 6. | The digital base - band cdma transmitting and receiving scheme is put forward . the scheme uses a technique called as zero medium frequency without the need of pn codes synchronously are resumed
提出了具有免伪码同步恢复、免载波同步提取、免位同步的零中频cdma数字基带发送、接收方案。 |
| 7. | Synchronization technique of spread spectrum code is utilized in two stages . multipath searcher coarsely estimates the pn code phase and code tracking confirm the pn code phase precisely
这需要采用扩频系统中扩频码同步技术,即:多径搜索粗略地估计pn码相位,同步跟踪精确确定pn码相位。 |
| 8. | The design of pn code synchronization should find a trade - off between the performance and the complexity of the reciever . in this paper , the pn code synchronization technique in spread spectrum communication is introduced
本论文首先介绍扩频系统中采用的pn码同步技术,然后结合wcdma上行链路的特点,提出适合wcdma上行链路的扩频码同步方案。 |
| 9. | Secondly , the dissertation presents a 3 - dimensional searching method with afc and pn code synchronization and adaptive array convergence in order to accurately estimate the frequency difference between the received signal and the local oscillator
其次，为了准确估计接收信号和本地振荡器之间的频差，提出了afc 、 pn码同步、自适应阵收敛的三维搜索策略。 |
| 10. | After achieving the synchronization of the pn code and carrier , despreading and demodulating the received dsss signal can be executed with the local synchronized code and carrier . so , lots of energy and fund has been expended on it
直接序列扩频系统只有在完成了伪码同步和载波同步之后,才可能用同步的本地伪码和本地载波对接收的扩频信号进行解扩、解调。 |
