The realization of square-root information filtering and smoothing in orbit determination software is discussed, a new real-time quality control method based on SRIF/SRIS is presented.

• 摘要从均方根信息滤波和平滑的基本原理出发，结合卫星定轨的实际特征，导出了其在精密定轨软件中实现的详细公式；