摘要
舰船的卫星和无线电导航系统很容易因受到敌方攻击或干扰而失能失效。天文航海定位方法因具有独立自主、不受电磁干扰等优点,可以发挥重要保底作用。针对传统六分仪观测天体高度定位存在依赖水天线、高度值修正需要手工查算表册、过程繁杂、容易出错等缺点,开发了一种基于Android平台的天体高度观测App。测高原理的实质是以重力加速度方向为垂直基准,测量加速度传感器的输出量换算为角度。App嵌入了PyEphem星历库,可以对天体高度观测值自动修正。天体高度观测精度基本满足天文定位要求,该App未来还有进一步提高精度、增加定位功能的潜力。
The satellite and radio navigation systems of ships are vulnerable to the enemy’s attack or interference and lose their effectiveness in the context of "navigation warfare". The astronomic navigation positioning method can play an important role in ensuring the minimum because of its independence, freedom from electromagnetic interference and other advantages. In view of the shortcomings of traditional sextant in observing celestial body height positioning, such as relying on water antenna, manually checking the calculation table book for height value correction, complicated process, and easy to make mistakes, a celestial body height observation app based on Android platform is developed. The essence of the principle of height measurement is that the direction of gravity acceleration is taken as the vertical reference,and the output of the measuring acceleration sensor is converted into angle. The App is embedded in the PyEphem ephemeris library, which can automatically correct the astronomical altitude observations. The accuracy of celestial body height observation basically meets the requirements of astronomical positioning. The App has the potential to further improve the accuracy and increase the positioning function in the future.
作者
吴浩
周爱军
WU Hao;ZHOU Aijun(No.5 Student Team,Dalian Naval Academy,Dalian 116018,China;Dept of Navigation,Dalian Naval Academy,Dalian 116018,China)
出处
《传感器世界》
2022年第11期21-26,共6页
Sensor World
