| 1. | Study on a new type of digital coding track circuit
一种新型的数字编码轨道电路 |
| 2. | Coded track circuit
编码轨道电路 |
| 3. | Because multipath searcher and code tracking are accomplished on the hardware , the complexity of the circuit should be concerned
同时由于多径搜索和同步跟踪是在硬件上进行处理,实现电路的复杂度也需要考虑。 |
| 4. | The parallel scheme based on sliding correlation method is proposed in the simulation of acquisition . baseband fully time delay - locked pn code tracking loops are employed in tracking simulation
在对完全互补码捕获的仿真中，本文提出了基于滑动相关法的并行捕获实现方案。 |
| 5. | 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。 |
| 6. | Based on experiments , a 24 - bits absolute photoelectric rotary encoder is presented in this paper . it ' s advantages lie in : 1 . it has a system for thick code tracks to automatically compensate ; 2
本文研究的是24位绝对式光电轴角编码器，此编码器在结构设计上与传统的编码器的不同之处在于： 1 )粗码道光强的自动补偿系统。 |
| 7. | First , we classify the multipath mitigation techniques into four categories , and then the presentation of principles and simulation of performances are done of three widely - used techniques of multipath mitigation , which are based on the code tracking loop with the name of narrow - correlator - spacing technique 、 els ( early late slope ) technique and medll technique . from the presentation and simulation , the medll technique is selected as the multipath mitigation algorithm in signal processing ’ s scope .
本章首先对多径消除技术进行了分类,然后主要对基于码跟踪环路的三种技术-窄相关( narrowcorrelatorspacing )技术、 els ( earlylateslope )技术和medll ( multipathestimatingdelaylockloop )技术-进行原理分析和性能仿真,从中选择medll技术作为接收机信号处理阶段的多径消除算法。 |
| 8. | And the pn code tracking scheme adequate for the wcdma uplink is presented and combined with the mulipath acquisition and channel estimation algorithms to complete the rake receiver scheme . computer simulations show the tracking scheme meets the requirement of wcdma uplink in 3gpp protocols and has good performance
通过大量的计算机仿真和验证，证明本论文提出的同步跟踪方案完全能达到3gpp协议对上行链路接收机的要求，具有较好的性能，同时指出进一步研究和提高的思路。 |
| 9. | Multipath acquisition decide the coarse pn code phase and pick up the available multipath components . following , code tracking confirm the pn code phase precisely and track every multipath component ' s delay drifting due to doppler effect . in this paper , the code tracking technique in spread spectrum communication is introduced
本论文首先介绍了在扩频通信中采用的同步跟踪技术，结合wcdma上行链路的特点，提出了适合wcdma上行链路的pn码跟踪方案，并与现有的多径搜索和信道估计算法构成完整的上行链路rake接收机方案。 |
| 10. | This article focuses on the study of workshop level ' s management reform based on the factory level production management system , to accomplish the process standardization and automatization of workshop work planning management , workshop work management , vehicle vin bar code tracking management , and workshop resources management and control , to finally accomplish the goal to use information technology to support production management modernization
本文着重研究，在工厂级的生产管理系统的基础上向下延伸，着重于车间级管理上进行改革，实现车间作业计划管理、车间作业管理、汽车vin条码追踪管理、车间资源管理与控制的流程化、自动化，达到以信息化支持生产管理模式现代化的目的。 |
