• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Spacecraft Technology >IRNSS/NavIC On-Board Time Synchronization with Ground Reference Time
【24h】

IRNSS/NavIC On-Board Time Synchronization with Ground Reference Time

机译：IRNSS / NAVIC板载时间与地面参考时间同步

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Indian Regional Navigation Satellite System (IRNSS) also named as Navigation with Indian Constellation (NavIC) is self-evolved regional navigation system in India. The IRNSS signals received by user are time tagged with on -board time. IRNSS on-board satellite time is represented in week number and time of week that can accurately represent IRNSS system time on correcting with broadcast clock parameters. After launching the satellite with navigation payload switch on, on-board satellite time starts from Week Number 0 and Time of week 1. In order to obtain valid measurements, on-board satellite time has to be synchronized to IRNSS Network Time (IRNWT) which is reference to the IRNSS system time. This paper describes IRNSS ground reference timing system, on-board timing system and the strategy for IRNSS on-board system time synchronization to the IRNWT using one way range measurements with an accuracy of less than 97.75 ns. The residual and accumulated on-board satellite time error over a period due to on-board clock drift and aging is broadcasted as satellite clock corrections through navigation message. Resolution and maximum range of IRNSS satellite clock correction parameters are provided. After onboard time synchronization, procedure to compute satellite clock correction parameters is addressed. These clock parameters need to be broadcasted to the user to account on-board time offset with respect to ground reference time.
机译：印度区域导航卫星系统（IRNSS）也被称为印度星座的导航（Navic）是印度自我发展的区域导航系统。用户收到的IRNSS信号是标记的时间标记为-board时间。 IRNSS板载卫星时间在周数和时间内表示，可以准确地表示使用广播时钟参数校正IRNSS系统时间。在通过导航有效载荷开关启动卫星之后，在一周数0和第1周的时间开始，在第1周的一周数和时间。为了获得有效的测量，必须与IRNSS网络时间（IRNWT）同步卫星卫星时间参考IRNSS系统时间。本文介绍了IRNSS地面参考时序系统，板载时序系统和IRNSS在机板系统时间与IRNWT的策略使用一种方式测量，精度小于97.75 ns。由于板载时钟漂移和老化引起的剩余和累积的车载卫星时间误差被广播为卫星时钟校正通过导航消息。提供了IRNSS卫星时钟校正参数的分辨率和最大范围。在船上时间同步之后，解决了计算卫星时钟校正参数的过程。这些时钟参数需要广播到用户以考虑相对于地参考时间的板载时间偏移。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号