Department of Navigation and Positioning, Finnish Geodetic Institute, P.O. Box 15 02431 Masala, Finland.
Sensors (Basel). 2010;10(7):7057-66. doi: 10.3390/s100707057. Epub 2010 Jul 23.
Recent advances in nonlinear fiber optics and compact pulsed lasers have resulted in creation of broadband directional light sources. These supercontinuum laser sources produce directional broadband light using cascaded nonlinear optical interactions in an optical fibre framework. This system is used to simultaneously measure distance and reflectance to demonstrate a technique capable of distinguishing between a vegetation target and inorganic material using the Normalized Difference Vegetation Index (NDVI) parameters, while the range can be obtained from the waveform of the echoes. A two-channel, spectral range-finding system based on a supercontinuum laser source was used to determine its potential application of distinguishing the NDVI for Norway spruce, a coniferous tree, and its three-dimensional parameters at 600 nm and 800 nm. A prototype system was built using commercial components.
近年来，非线性光纤和紧凑型脉冲激光器的发展使得宽带定向光源的产生成为可能。这些超连续激光源通过光纤框架中的级联非线性光学相互作用产生定向宽带光。该系统用于同时测量距离和反射率，以展示一种使用归一化差异植被指数 (NDVI) 参数区分植被目标和无机材料的技术，而范围可以从回波的波形中获得。一个基于超连续激光源的双通道、光谱测距系统被用来确定它在区分挪威云杉（一种针叶树）及其在 600nm 和 800nm 处的三维参数的 NDVI 方面的潜在应用。一个使用商业组件构建的原型系统。
