引用本文
  •    [点击复制]
  •    [点击复制]
【打印本页】 【在线阅读全文】【下载PDF全文】 查看/发表评论下载PDF阅读器关闭

←前一篇|后一篇→

过刊浏览    高级检索

本文已被:浏览 39次   下载 16 本文二维码信息
码上扫一扫!
北斗实时精密轨道和钟差产品解算策略及精度评定
王乐,折浩男,王浩浩,燕兴元
0
(长安大学地质工程与测绘学院,西安 710054)
摘要:
随着北斗卫星导航系统全球星座部署即将完成,其应用领域不断扩大,实时精密服务性能受到了极大关注。基于动力学精密定轨方法,设计了北斗卫星实时轨道、钟差算法流程和解算策略。利用不同频点信号,分别计算了BDS-2和BDS-3卫星的实时精密轨道和钟差,建立了完整的轨道和钟差精度评定方法,重点对解算的实时产品的精度进行了评定。结果表明:BDS-2和BDS-3实时精密轨道和钟差产品精度均可满足大部分实时用户的需求。对于B1IB3I频点,BDS-3 MEO卫星的实时轨道精度约为26cm,径向精度约为6cm,实时钟差精度约为0.45ns,且相较于BDS-2,性能更加稳定;对于B1CB2a频点,BDS-3 MEO卫星的实时轨道精度优于20cm,精度和稳定性较高。
关键词:  北斗卫星导航系统  实时  轨道  钟差  精度评定
DOI:
基金项目:国家自然科学基金(41774025,41731066);国家重点研发计划(2018YFC1505100);中央高校基本科研业务费专项(300102260106)
BDS Real-Time Precise Orbit and Clock Offset Products Solution Strategy and Accuracy Evaluation
WANG Le,SHE Hao-nan,WANG Hao-hao,YAN Xing-yuan
(College of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, China)
Abstract:
With the completion of Beidou Navigation Satellite System (BDS) global constellation deployment and the expansion of BDS applications, the real-time high-precision service perfor-mance of BDS has received great attention. Based on the dynamic precise orbit determination method, the real-time orbit and clock offsets algorithm flow and solution strategy of BDS are designed. Using different frequency signals, the real-time precise orbit and clock offsets of BDS-2 and BDS-3 satellites are calculated respectively. A complete evaluation method of orbit and clock offsets accuracy is established, and the accuracy of the real-time products is evaluated. The results show that BDS-2 and BDS-3 satellites real-time high-precision orbit and clock offset products can meet the needs of most real-time users. Using B1IB13 frequency signals, the real-time orbit accuracy of BDS-3 MEO satellites is about 26cm, the accuracy in the radial direction is about 6cm, and the accuracy of clock offsets is about 0.45ns respectively.The performance of BDS-3 is more stable compared with BDS-2. Using B1CB2a frequency signals, the real-time orbit accuracy of BDS-3 MEO satellites is better than 20cm, with higher accuracy and stability.
Key words:  BDS  Real-time  Satellite orbit  Clock offset  Accuracy evaluation

用微信扫一扫

用微信扫一扫