Adjustment Method of “FAST” Active Reflector Based on Optimal Fitting Strategy

The adjustment method of the fast active reflector “Chinese heavenly eye” is studied. Firstly, this paper studies offset characteristics main cable node position, combined with position celestial body to be measured, follow-up coordinate system established, and optimal fitting model based on discrete established by using idea ideal surface. Secondly, genetic algorithm used solve minimum root mean square error (RMSE). triangular driven node, so that working area closer paraboloid, maximum electromagnetic wave signal receiving ratio achieved. Finally, rotate data each according known angle use Lagrange operator obtain shortest distance from actual point paraboloid as objective function, radial expansion range actuator variation between adjacent points constraints, size contact basis for judging amount information, a displacement strategy nodes established. Through test, concluded ideal, can accurately under constraint conditions. conclusion obtained, constraints verified.