• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Adaptive Correlation Space Adjusted Open-Loop Tracking Approach for Vehicle Positioning with Global Navigation Satellite System in Urban Areas
【2h】

Adaptive Correlation Space Adjusted Open-Loop Tracking Approach for Vehicle Positioning with Global Navigation Satellite System in Urban Areas

机译：全球导航卫星系统在车辆定位中的自适应相关空间调整开环跟踪方法

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

For vehicle positioning with Global Navigation Satellite System (GNSS) in urban areas, open-loop tracking shows better performance because of its high sensitivity and superior robustness against multipath. However, no previous study has focused on the effects of the code search grid size on the code phase measurement accuracy of open-loop tracking. Traditional open-loop tracking methods are performed by the batch correlators with fixed correlation space. The code search grid size, which is the correlation space, is a constant empirical value and the code phase measuring accuracy will be largely degraded due to the improper grid size, especially when the signal carrier-to-noise density ratio (C/N0) varies. In this study, the Adaptive Correlation Space Adjusted Open-Loop Tracking Approach (ACSA-OLTA) is proposed to improve the code phase measurement dependent pseudo range accuracy. In ACSA-OLTA, the correlation space is adjusted according to the signal C/N0. The novel Equivalent Weighted Pseudo Range Error (EWPRE) is raised to obtain the optimal code search grid sizes for different C/N0. The code phase measuring errors of different measurement calculation methods are analyzed for the first time. The measurement calculation strategy of ACSA-OLTA is derived from the analysis to further improve the accuracy but reduce the correlator consumption. Performance simulation and real tests confirm that the pseudo range and positioning accuracy of ASCA-OLTA are better than the traditional open-loop tracking methods in the usual scenarios of urban area.
机译：对于在城市地区使用全球导航卫星系统（GNSS）进行的车辆定位，开环跟踪具有较高的灵敏度和出色的抗多径性，因此显示出更好的性能。但是，以前没有研究集中在代码搜索网格大小对开环跟踪的代码相位测量精度的影响上。传统的开环跟踪方法是由具有固定相关空间的批处理相关器执行的。代码搜索网格大小（即相关空间）是一个恒定的经验值，并且由于网格大小不合适，代码相位测量精度将大大降低，尤其是当信号载噪比（C / N0）时不同。在这项研究中，提出了一种自适应相关空间调整开环跟踪方法（ACSA-OLTA），以提高码相位测量相关的伪距精度。在ACSA-OLTA中，根据信号C / N0调整相关空间。提出了新颖的等效加权伪距误差（EWPRE），以获得针对不同C / N0的最佳代码搜索网格大小。首次分析了不同测量计算方法的码相测量误差。通过分析得出ACSA-OLTA的测量计算策略，以进一步提高精度，但减少相关器消耗。性能仿真和实际测试证实，在城市通常情况下，ASCA-OLTA的伪距和定位精度优于传统的开环跟踪方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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