Scanning lidar with a coupled radar safety system.
Scanning lidar with a coupled radar safety system.
复制标题
带有耦合雷达安全系统的扫描激光雷达。
DOI：
10.1364/ao.38.006383
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发表时间：
1999
期刊：
影响因子：
1.9
通讯作者：
G. M. Hansen
中科院分区：
文献类型：
--
作者：
G. Kent;G. M. Hansen
自1992年以来，位于弗吉尼亚州汉普顿的美国航天局兰利研究中心的一个小型扫描三波长激光雷达系统一直用于对平流层和对流层上部浮质以及飞机排气羽流的演变进行大气测量。许多测量都是在远离天顶的地方进行的，为了减少激光束对空中交通造成的危险，还安装了雷达安全装置。雷达应用的独创性在于，通过使用透射激光辐射并反射微波的二向色镜使雷达射束与激光射束共线。该反射镜在来自雷达和激光器的辐射通过独立扫描单元之前插入到出射光路中。对整个系统的测试表明，激光雷达和雷达波束在扫描时保持并置，并且雷达可用于在飞机通过波束之前抑制激光。
A small scanning three-wavelength lidar system at NASA Langley Research Center in Hampton, Virginia, has been used since 1992 to make atmospheric measurements on stratospheric and upper tropospheric aerosols and on the evolution of aircraft exhaust plumes. Many of these measurements have been made away from the zenith, and, to reduce the hazard to air traffic produced by the laser beam, a radar safety device has been installed. The radar application is original in that the radar beam is made collinear with the laser beam by use of a dichroic mirror that transmits the laser radiation and reflects the microwaves. This mirror is inserted into the outgoing optical path prior to the radiation from both the radar and the laser passing through the independent scanning unit. Tests of the complete system show that the lidar and radar beams remain collocated as they are scanned and that the radar can be used to inhibit the laser prior to an aircraft passing through the beam.