Abstract:

A simple autonomous guidance scheme is proposed for near-earth low-thrust orbit transfer problem, based on blending the locally optimal laws. First, the locally optimal control laws are derived for each modified equinoctial orbital element. Then, the locally optimal control laws are blended by taking considerations of the efficiency of any attempt to alter an orbital element and the deficits of each element from the final target value, so that only a few guidance parameters are required to be designed.

Key words: near-earth , low-thrust , transfers,  , autonomous , guidance , law,  , locally , optimal , control , law,  , switch , function,  , hybrid , optimization , algorithm