An Airborne Spectral Albedometer with Active Horizontal Stabilization
An Airborne Spectral Albedometer with Active Horizontal Stabilization
复制标题
具有主动水平稳定功能的机载光谱反照率计
DOI：
10.1175/1520-0426(2001)018
复制
发表时间：
2001
影响因子：
2.2
通讯作者：
J. Heintzenberg
中科院分区：
文献类型：
--
作者：
M. Wendisch;D. Müller;D. Schell;J. Heintzenberg
摘要 开发了一种机载反照率计，包括低成本、精确且快速的传感器头水平稳定系统，用于测量 400 至 1000 nm 波长之间的光谱向下和向上辐照度。它安装在小型研究飞机（Partenavia P68-B 型）上，但也可以轻松安装在其他飞机上。稳定单元在飞行过程中将反照率计的两个辐射传感器头（向上和向下观察）保持在水平位置，在±6°的俯仰角和横滚角范围内，精度优于±0.2°。该系统可在高达 3° s-1 的角速度下正常工作，水平调整的响应时间为 43 ms。因此，即使在湍流大气条件下也可以应用。稳定的局限性已通过实验室和飞行中的性能测试确定。结果发现，新的水平稳定系统可确保测量辐照度与未对准相关的不确定性......
Abstract An airborne albedometer including a low-cost, precise, and fast sensor head horizontal stabilization system was developed to measure spectral down- and upward irradiances between 400- and 1000-nm wavelength. It is installed on a small research aircraft (type Partenavia P68-B), but it can easily be mounted on other aircraft as well. The stabilization unit keeps the two radiation sensor heads (up- and downward looking) of the albedometer in a horizontal position during the flight with an accuracy of better than ±0.2° over a range of pitch and roll angles of ±6°. The system works properly for angular velocities up to 3° s-1 with a response time of the horizontal adjustment of 43 ms. Thus it can be applied even under turbulent atmospheric conditions. The limitations of the stabilization have been determined by laboratory and in-flight performance tests. As a result it is found that the new horizontal stabilization system ensures that misalignment-related uncertainties of the measured irradiances are ...