• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Frequency and Time Forum, 2004. EFTF 2004 >Highly-accurate real-time syntonization by use of a single-frequency receiver with GPS carrier phase
【24h】

Highly-accurate real-time syntonization by use of a single-frequency receiver with GPS carrier phase

机译：通过使用具有GPS载波相位的单频接收机进行高精度的实时同步

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The purpose of this paper is to develop a low-cost, highly-accurate and real-time syntonization system composed of a single-frequency receiver with GPS carrier phase. For averaging time of one day under the configuration, our experimental results showed that the accuracy of the steered clock could be improved from about two parts in 109 to about three parts in 1014, and the stability of the syntonized clock could be improved from about nine parts in 1010 to about four parts in 1014. Three improvements and advantages in our methodology were given. First, we developed a forecasting model with recurrent neural networks to correct atmospheric errors in real time. The model was more accurate than the existed ionosphere model and troposphere model for a single-frequency receiver. Furthermore, it was available simply and anticipative day-to-day partially, irrelevant to user locations. Second, the low-cost clock could be automatically steered to obtain the very high frequency accuracy and stability in the short term as well as in the long term. Experimental results showed the stability of per second was about nine parts in 1012. Compared with the commercial GPS Disciplined Oscillator (GPSDO), the short term stability (1s) was improved about ten times. Third, the frequency performance of the syntonization system by use of low-cost GPS engines, inexpensive clocks and less communication effects was as good as the commercial atomic clock. So, the frame of syntonization was sound, reliable and cost-effective.
机译：本文的目的是开发一种低成本，高精度，实时的同步系统，该系统由具有GPS载波相位的单频接收机组成。对于配置下平均一天的时间，我们的实验结果表明，转向时钟的精度可以从10 9 的大约两个部分提高到10 14 的大约三个部分。 sup>，并且可以将同步时钟的稳定性从10 10 的大约9个部分提高到10 14 的大约4个部分。在我们的方法论中给出了三个改进和优点。首先，我们开发了带有递归神经网络的预测模型，以实时校正大气误差。对于单频接收机，该模型比现有的电离层模型和对流层模型更为精确。此外，它每天都可以简单，预期地使用，与用户位置无关。其次，可以自动控制低成本时钟，无论是短期还是长期，都可以获得很高的频率精度和稳定性。实验结果表明，每秒的稳定性在10 12 中约为9个部分。与商用GPS纪律振荡器（GPSDO）相比，短期稳定性（1s）提高了大约十倍。第三，通过使用低成本GPS引擎，便宜的时钟和较少的通信效果，同步系统的频率性能与商业原子钟一样好。因此，同步化的框架是合理，可靠且具有成本效益的。

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