X-ray pulsar navigation precision analysis considering orbit propagation error effects

摘要

Orbit propagation error effects are considered in precision analysis of X-ray pulsar navigation (XNAV) systems which integrating orbit dynamics model and pulse time of arrival observation. Precision analysis model is established, and the concept of optimal pulse observation accumulation time is proposed based on coupling analysis of orbit propagation error, pulsar observation process and pulse time of arrival observation precision. The estimation algorithm of optimal observation accumulation time is presented as an important tool for XNAV observation planning and scheme design.