Navigation Templates for PSA

Navigation Templates (NaTs) provide a method for constructing highly flexible navigation plans which capture the essence of the navigation situation (i.e., the task and relevant environmental constraints). This paper presents NaTs as applied to a dimensional simulator of NASA’s Personal Satellite Assistant the PSA. The specifics of this application required that the basic NaT algorithm be supplemented with certain memory additions in order to function reliably with the narrow beam range sensors with which the PSA simulator is equipped. These modifications and the results are presented.