AI 中文总结
该研究以卫星与无人机为参照，评估HAPS的19项功能飞行验证情况，明确其核心优势为近距离持续运行，提出其可作为多层非地面网络的持续区域层级，为高海拔经济发展提供支撑。
AI 中文摘要
高海拔平台站（High-Altitude Platform Stations，HAPS）运行在17-27公里的低平流层，处于卫星与无人机（Unmanned Aerial Vehicles，UAVs）之间。对于这一第三层级，其架构论证长期领先于飞行验证，但2020-2026年的一波平流层飞行活动如今允许开展直接对比。我们以已投入运行的卫星与无人机系统为参照，从感知、导航、通信三个维度对HAPS的各项功能逐一评估。我们制定了严格的验证规则：仅当某功能基于18公里及以上高度、与运行相关的平流层数据回传时，才算完成飞行验证，并将该规则应用于19项功能。最终统计结果低于文献所暗示的水平：5项功能已获得可信验证，分别是光学地球观测、高光谱成像、甲烷成像、射频/信号情报（RF/SIGINT）、宽带中继，但这些功能仅依托4个飞行项目，其中最多仅有1个项目有同行评审的飞行证据支持；1项功能仅完成地面演示，2项为部分演示，3项处于概念阶段，8项尚未开展飞行试验。由平台稳定性与载荷可操作性构成的运行包络所界定的4个工程领域（尺寸、重量与功率；位置保持；孔径；观测几何）解释了上述格局。HAPS的核心优势是近距离持续运行，而非高空。基于同传感器的前向模拟，8个用例将该格局转化为具体任务，其中韧性公共安全关键任务（MCX）为核心。基于上述证据，HAPS可作为多层非地面网络中的持续区域层级，也是新兴高海拔经济的雏形。运营商级服务、位置保持精度、监管仍是主要未解决问题，我们将这一持续层级定位解读为一项可检验的假设，设定了2030年的时间节点。
英文摘要
High-Altitude Platform Stations (HAPS) operate in the lower stratosphere at 17-27 km, between satellites and Unmanned Aerial Vehicles (UAVs). For this third tier the architectural case has long outpaced the flight evidence, but a wave of 2020-2026 stratospheric flights now permits a direct comparison. We evaluate HAPS function by function across sensing, navigation, and communication, taking operational satellite and UAV implementations as the reference. We define a strict evidence rule, counting a function as flight-validated only on operationally relevant stratospheric data return at or above 18 km, and apply it to nineteen functions. The resulting count is lower than the literature implies: five functions have credibly crossed over (optical Earth observation, hyperspectral imaging, methane imaging, RF/SIGINT, and broadband relay), yet these rest on only four flight programs, with at most one carrying peer-reviewed flight evidence. One function is ground-demonstrated, two are partially demonstrated, three are conceptual, and eight remain unflown. Four engineering domains (size, weight, and power; station-keeping; aperture; and viewing geometry), bounded by an operational envelope of platform stability and payload operability, explain the pattern. The governing advantage is persistence at close range, not altitude. Eight use cases, supported by same-sensor forward simulations, translate the pattern into missions, led by resilient public-safety mission-critical services (MCX). On this evidence, HAPS fits as a persistent regional tier in a multi-tier non-terrestrial network and as the seed of an emerging High Altitude Economy. Carrier-grade service, station-keeping precision, and regulation remain the principal open problems, and we pose the persistent-tier reading as a testable hypothesis with dated 2030 markers.
