| タイトル | Optical technique for measurement of random water wave surfaces |
| 著者（英） | Withers, A. L.; Sorrell, F. Y. |
| 著者所属（英） | North Carolina State Univ. |
| 発行日 | 1976-12-01 |
| 言語 | eng |
| 内容記述 | An optical system using the refraction of a vertical light ray has been developed for measuring the slope of random wind-generated water waves. The basic elements of the system are photovoltaic cells which are connected to individual amplifiers so that when the refracted light beam is incident on a cell, the output of the cell is amplified and then supplied as input to a comparator. The comparator then provides a specified voltage output, independent of the incident light intensity, as long as it is above a designated background value. The comparators are designed to give output voltages comparable with standard TTL. This arrangement provides a high signal from the cell when it experiences incident light, and a low signal when there is only background light, with the high and low signals at TTL voltage levels. |
| NASA分類 | INSTRUMENTATION AND PHOTOGRAPHY |
| レポートNO | 77A16929 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/439762 |
