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1)  PRN code acquisition and tracking
伪码捕获和跟踪
1.
The paper gives a mathematical model for the digital PRN code acquisition and tracking process, derives expressions of the detection and false-alarm probabilities, presents the improved double-dwell search strategy and analyzes the dynamic tracking performance and influence of input noise mathematically.
建立了伪码捕获和跟踪过程的数学模型;推导出了伪码捕获的检测概率和虚警概率,提出了改进的双Dwell搜索方法;对一阶、二阶、三阶DDLL的动态跟踪性能及输入随机噪声影响进行了定量分析。
2)  PN code acquisition and tracking
伪码捕获与跟踪
3)  acquisition and tracking
捕获和跟踪
1.
This paper introduced a kind of direct sequence spread spectrum software radio system implemented by FPGA and DSP,discussed some digitalized processing techniques,such as the realization of digital down converter,acquisition and tracking of PN code with high speed and so on,made a simulation experiment,the result indicated the feasibility of system design.
介绍了一种利用FPGA和DSP实现直接序列扩频软件无线电系统,具体讨论了利用FP GA实现了数字下变频(DDC)和完成PN码的快速捕获和跟踪等数字化处理技术,并进行了仿真实验,实验结果表明了系统设计的可行性。
2.
An acquisition and tracking algorithm for spread spectrum altimeter was studied.
研究了一种扩频体制高度表的捕获和跟踪算法,并基于Matlab软件平台对该算法进行了仿真,仿真结果表明该算法能够较快实现码的捕获和跟踪,可应用于扩频高度表体制接收机的设计。
4)  acquisition and tracking
捕获跟踪
1.
The core of the whole project is to design a simplistic acquisition and tracking structure,which can be realized reduction by hardware.
本课题是项目“GPS接收机设计”的子部分,整个项目的最终目的是要设计出一款嵌入手表,用于精确授时的GPS Clock芯片,而如何创新出适用于此芯片,硬件易实现的,简化型捕获跟踪结构便成为了整个项目的核心。
5)  PN code acquisition
伪码捕获
1.
Study on one DS-SS PN Code Acquisition System;
一种DS-SS伪码捕获系统研究
2.
PN code acquisition method based on prepositive 3-order correlated detection
基于前置三阶相关检测的高性能直扩伪码捕获
3.
This paper proposed a PN code acquisition method based on IF sampling to implement a new type of satellite receiver.
本文针对新型的卫星用接收机伪码捕获的性能指标要求 ,设计了一种基于中频直接采样数字化的伪码捕获算法。
6)  PN Acquisition
伪码捕获
1.
This paper introduces the realization of a PN acquisition scheme in burst DSSS communication,which is compared with traditional classical methods and attains a better result.
提出了一种混合多址系统伪码捕获的实现结构,并且与几种经典结果进行了性能比较,结果表明这种方法具有一定优越性。
2.
A new method called subsection polar correlation is introduced and then is used in estimation of several DS-BPSK signal parameters and in PN acquisition.
介绍了一种分段极性相关的方法,并将其应用于DS-BPSK信号的多个参数估计和伪码捕获。
补充资料:HP-241B色带打码机/HP-30手动打码机
 


     适用材料:
    塑料薄膜PT、PE、PVC、OPP、KT、铝箔、饮料瓶商标;各种塑料复合材料、塑料袋、纸(不干胶、卡片)、皮革、布;包装容器袋、塑料制品;电子元件外壳。

     工作原理及结构特点:
    采用热打印带代替油墨打印,采取特殊的活字装卸换字结构,可在任何软包装材料上打印。印字清晰,不易擦掉;卫生干净,无油墨污染之优,是一种经济卫生的打印方式。

  HP-241技术参数:
最高速度:70-120次/分 可调
打印间距:任意
打印行数:1-3行
电 压:220V±10% 50Hz
功 率:200W
热打印带宽度:25-35mm

HP-30技术参数:
电 源:220V/50Hz
功 率:≤40W
尺 寸:225×200×155mm
重 量:2.5kg
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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