公开(公告)号：US3984686A

公开(公告)日：1976-10-05

申请号：US637247

申请日：1975-12-03

申请人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher ,  James W. Bilbro ,  Werner K. Dahm ,  Ronald B. Campbell, Jr. ,  Robert M. Huffaker ,  Harold B. Jeffreys ,  Albert V. Jelalian ,  Wayne H. Keene ,  Michael C. Krause ,  Thomas R. Lawrence ,  Charles M. Sonnenschein ,  David J. Wilson ,  James A. L. Thomson

发明人： James C. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Fletcher ,  James W. Bilbro ,  Werner K. Dahm ,  Ronald B. Campbell, Jr. ,  Robert M. Huffaker ,  Harold B. Jeffreys ,  Albert V. Jelalian ,  Wayne H. Keene ,  Michael C. Krause ,  Thomas R. Lawrence ,  Charles M. Sonnenschein ,  David J. Wilson ,  James A. L. Thomson

IPC分类号： G01P5/26 ,  G01S17/50 ,  G01S17/95 ,  G01B9/02 ,  G01N21/00

CPC分类号： G01P5/26 ,  G01S17/50 ,  G01S17/95

摘要： A system for remotely measuring velocities present in discrete volumes of air in which a CO.sub.2 laser beam is focused by a telescope at such a volume, a focal volume, and within the focusable range, near field, of the telescope. The back scatter, or reflected light, principally from the focal volume, passes back through the telescope and is frequency compared with the original frequency of the laser, and the difference frequency or frequencies represent particle velocities in that focal volume.

摘要翻译： 远程测量存在于离散体积的空气中的速度的系统，其中CO 2激光束由望远镜在望远镜的这种体积，焦点体积和可聚焦范围的近场内聚焦。 主要来自焦点体积的背散射或反射光通过望远镜返回，并且与激光器的原始频率相比频率，而差频率或频率表示该焦点体积中的粒子速度。