arXiv:2512.19727cs.LG2025-12被引 2

用LSTM和摩尔定律预测航天器寿命,解决新发射航天器寿命数据低估问题。

Trend Extrapolation for Technology Forecasting: Leveraging LSTM Neural Networks for Trend Analysis of Space Exploration Vessels

  • 结合LSTM与摩尔定律,建模航天器寿命随发射时间变化趋势。
  • 新方法STETI缓解因近期发射航天器未退役导致的寿命数据低估偏差。
  • 适合航天任务规划与科技政策制定者参考,提升技术预测准确性。

空间探索等复杂领域技术进步的预测面临技术、经济与政策因素交织的挑战。传统技术预测依赖增长曲线(如摩尔定律)与时间序列模型进行趋势外推。本文开展更新的系统文献综述,发现机器学习融合模型正成为趋势。基于此,提出一种结合长短期记忆(LSTM)神经网络与摩尔定律增强的预测模型,用于预测航天器运行寿命。寿命是航天器重要工程特征,可作为空间探索技术进步的代理指标。模型以发射日期及额外变量为输入。分析引入了近期提出的起止时间整合(STETI)方法的新进展。该方法解决寿命分析中的关键右截断问题:越近的发射日期,能贡献寿命数据的失败航天器越少,而长寿航天器仍在运行,导致近期寿命估计被系统性低估。STETI通过在发射时间函数与失效时间函数间转换,缓解这一偏差。结果对航天任务规划与政策决策具重要启示。

原文摘要 · Abstract (English)

Forecasting technological advancement in complex domains such as space exploration presents significant challenges due to the intricate interaction of technical, economic, and policy-related factors. The field of technology forecasting has long relied on quantitative trend extrapolation techniques, such as growth curves (e.g., Moore's law) and time series models, to project technological progress. To assess the current state of these methods, we conducted an updated systematic literature review (SLR) that incorporates recent advances. This review highlights a growing trend toward machine learning-based hybrid models. Motivated by this review, we developed a forecasting model that combines long short-term memory (LSTM) neural networks with an augmentation of Moore's law to predict spacecraft lifetimes. Operational lifetime is an important engineering characteristic of spacecraft and a potential proxy for technological progress in space exploration. Lifetimes were modeled as depending on launch date and additional predictors. Our modeling analysis introduces a novel advance in the recently introduced Start Time End Time Integration (STETI) approach. STETI addresses a critical right censoring problem known to bias lifetime analyses: the more recent the launch dates, the shorter the lifetimes of the spacecraft that have failed and can thus contribute lifetime data. Longer-lived spacecraft are still operating and therefore do not contribute data. This systematically distorts putative lifetime versus launch date curves by biasing lifetime estimates for recent launch dates downward. STETI mitigates this distortion by interconverting between expressing lifetimes as functions of launch time and modeling them as functions of failure time. The results provide insights relevant to space mission planning and policy decision-making.

航天器寿命LSTM趋势预测

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