航天器的非相干高精度测速方法及实现

随着深空探测和天基测控系统的发展和应用，采用相干应答机将使星载系统变的复杂且测速精度很难提高。本文对非相干测速原理进行了讨论和公式推导，给出了系统设计方法。在精度分析的基础上，给出了设计参数图表。分析了非相干测速系统中测距音辅助捕获的实现方法，并分别讨论了ESA标准和CCSDS标准情况下非相干测速的实现方法。

Realization of Non-coherent High-precision Velocity-measuring Method for Space Vehicles

With the development and application of deep space exploration and space-based TT&C systems, adopting coherent transponders will make the onboard system complex and difficult to improve the velocity measurement precision. In this paper, principle of non-coherent velocity measurement is discussed, related equations are deduced, and the system design method is given. On the basis of precision analysis, the parameters and diagrams are provided. The method for range tone acquisition in non-coherent velocity-measurement systems is analyzed. Finally, the realization of non-coherent velocity-measurement for ESA standard and CCSDS standard is discussed respectively.