To test the ability of the Infrared-Optical Telescope Array (IOTA) to 'map' complex objects, the IOTA project team plans to make 'ground-truth' observations of man-made objects in space. However, not all satellites and rocket bodies are suitable since there will be instrumental limitations on the brightness, angular size, angular speed, and the apparent structural complexity of the observed object. More than 200 objects with the requisite characteristics are identified. The GPS satellites, in particular, offer some interesting possibilities for instrumental testing and 'mapping'.
David M. Gibson,
"Artificial satellites as ground-truth objects for IOTA", Proc. SPIE 1237, Amplitude and Intensity Spatial Interferometry, (1 August 1990); doi: 10.1117/12.19291; https://doi.org/10.1117/12.19291