US: Technical report on satellite orbit determination
A technical study from June 1989 details methods for determining orbital paths of sunlit objects detected by overhead platforms. The research focuses on tracking capabilities using non-imaging sensors.
Background
Researchers published an eighty-page technical report in June 1989 addressing the challenge of tracking illuminated satellites and objects from space-based platforms. The document outlines mathematical techniques for calculating orbits when objects reflect sunlight and pass through sensor fields. It specifically examines detection methods employed by high-altitude surveillance systems. While not explicitly mentioning anomalous phenomena, the study provides insight into early capabilities for monitoring objects entering or transiting through Earth's atmosphere from overhead perspectives.