LIDAR RETURN SIGNALS FOR COAXIAL AND NON-COAXIAL SYSTEMS WITH CENTRAL OBSTRUCTION

被引:68
作者
HARMS, J
机构
[1] Gesellschaft fur Kernenergieverwertung in Schiffbau und Schiffahrt mbH., Institut fur Physik, Gees-thacht
来源
APPLIED OPTICS | 1979年 / 18卷 / 10期
关键词
D O I
10.1364/AO.18.001559
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The return signal of coaxial and noncoaxial lidar systems with central obstruction has been calculated by integration of the irradiance in the focal plane. As in the coaxial unobstructed case, a small detector in the focal plane allows a geometrical compression of the detector signal dynamics. In coaxial systems, the shadow cast by the obstruction results in a reduction of the near signal. In noncoaxial arrangements a signal reduction occurs for distances that depend on the transmitter-receiver separation and the inclination angle, whereas the influence of an obstruction is almost negligible. Adequate signals can be obtained from short to long distances with both types of geometry. © 1979 Optical Society of America.
引用
收藏
页码:1559 / 1566
页数:8
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