【作者】 杨文文；

【导师】 王景刚；

【作者基本信息】 哈尔滨工程大学 ， 检测技术与自动化装置， 2009， 硕士

【摘要】 本文系统地讨论了伪卫星技术在北斗导航定位系统中的应用,及其对北斗系统定位精度的改进。北斗系统是我国自行设计的区域卫星导航定位系统。由于其定位过程是有源主动定位,容易受到干扰。因此,在现有的系统能力基础上,合理配备伪卫星基站,实现区域性的无源定位具有重要意义。本文提出了一种基于北斗的伪卫星无源区域定位系统,即设置适当伪卫星系统,增加观测量,利用伪距测量方法定位,从而实现系统的无源被动定位。本文首先系统介绍了北斗的定位原理以及定位方法,通过仿真分析了北斗系统增强前的定位精度,随后提出了伪卫星改进方案,分析了伪卫星技术中的几个难点。然后对伪卫星技术改进后的北斗系统进行了分析仿真,讨论了伪卫星基站分布对定位精度的影响,为基站布置提供了一定的依据。随后设计了伪卫星基站的信号发射器部分。理论分析和模拟仿真表明伪卫星系统能有效的改进北斗的定位精度。更多还原

【Abstract】 False artificial satellite technology application in the system fixing position in the Plough navigation the main body of a book has been discussed systematically, the improvement to the Plough system allocation accuracy and their improvement to the Plough system allocation accuracy.The Plough system is the area satellite navigation fixer system that our country designs by self. Since the person fixes position, processis that the active fixing position on self’s own initiative , disturbs easy to. Therefore, go ahead in now available system ability basis , allocate the false artificial satellite base stand rationally, passive realizing a regional fixes position having importance.The system fixing position one kind owing to passive area of false the Plough artificial satellite that the main body of a book has been submitted, is to set up false appropriate artificial satellite system , to increase observation amounts , the passivity making use of false distance to measure method allocation , realizing systematic passive thereby fixes position. Allocation principle and the method fixing position the main body of a book has been discussed first systematically, system strengthens front allocation accuracy by simulating having analysed the Plough, several difficult point in subsequently, having suggested that the false artificial satellite improves a scheme , having analysed the false artificial satellite technology. And then the Plough system improving the day afer tomorrow has carried out analysis on false artificial satellite technology simulating, impact of the distribution having discussed the false artificial satellite base stand subsequently over allocation accuracy, arrange to have provided the certain basis for base stand.The theoretical analysis and the simulation emulation indicate system is feasible have an effect.更多还原