Freehand sketching is the quickest way to capture initial design ideas on paper before they are forgotten, often done without rulers or templates. Annotation can be added to sketches to show key parts ...
Abstract: This paper introduces a first-order method for solving optimal powered descent guidance (PDG) problems, that directly handles the nonconvex constraints associated with the maximum and ...
Abstract: Space situational awareness (SSA) is a critical issue of space security. The SSA of 3-D information on flying space targets has been operated by inverse synthetic aperture radar (ISAR) and ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results