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为发射器地理定位任务的卫星星座优化,基于到达角度的技术
Marcello Asciolla1, Rodrigo Blázquez-García2, Angela Cratere1
1Department of Electrical and Information Engineering, Politecnico di Bari, Via Orabona 4, 70126 Bari, Italy.
Sensors (Basel, Switzerland)
|September 19, 2025
概括
这项研究优化了卫星轨道,以使用到达角 (AOA) 测量来精确地确定信号发射器的地理位置. 它最大限度地减少了位置错误,增强了频谱监控和搜索和救援能力.
科学领域:
- 太空科学与工程 太空科学与工程
- 卫星地理定位技术的技术
- 优化理论 优化理论
背景情况:
- 基于地球的信号发射器的精确地理位置对于各种民用和国防应用至关重要.
- 配备到达角 (AOA) 传感器的卫星平台为远程信号检测提供了一个有希望的解决方案.
- 现有的轨道部署策略需要优化,以最大限度地定位精度.
研究的目的:
- 开发一个理论框架,以优化卫星轨道部署,提高地理位置的准确性.
- 为了最大限度地减少信号发射器的位置误差差,使用来自低地球轨道 (LEO) 卫星的AOA测量.
- 建立一种方法来将任务设计要求转化为轨道优化问题.
主要方法:
- 对于任意数量的LEO卫星和目标指向态度,制定一个优化问题.
- 在视线 (LOS) 约束下最小化位置精度稀释 (PDOP) 度量.
- 数字应用证明了第二颗卫星相对于现有的卫星的最佳位置.
主要成果:
- 对模拟结果的分析涉及轨道参数,如真异常和上升节点的右上升.
- 识别影响地理位置准确性的趋势,参数依赖性和对称性属性.
- 验证将任务要求转化为轨道优化的方法.
结论:
- 开发的框架提供了一种可靠的方法,用于优化卫星星座用于地理定位任务.
- 这项研究为轨道参数和地理位置精度的相互作用提供了新的见解.
- 这项研究支持开发具有AOA有效载荷的立方卫星,用于先进的频谱监测和搜索和救援行动.
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