Abstract

The necessary conditions for the implementation of information technology, which ensure the autonomy of operation while improving the accuracy of the ephemerides and clocks of the existing midaltitude segment of GLONASS, are substantiated. The discussed technology includes methods and algorithms for improving the accuracy of forecasting and refining the ephemerides of navigation spacecraft (NSC) in an inertial coordinate system, predicting and refining the evolution of the Earth’s rotation parameters, and precise synchronization of onboard clocks. Attention is paid to creation of the necessary conditions for the implementation of the first of these components of the proposed technology, which provides prediction and refinement of the ephemerides in an inertial coordinate system, including in the autonomous mode of satellite constellations. The component is implemented in the form of a block of special procedures for using equipment for measuring distances between satellites. In this case, a number of technical problems and related limitations arise that prevent the successful use of such equipment in solving the problem of NSC ephemerides refinement. The approaches and methods proposed by the authors, which are designed to overcome some of the problems and limitations and, ultimately, to improve the accuracy of the formed estimates of NSC ephemerides based on processing the intersatellite measurements formed using the onboard hardware, are described.

中文翻译：

---

基于先进星间测量硬件的GLONASS航天器星历精化信息技术的实现

摘要

证实了实施信息技术的必要条件，确保运行自主性，同时提高格洛纳斯现有中高段星历表和时钟的准确性。所讨论的技术包括提高惯性坐标系中导航航天器（NSC）星历表的预测和细化精度、预测和细化地球自转参数演化以及星载时钟精确同步的方法和算法。重点关注为实施所提议技术的第一个组成部分创造必要的条件，该技术提供了惯性坐标系中星历表的预测和细化，包括卫星星座的自主模式。该组件以一组特殊程序的形式实现，用于使用设备测量卫星之间的距离。在这种情况下，出现了许多技术问题和相关限制，阻碍了此类设备成功解决 NSC 星历精化问题。描述了作者提出的途径和方法，旨在克服一些问题和限制，并最终提高基于处理使用星载硬件形成的卫星间测量结果的 NSC 星历表形成估计的准确性。出现了许多技术问题和相关限制，阻碍了此类设备成功地解决 NSC 星历精化问题。描述了作者提出的途径和方法，旨在克服一些问题和限制，并最终提高基于处理使用星载硬件形成的卫星间测量结果的 NSC 星历表形成估计的准确性。出现了许多技术问题和相关限制，阻碍了此类设备成功地解决 NSC 星历精化问题。描述了作者提出的途径和方法，旨在克服一些问题和限制，并最终提高基于处理使用星载硬件形成的卫星间测量结果的 NSC 星历表形成估计的准确性。