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April 19, 2026Zhongguo kexue. Wulixue Lixue Tianwenxue0 citationsOpen Access

Analytical Modeling of Inter-Satellite Interferometric Laser Link

SHSidi HuKWKaihang WuFGFei Gao

Key Points

  • The aim is to model the signal attenuation in inter-satellite interferometric systems due to various factors affecting performance.
  • Theoretical modeling of inter-satellite laser interferometric systems.
  • Use of link equations to describe optical design and transmission loss.
  • Analysis of beam waist radius and pointing tilt effects on signal-to-noise ratio.
  • Identified optimal beam waist radius for varying degrees of pointing tilt.
  • Quantified the influence of spherical and coma aberrations on signal-to-noise ratio.
  • Revealed key factors affecting link performance in inter-satellite interferometry.

Abstract

星间干涉测量技术是地球重力场测量卫星与太空引力波项目的关键技术之一。星间干涉仪的性能主要受到干涉信号载噪比的影响,与激光链路中的传输损耗相关。本文对星间激光干涉仪进行了理论建模,采用链路方程的形式来描述光学设计、指向倾斜、光场匹配等多种因素所引起的干涉测量信号衰减。基于该链路模型,本文揭示了出射光束腰半径与光束指向倾斜如何共同影响链路载噪比,系统分析了出射光不同程度的指向倾斜情况下,所应选取的束腰半径最优值。同时,基于该模型,本文将光场波前对激光干涉仪的载噪比影响进行了量化分析,指出球差与慧差是造成载噪比下降的关键因素,这将为星间干涉仪的光场参数设计、调装公差分配提供理论依据。

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Cite This Study

Hu et al. (2026) studied this question.

synapsesocial.com/papers/69e473de010ef96374d8f9abhttps://doi.org/10.1360/sspma-2025-0671
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