An Application of Photographic Method for the Evaluation Test on Speed Measuring Radiosystem for Ships

Abstract

Since the speed 皿 easuring radiosystem can be used for limited visibility ， it has been adopted widely by shipyards and many evaluation tests of the radiosystems are applied to our laboratory ． ・ The speed data obtained by ． the radiosystems are usually compared with those obtained by the " Mile Post Method " which may be influenced by human factors ． Therefore ， the photographic methods are developed for more objective evaluation tests ．