Photogrammetric Measurements of the Wind Velocity over the Straits of Akashi

Abstract

Report of a test on photogrammetric measurements of the wind velocity at several altitudes over the Straits of Akashi to determine the local of changes wind is described.
Photographs are taken by simultaneous photographing the fireworks, provided parachutes, with two phototheodolites placed at the stations on the base line, at night.
Stereophotographs are measured with the first order stereoplotter.