基于蜂窝构型的空基伪卫星定位网络  

Pseudolite Positioning Network Based on Honeycomb Distribution

作　　者：张春海[1,2] 何成龙[3] 王垚[3] 

机构地区：[1]北京理工大学信息科学技术学院,北京100081 [2]北京环球信息应用开发中心,北京100094 [3]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2012年第10期1-3,12,共4页Radio Engineering

基　　金：国家科技支撑项目(2011BAH05B00)

摘　　要：伪卫星是基于非星基平台提供附加导航信号的设备,可与现有导航卫星共同工作或独立工作,能有效地改善导航性能。当伪卫星独立工作时,其空间分布对导航定位性能和应用有很大影响。针对基于中高空飞行器平台伪卫星网络的定位特点,提出一种高/低空混合蜂窝构型,并对可见性、远近效应和精度因子(DOP)分布进行了仿真。仿真结果表明,蜂窝构型具有覆盖范围大、拓展方便和DOP好的优点,能够提高覆盖地域的定位性能。Pseudolite offers additional navigation signal based on non-satellite platform,working with existing navigation satellite system or alone,can effectively improve navigation performance. The geometric distribution of pseudolites produces great effect on posi- tioning performance and application. Considering the characters of pseudolite network based on medium/high altitude aircraft,the paper gives a high/low attitude honeycomb distribution and simulation results of visibility,near-far effect and dilution of precision（DOP）. The results show that the honeycomb distribution network has advantages of great coverage area,easy extension and low DOP,which can im- prove the positioning performance in the navigation service area.

关 键 词：伪卫星 蜂窝结构 远近效应 DOP 

分 类 号：TN96[电子电信—信号与信息处理]