地球轨道上的轨道碎片：运行、稳定性、控制和市场形成
Orbital Debris in Earth Orbit: Operations, Stability, Control, and Market Formation
AI总结：
本文通过开发降阶壳层-尺寸框架，将碰撞率缩放、碎片产生增益、自然和受控汇以及轨道驻留时间联系起来，识别出近地轨道可持续性的三个主要控制杠杆，并区分了运行拥挤但动态阻尼的壳层与动态放大的壳层。
摘要：
轨道碎片是一个分层轨道环境中的非线性控制问题，而非静态库存。本文开发了一个降阶的壳层-尺寸框架，将碰撞率缩放、碎片产生增益、自然和受控汇以及轨道驻留时间与干预排序和采购设计联系起来。该公式识别了近期轨道可持续性的三个主要控制杠杆：新航天器的高置信度处置和短失效后驻留时间；高风险交会尾部的减少遭遇面协方差；以及长寿命非活动体的残余危险库存的退役或偏转。源增益/汇稳定裕度将运行拥挤但动态阻尼的壳层与动态放大的壳层区分开来。分析区分了500-600公里附近的交通驱动工作负载峰值与~850公里附近的持久性驱动危险峰值，其中非活动质量和长寿命主导未来的碎片产生。当前的公共统计报告显示，地球轨道上有约44,870个跟踪物体和超过16,200吨材料，模型种群远高于常规编目阈值。由此产生的干预措施包括：快速任务后处置、针对高风险交会的协方差改进、选择性即时碰撞规避或主动移除高危险废弃物体。适当的采购指标不是移除物体的数量，而是时间积分环境危害的验证减少：验证的处置、验证的模糊高风险交会减少、验证的残余危险库存减少。
英文摘要：
Orbital debris is a nonlinear control problem in a stratified orbital environment, not a static inventory. This paper develops a reduced-order shell-and-size framework that connects collision-rate scaling, fragment-production gain, natural and controlled sinks, and orbital residence time to intervention ranking and procurement design. The formulation identifies three dominant control levers for near-term orbital sustainability: high-confidence disposal and short post-failure residence time for new spacecraft; reduced encounter-plane covariance for the high-risk conjunction tail; and retirement or deflection of the residual hazard stock of long-lived inactive bodies. A source-gain/sink stability margin separates shells that are operationally crowded but dynamically damped from shells that are dynamically amplifying. The analysis distinguishes the traffic-driven workload peak near 500--600 km from the persistence-driven hazard peak near $\sim$850 km, where inactive mass and long lifetime dominate future fragment production. Current public statistics report $\sim$44,870 tracked objects and more than 16,200 tonnes of material in Earth orbit, with model populations far larger below routine-catalog thresholds. The resulting intervention stack is rapid post-mission disposal, targeted covariance improvement for high-risk encounters, selective just-in-time collision avoidance or active removal of high-hazard derelicts. The appropriate procurement metric is not the number of objects removed, but verified reduction in time-integrated environmental hazard: verified disposal, verified reduction in ambiguous high-risk conjunctions, verified reduction in residual hazard stock.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
