一个光束方向向量跟踪GNSS软件定义接收器,用于稳健的定位
Scott Burchfield1, Charles Givhan2, Scott Martin2
1Integrated Solutions for Systems (IS4S), Auburn, AL 36830, USA.
Sensors (Basel, Switzerland)
|April 28, 2025
概括
这项研究引入了一个新的全球导航卫星系统 (GNSS) 接收器,它结合了矢量跟踪循环和光束方向. 这种先进的GNSS接收器在具有挑战性的环境中改善了定位和信号跟踪.
科学领域:
- 导航系统 导航系统
- 信号处理 信号处理
- 天线理论天线理论
背景情况:
- 全球导航卫星系统 (GNSS) 对动态平台至关重要,但易受干扰,信号阻塞和多路径效应的影响.
- 矢量跟踪循环和受控接收模式天线 (CRPA) 在降低信号条件下提供了增强的弹性.
- 现有的GNSS接收器在动态和多路径丰富的环境中扎着性能退化.
研究的目的:
- 开发和评估一种新的软件定义无线电 (SDR) 接收器,将矢量跟踪循环与相位天线阵列集成在一起,用于数字束方向.
- 为了减轻信号退化和多路径干扰对GNSS定位和跟踪的不利影响.
- 在具有挑战性的动态场景中增强GNSS接收器的稳定性和持续运行.
主要方法:
- 为软件定义无线电 (SDR) 平台实现算法.
- 矢量跟踪循环与相位天线阵列的集成,用于自适应光束转向.
- 在多路径丰富的环境中使用实时天空数据测试拟议的接收器,并与传统和商业接收器进行性能比较.
主要成果:
- 光束方向接收器显示预期的信号放大.
- 在定位和信号跟踪准确性方面,带有光束定向的矢量跟踪显著超过了传统的标尺接收器和商业接收器.
- 拟议的接收器在商业接收器无法追踪退化信号的环境中保持连续测量.
结论:
- 矢量跟踪循环和数字光束转向的组合提供了一个强大的解决方案,用于在具有挑战性的环境中提高GNSS性能.
- 这种综合方法增强了对干扰,多路径和信号退化的弹性,从而实现了卓越的定位和跟踪.
- 开发的SDR接收器为在不利条件下运行的动态平台提供了与传统GNSS接收器相比的显著进步.
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