摘要当前，卫星导航定位系统在各个领域中施展着越来越大的作用。民用和商业方向有 手机软件、车载导航定位系统；军用方向有导弹导航定位，单兵定位等。在此背景下， 为了直观深入地了解北斗卫星定位系统构成原理及其抗干扰性能，本课题在学习熟悉北 斗卫星定位系统的组成、信号的发射和接收原理的理论基础上，搭建相应的仿真电路， 验证其信号的产生、接收和信号的抗干扰性能。在此基础上和 GPS 系统进行比对研究。78937

本文首先对北斗卫星导航信号的生成、发射以及接收原理进行理论研究，在这之后， 在仿真软件 SystemView 中，搭出单颗星、多颗星北斗信号的生成平台、发射平台和接收 平台，基于原理的进行模拟北斗信号的产生与接收。经由仿真分析，验证该仿真系统可 基本完成北斗定位信号的生成和接收，以及探究其抗干扰性能。

毕业论文关键词 北斗卫星定位信号 仿真软件 QPSK 调制 抗干扰性能

毕 业 设 计 说 明 书 外 文 摘 要

Title The simulation research anti-interference of BDS satellite positioning signals based on SystemView

Abstract Today, satellite navigation and positioning system in different areas plays a indispensable significant role 。In the civil business such as mobile phones software,Car navigation system; and in the national defense fields like the application of missile self-position,single-arms orientation instrument,etc。 In this background, in order to get the intuitive and in-depth understanding of the principle of BDS satellite positioning system and anti-interference performance, this topic is based on the study of BDS system composition, principle and signal’ s transmit and receive theory, building the simulation circuit to test signal generating， receiving and anti-interference performance。

In this paper, studying theory of the generation of launch and receive BDS signals principle firstly,then, setting up the single and multiple BDS satellite positioning signal generation transmission and receiving circuit in the software of SystemView, simulating it original in the principle。 The system is verified by simulation analysis that it can basically realize the BDS positioning signal’ s generated and receiving function,and research anti-interference performance。

Keywords BDS satellite positioning signal The simulation software QPSK

modulate anti-interference performance

本科毕业设计说明书 第 I 页

目 次

1 引言 1

1。1 研究背景及意义 1

1。2 国内外研究情况 2

1。3 课题研究内容 3

2 北斗导航系统原理 4

2。1 “北斗一代”定位系统 4

2。2 “北斗二代”定位系统 4

3 “北斗二代”B1 频段信号的结构与特点 8

3。1