基于伪码测距技术的无线定位系统设计与仿真  

The Design and Simulation of Wireless Location System Based on PN Code Ranging Technology

作　　者：汪夕琳 周亚丽 张佳 WANG Xilin;ZHOU Yalin;ZHANG Jia(College of information and communication engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《全球定位系统》2018年第5期84-90,共7页Gnss World of China

摘　　要：分析、研究了伪码测距技术的基本原理和基于伪码测距技术对空间中目标进行单点静态无线定位的实现方法,重点研究了载波分离与解调、伪码捕获与伪码跟踪等核心模块.采用MATLAB对系统方案进行仿真,验证方案的合理性;在Modelsim软件中采用Verilog语言对伪随机序列的生成载波调制载波分离与解调以及伪码同步进行仿真.根据系统功能,参考软件无线电的设计思想,设计了工作在2.4GHz频段、基于伪码测距技术的无线定位系统硬件平台方案.文中采用理论研究仿真与实际测试对伪码测距技术进行研究实现,采集记录了测试数据,并进行了分析,为后续的方案改进提供了数据参考.This paper mainly studies the basic principle of PN code ranging technology and the implementation of a single point static wireless positioning method based on PN code ranging technology for the targets in space. The core modules include carrier separation and demodulation, PN code acquisition and PN code tracking, etc. MATLAB is used to simulate the system scheme to verify the rationality of the scheme, and Verilog language is used in Modelsim software to simulate the generation of pseudo random sequence, carrier modula tion, carrier separation and demodulation, and PN code synchronization. Based on the design idea of software radio, the scheme of the wireless positioning system hardware platform based on PN code ranging technology is designed in the 2.4 GHz frequency band. This paper adopts theoretical research, simulation and actual testing to research and realize the PN code ranging technology, collects and records test data, analyzes the actual test data, and pro vides data reference for subsequent program improvement.

关 键 词：伪码测距 伪码同步 MODELSIM 2.4GHz频段 硬件平台 

分 类 号：P228.4[天文地球—大地测量学与测量工程]