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Research on interference avoidance effect of OneWeb satellite constellation's progressive pitch strategy
International Journal of Satellite Communications and Networking ( IF 1.7 ) Pub Date : 2021-03-29 , DOI: 10.1002/sat.1399
Ting Li 1 , Jin Jin 2 , Wei Li 3 , Zixuan Ren 1 , Linling Kuang 2
Affiliation  

Due to the scarcity of spectrum resources, the non-geostationary orbit (NGSO) satellite constellations, which have achieved rapid development in recent years, have to deal with the challenge of spectral coexistence with geostationary orbit (GSO) satellite systems. OneWeb has put forward the “progressive pitch” strategy for GSO networks protection; however, the technical details are not exposed. Herein, we propose a method to obtain the exact progressive pitch parameters suitable for OneWeb system in terms of the technical route of this strategy. Constrained by GSO satellite system's interference protection criterion, an optimization problem is formulated by mathematical modeling of the spectral coexistence scenario between OneWeb system and a GSO satellite system. This optimization problem is resolved by a set of transformations, and the progressive pitch parameters with less loss of the system service capability are obtained. In addition, numerical simulation results verify the effectiveness of the progressive pitch strategy with our obtained parameters for interference avoidance in most parts of the world, but service blind areas of OneWeb system may appear in some time. Finally, we briefly analyze the causes and elimination ways of the blind areas.

中文翻译:

OneWeb卫星星座渐进俯仰策略的干扰规避效果研究

由于频谱资源稀缺,近年来发展迅速的非对地静止轨道(NGSO)卫星星座不得不应对与对地静止轨道(GSO)卫星系统频谱共存的挑战。OneWeb 提出了 GSO 网络保护的“渐进式推销”策略;但是,技术细节并未公开。在此,我们针对该策略的技术路线提出了一种获取适合OneWeb系统的精确渐进音高参数的方法。受GSO卫星系统干扰保护准则的约束,通过OneWeb系统与GSO卫星系统频谱共存场景的数学建模,提出优化问题。这个优化问题是通过一组转换来解决的,得到系统服务能力损失较小的渐进俯仰参数。此外,数值模拟结果验证了渐进俯仰策略在世界大部分地区的干扰规避参数的有效性,但OneWeb系统的服务盲区可能会在一段时间内出现。最后,我们简要分析了盲区产生的原因和消除方法。
更新日期:2021-03-29
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