基于Flower星座的区域卫星导航系统

Regional satellite navigation system based on Flower constellations

在Flower星座设计方法的基础上,提出了一种新的区域卫星导航系统设计方法.利用2个Flower星座,通过Flower星座模型精确计算导航Flower星座(NFC)中每个卫星的6个轨道参数,得到一个区域卫星导航系统NFC.NFC可以分阶段部署,开始由8颗卫星组成,补充发射6颗卫星以后组成完整的系统.对中国区域的几何精度因子(GDOP)仿真证明,NFC的平均GDOP值为2.113.与国内已经提出的几种区域导航系统及GPS,GLONASS,Galileo等全球卫星导航系统相比,NFC的GDOP性能与Galileo系统相当,远优于其他系统.NFC较高的导航精度和经济性证明基于Flower星座的区域卫星导航系统设计方法是有效的.

A novel regional satellite navigation system design method is proposed based on the Flower constellation design scheme. A navigation Flower constellation （NFC） included 2 Flower constellations. Through the Flower constellation model, the six orbital parameters of each satellite are de- signed concretely. The deployment of the NFC is progressive, starting with eight satellites, more affordable capacity that can be increased in stages as necessary by launching additional six satellites. The simulation of the geometrical dilution of precision （GDOP） performance for china showed that the mean GDOP value of NFC is 2. 113. Moreover, GDOP performance of NFC was compared with GPS, GLONASS, Galileo and some other navigation constellations proposed by national study groups. The results demonstrated that NFC was same with Galileo and was much better than the other satellite navigation systems. Therefore, the high navigation precision and economic performance proved that the regional satellite navigation system design method based on the Flower constellation design scheme was effective.