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X射线脉冲星导航(X-ray pulsar-based NAVigation,XNAV)是继惯性导航、天文导航、卫星导航之后的一种新型导航技术,由于它可以为大气层外的任意航天器提供自主导航能力且具有诸多优势,近年来受到国内外研究者的极大重视和深入研究。XNAV的研究内容包括相对论框架下的大尺度时空基准和导航模型、X射线脉冲星辐射机制和观测特性、X射线探测器的探测能力和X光子谱的信号处理、动态航天器导航方法和数据处理程序等多个领域,目前已经取得一些阶段性成果。在概述XNAV主要研究内容的基础上,对国内外相关文献中一些存在争议或者没有形成共识的问题提出了看法,对下一步需要解决的问题提出了建议,希望对我国XNAV的工程研究有所裨益。
X-ray pulsar-based navigation (XNAV) is a new type of navigation technology following inertial navigation, astronomical navigation and satellite navigation since it can provide autonomous navigation capability for any spacecraft outside the atmosphere and has Many advantages, in recent years by domestic and foreign researchers attach great importance and in-depth study. XNAV’s research includes large-scale space-time reference and navigation models under the framework of relativity, X-ray pulsar radiation mechanism and observation characteristics, X-ray detector detection capability and X-ray spectrum signal processing, dynamic spacecraft navigation methods and data processing Procedures and other areas, has achieved some phased results. On the basis of summarizing the main research contents of XNAV, this paper gives some opinions on some controversial or non-consensus issues in domestic and foreign literatures and puts forward suggestions on the problems to be solved in the next step, hoping to benefit the engineering research of XNAV in our country. .