文档介绍：GPS导航解算仿真系统
摘要
全球卫星定位系统是具有全球性、全能性(陆地、海洋、航空与航天)、全天候优势的导航定位、定时和测速系统。它汇集了当代最先进的空间技术、通讯技术及微电子技术,以其定位精度高,全天候获取信息,用户接收设备轻巧、价格比较低廉等诸多优点而被世人注目,在很多领域获得了应用。
GPS用户部分的核心是GPS接收机。其主要由基带信号处理和导航解算两部分组成。导航解算部分主要包括根据导航数据中的星历参数实时进行各可视卫星位置计算。此次设计是针对导航解算仿真系统的Matlab仿真实现,因要求不高,所以对卫星运动做了理想化处理,摄动力对卫星的影响忽略不计(所以为无摄运动),采用开普勒定律及最小二乘法计算其轨道参数,对其运动规律进行简略分析,并使用Matlab编程仿真实现了卫星的运功轨道平面、运动动态、可见卫星的分布及利用可见卫星计算出用户位置。
关键字:GPS导航解算无摄运动伪距 matlab仿真
Simulation On GPS Navigation Solution System Using MATLAB
Abstract:The global positioning system is a global, versatility (land, sea and air and space),all-weather advantage of navigation and positioning, timing and speed system. It collects the contemporary most advanced technology, munication technology and the space of microelectronics technology, with its positioning accuracy, all-weather information, users receive lighter, the price is cheap equipment advantages of men, and in many fields.
GPS is the core of the user part of the GPS receiver. The main by the baseband signal processing and navigation solution of two parts. Navigation solution, including some of the major navigation data based on parameters in the ephemeris satellite positions in real-putation of the visual. The navigation solution designed for matlab Simulation Simulation System, for less demanding, so do the idealized satellite motion processing, the impact of the satellite perturbation is negligible (so as not perturbed motion), the use of Kepler Law and the least squares method to calculate the orbital parameters, its law of motion for a brief analysis and simulation using matlab programming the pump power to achieve the satellite orbital plane, movement dynamics, the distribution of visible satellites and the use of visible satellites to calculate the location of the user.
Key words:GPS navigation solution;Non-disturbed motion;Pseudorange;Matlab simulation
目录
第1章前言 1
课题背景 1
本课题研究的意义和方法 2
GPS的发展简史及系统概述 3
第2章 GPS的坐标、时间系统和卫星的运动 5
地球坐标系 5
时间系统 7
卫星的运动