• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International technical meeting of the Satellite Division of the Institute of Navigation >Indoor Multipath Characterization and Separation using Distortions in GPS Receiver Correlation Peaks
【24h】

Indoor Multipath Characterization and Separation using Distortions in GPS Receiver Correlation Peaks

机译：使用GPS接收机相关峰中的失真进行室内多径表征和分离

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

摘要

GNSS range measurements suffer from a variety ofsystematic biases and errors. Most of these errors can beeliminated or reduced by differential positioningtechniques as they are temporally or spatially correlatedbetween the remote and base station receivers. The use ofSatellite Based Augmentation System (SBAS) is alsoproven to improve positioning performance by reducingthese errors in standalone receivers (Misra & Enge 2011).The measurement bias caused by signal multipathbehaves differently because unlike other errors, multipathis normally uncorrelated between antenna locations.Hence, the base and remote receivers experience differentmultipath and as a result differencing between them willnot cancel the errors. As such, multipath remains a majorsource of error in range measurements in both single pointand differential positioning modes, especially in indoorand degraded signal environments.The existing multipath mitigation techniques attempt toeliminate multipath effects on pseudorange measurementaccuracy by tracking the peak of the correlation trianglein Global Positioning System (GPS) receivers. Most ofthese techniques are based on the assumption that theLine-of-Sight (LOS) signal is stronger than the Non-Lineof-Sight (NLOS) signals. However, in the scenarioswhere the LOS signal is weaker than the compositemultipath signal, this approach may result in a bias incode tracking. In this paper, the distortions in the GPSreceiver correlation peak due to multipath are investigatedto understand the effects on code tracking performance. Anovel method is proposed to separate LOS and multipathsignals under such conditions for static and low dynamicreceivers.
机译：GNSS距离测量受到多种因素的影响 系统的偏见和错误。这些错误大多数是 通过差分定位消除或减少 时间或空间相关的技术 在远程和基站接收器之间。指某东西的用途 基于卫星的增强系统（SBAS）也是 事实证明，通过减少 独立接收器中的这些错误（Misra＆Enge 2011）。 信号多径引起的测量偏差 行为有所不同，因为与其他错误不同，多路径 通常在天线位置之间是不相关的。 因此，基础接收器和远程接收器体验不同 多路径，因此它们之间的差异将 不取消错误。因此，多路径仍然是主要的 两个单点范围内测量的误差源 和差分定位模式，尤其是在室内 和恶化的信号环境。 现有的多径缓解技术试图 消除对伪距测量的多径影响 通过跟踪相关三角形的峰值来提高准确性 在全球定位系统（GPS）接收器中。大多数 这些技术基于以下假设： 视线（LOS）信号比非视线（Non-Lineof- 视线（NLOS）信号。但是，在方案中 LOS信号比复合信号弱 多径信号，这种方法可能会导致 代码跟踪。在本文中，GPS中的失真 研究了由于多径引起的接收机相关峰值 了解对代码跟踪性能的影响。一种 提出了一种分离LOS和多径的新方法 在静态和低动态的条件下发出信号 接收者。

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