AUGMENTED POLYNOMIAL GUIDANCE FOR TERMINAL VELOCITY CONSTRAINTS

摘要

This paper deals with an augmented polynomial guidance law to fulfill the terminal velocity requirement of high speed maneuverable reentry vehicle. The guidance command consists of three terms; basis polynomial guidance term, velocity control term, and gravity compensation term. The polynomial guidance can lead the vehicle to the target position in specific direction, and the augmented guidance command can adjust the terminal velocity without disturbing the basis polynomial guidance. The velocity is predicted by internal simulation under non velocity control command condition. The predicted terminal velocity error is fed back to velocity control command. Some computer simulations are conducted to show the performance of the proposed algorithm.