摘要
伪卫星既可以作为全球导航卫星系统的增强系统,又可以作为一种独立的导航定位系统,在比较苛刻的观测条件下具有重要的应用意义。由于在一般应用中,伪卫星与接收机特殊的空间相对关系,使得对流层延迟成为伪卫星导航中一种重要的误差源,且与传统的全球导航卫星系统的改正方法有较大区别。参考诸多外文文献中提及的一种纯伪卫星对流层延迟估计方法,对方法进行相关改进,扩大了方法的应用范围,并进行了仿真验证。仿真结果表明,改进方法简单、准确、有效,且精度较高,可以应用于接收机处于任何仰角和高度情况下的纯伪卫星导航定位。
The pseudolite either as an enhanced system of global navigation satellite system, but also can be used as a stand alone navigation system, has important applications on relatively harsh conditions of observation. In general applications, the special relative space relationship between pseudolite and receiver makes the tropospheric delay become an important error source, and the estimation method is quite different from the one for traditional global navigation satellite system. An estimation method of pseudolite tropospheric delay referred to in many foreign literatures is introduced and improved, and the improved method expands the application range. The simulation results show that the improved method is simple, accurate and effective, and it has high precision. The method can be applied to pseudolite positioning of any elevation and altitude situations.
出处
《遥测遥控》
2014年第2期14-18,59,共6页
Journal of Telemetry,Tracking and Command
