...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Geodesy >Rapid initialization of real-time PPP by resolving undifferenced GPS and GLONASS ambiguities simultaneously
【24h】

Rapid initialization of real-time PPP by resolving undifferenced GPS and GLONASS ambiguities simultaneously

机译：通过同时解决无差异的GPS和GLONASS歧义来快速初始化实时PPP

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

Rapid initialization of real-time precise point positioning (PPP) has constantly been a difficult problem. Recent efforts through multi-GNSS and multi-frequency data, though beneficial indeed, have not proved sufficiently effective in reducing the initialization periods to far less than 10 min. Though this goal can be easily reached by introducing ionosphere corrections as accurate as a few centimeters, a dense reference network is required which is impractical for wi de-area applications. Leveraging the latest development of GLONASS PPP ambiguity resolution (PPP-AR) technique, we propose a composite strategy, where simultaneous GPS and GLONASS dual-frequency PPP-AR is carried out, and herein, the reliability of partial AR improves dramatically. We used 14 days of data from a German network and divided them into hourly data to test this strategy. We found that the initialization periods were shortened drastically from over 25 min when only GPS data were processed to about 6 min when GPS and GLONASS PPP-AR were accomplished simultaneously. More encouragingly, over 50% of real-time PPP solutions could be initialized successfully within 5 min through our strategy, in contrast to only 4% when only GPS data were used. We expect that our strategy can provide a promising route to overcoming the difficulty of achieving PPP initializations within a few minutes.
机译：实时精确点定位（PPP）的快速初始化一直是一个难题。尽管通过多GNSS和多频率数据进行的最新工作尽管确实是有益的，但在将初始化周期缩短到远远少于10分钟的过程中并未证明足够有效。尽管通过引入精确到几厘米的电离层校正可以轻松实现此目标，但仍需要一个密集的参考网络，这对于大面积应用是不切实际的。利用最新的GLONASS PPP模糊度解析（PPP-AR）技术，我们提出了一种复合策略，其中同时进行GPS和GLONASS双频PPP-AR，从而部分AR的可靠性大大提高。我们使用了来自德国网络的14天数据，并将其分为每小时数据以测试该策略。我们发现，初始化时间从原来仅处理GPS数据的25分钟以上大大缩短到了同时完成GPS和GLONASS PPP-AR的6分钟左右。更令人鼓舞的是，通过我们的策略，可以在5分钟内成功初始化超过50％的实时PPP解决方案，而仅使用GPS数据时，只有4％的实时PPP解决方案可以成功初始化。我们希望我们的策略可以为克服几分钟内实现PPP初始化的困难提供一条有希望的途径。

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