John R. Henderson

TL;DR: In this paper, the ground-based controller determines when the target objects of interest will be near enough to a satellite for that satellite to collect an image of the target object based on an initial orbital model for the targets.

TL;DR: In this article, a wave-optics based simulation code written to model a complete free space laser communications link, including a detailed model of an adaptive optics compensation system, is presented, where the phase of a communications laser beam is corrected, after it propagates through a turbulent atmosphere.

TL;DR: Landsat 5 data on the 1998 Indian and Pakistani tests are used here to demonstrate that there are detectable changes in surface features which might be used to localize an underground nuclear test and to develop change detection techniques specific to the use of satellite data to support a CTBT on-site inspection.

TL;DR: In this paper, the authors explore a new paradigm for improving satellite conjunction analysis by obtaining more precise orbital information only for those objects that pose a collision risk greater than a defined threshold to a specific set of satellites during a specified time interval.

TL;DR: In this paper, a space object modeling system that models the evolution of space debris is provided, which simulates interaction of space objects at simulation times throughout a simulation period, including a propagator that calculates the position of each object at each simulation time based on orbital parameters.