文中从导航电文设计的角度改进了现有的导航系统。通过分析北斗卫星系统导航电文设计方法,提出基于正交频分复用调制(OFDM)技术的导航电文设计。新的电文设计可以实现所有卫星并行传输每颗卫星的星历,可以极大提高中远程反舰导弹载体的定位速度与精度,更有效的利用了有限的导航电文资源,增强了系统抗干扰能力,具有超越现有方法的优势与发展潜力,对提高舰载中远程反舰导弹的飞行精度具有很好的现实意义。

This paper improved the existing navigtion system from the perspective of navigation message design. Through the anglysis of the navigation message design of Beidou Navigation system, the paper proposed a new design of navigation message based on orthogonal frequency division multiplexing (OFDM). The new design enabled a parallel transmission of the ephemeris of all satellites by every satellites, which significantly improved the positioning speed and precision of the medium-long range anti-ship missile. It also used the limited resources of the navigation message more effectively and enhanced the anti-jamming capability of the system, which possessed both advantages and potentials beyond the existing methods. And it had a good significance to improve the flying accuracy of the medium-long range anti-ship missile.