本概念性研究将有效重访周期——即可用观测之间的时间间隔，而非仅名义上的轨道重访周期——视为卫星变化检测的一阶组织变量。该研究不以算法性能评测为焦点，而是通过三种时间观测范式、一个有序的信息深度阶梯（I1–I5）以及GeoAI伦理暴露度，对本领域进行重新诠释。合成分析依托于一组有目的选取的综述文献、运行研究报告、政策文件及官方传感器技术规格。该框架区分了事件对比型、周期语义监测型和事件解析型运行范式，同时将空间粒度建模为调节变量，并将数据缺失与端到端延迟建模为衰减机制。I1–I5定义了从二元变化指示至时间约束型运行告警的五级有序能力层级。重访-伦理共振指数（RERI）被重构为一项透明但未经验证的序数量化复合指标，整合重访/可用性、延迟、自动化程度、可扩展性、地理隐私、滥用风险、问责/监管机制以及溯源/质量等维度；其中理论加权值仅保留在敏感性分析中使用。示例分析表明，模型类别、空间细节与时间范式在分析上彼此独立。因此，本研究提出若干可检验命题：更短的有效重访周期仅在空间粒度、数据可用性、延迟及部署情境共同支持的前提下，方可实现更深层次的时间输出；相应地，治理要求取决于系统配置与预期用途，而不仅取决于重访周期本身。

This conceptual study treats effective revisit cadence—the interval between usable observations rather than nominal orbital revisit alone—as a first-order organizing variable for satellite change detection. Rather than benchmarking algorithms, it reinterprets the field through three temporal observation regimes, an ordered information-depth ladder (I1–I5), and GeoAI ethical exposure. A purposeful anchor sample of reviews, operational studies, policy documents, and official sensor specifications supports the synthesis. The framework distinguishes episodic comparison, periodic semantic monitoring, and event-resolving operational regimes, while modeling spatial granularity as a moderator and data missingness and end-to-end latency as attenuation mechanisms. I1–I5 define ordered capability levels from binary change indication to time-bounded operational alerting. The Revisit-Ethics Resonance Index (RERI) is reformulated as a transparent, non-validated ordinal composite combining revisit/availability, latency, automation, scalability, geo-privacy, misuse, accountability/oversight, and provenance/quality, with theory-weighted values retained only for sensitivity analysis. Worked examples show that model class, spatial detail, and temporal regime are analytically distinct. The study therefore advances testable propositions: shorter effective revisit may enable deeper temporal outputs only when spatial granularity, data availability, latency, and deployment context support them. Governance requirements consequently depend on configuration and intended use rather than revisit interval alone.