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3D利略参考天线模式空间服务量应用程序的3D天线模式
Francesco Menzione1, Matteo Paonni1
1European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy.
Sensors (Basel, Switzerland)
|April 13, 2024
概括
一个新的统计模型准确地代表了全球导航卫星系统 (GNSS) 太空飞船的天线模式. 该模型增强了航天服务量 (SSV) 中的导航性能评估,特别是在高轨道上.
科学领域:
- 太空工程 太空工程
- 卫星导航系统 卫星导航系统
- 天线理论天线理论
背景情况:
- 太空飞行器需要先进的导航能力,这促使需要将全球导航卫星系统 (GNSS) 扩展到太空服务量 (SSV).
- 精确的星座天线图案,包括侧叶,对于评估高轨道GNSS信号可用性和导航性能至关重要.
- 目前用于定义和与空间用户共享天线模式信息的方法是不够的.
研究的目的:
- 为GNSS星座天线图案提供高保真性,用户友好的统计模型提出一种新的方法.
- 实施和验证这种方法,使用利略参考天线模式 (GRAP) 模型用于利略FOC卫星.
- 分析GRAP模型的数学特性,并证明其在评估利略在SSV中的表现方面的有用性.
主要方法:
- 基于天线表征技术和统计学习的统计模型的开发.
- 来自利略FOC天线表征活动的测量数据的处理.
- 针对分辨率,流性和统计分布准确性的GRAP模型的数学分析.
- 对SSV质量评估的新型"可访问性"指标的定义和应用.
主要成果:
- 成功实施了GRAP模型,代表了利略FOC卫星的等效同流辐射功率 (EIRP) 变化.
- 展示增强的GRAP属性,包括改进的分辨率,流性和统计表示.
- 在初步的利略SSV性能用例中验证GRAP模型的有效性.
- 引入"可访问性"指标,用于简单的SSV质量表示.
结论:
- 拟议的方法为GNSS天线图案提供了一个高保真度,易于使用的统计模型.
- GRAP模型提供了增强的特性,并展示了其应用于其他GNSS星座的潜力.
- 该GRAP模型有效地支持在SSV中评估基于利略的导航,改善未来的航天导航能力.
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