采用两阶段过程,重新采样,决策规则和精细采集,以优化GNSS接收器性能采集阶段
K Bahmani1, M R Mosavi2, A Sdar1
1Department of Electrical Engineering, Iran University of Science and Technology, Narmak, Tehran, 16846-13114, Iran.
Scientific reports
|September 28, 2024
概括
全球导航卫星系统 (GNSS) 软件接收器采集新方法提高了准确率7.275%,速度提高了76.97%. 这种技术可以增强全球定位系统,GLONASS,北斗和利略系统的卫星信号采集,即使在低载波与噪声比的环境中也是如此.
科学领域:
- * 卫星导航系统工程 卫星导航系统工程
- * 用于GNSS接收器的信号处理
背景情况:
- *软件定义的全球导航卫星系统 (GNSS) 接收器对于准确的位置,速度和时间估计至关重要.
- * 采集阶段对于识别卫星和估计多普勒/代码偏移至关重要,这会影响接收器的整体性能.
- * 传统的采集方法面临着速度和准确性之间的权衡,特别是在低载体对噪声比率 (CNR) 条件下.
研究的目的:
- *为GNSS软件接收器提出一种新的获取方法,以提高速度和准确性.
- * 解决在具有挑战性的信号环境中传统和精确的采集技术的局限性.
- *通过确保快速准确的卫星信号数据,改善过渡到追踪阶段.
主要方法:
- *开发一种新的采集技术,将重新采样,两阶段采集和精细采集战略整合起来.
- *在多个GNSS星座中应用和评估拟议的方法,包括全球定位系统 (GPS),GLONASS, BeiDou和利略.
- *与以速度为导向和以准确度为中心的传统采集方法进行比较分析.
主要成果:
- *与传统方法相比,拟议的方法实现了7.275%的精度提升.
- *这项新技术显示,相对于优先考虑精度的方法,速度增加了76.97%.
- * 成功整合概念,以克服获取阶段的速度-精度权衡.
结论:
- * 拟议的综合采集方法为GNSS软件接收器提供了速度和准确性的卓越平衡.
- * 这一进步对于在低CNR环境中提高接收器性能尤其有益.
- * 该方法可更快,更精确地获取卫星信号,提高导航系统的整体效率.
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