Voss Kenneth, Chapin Albert
Opt Express. 2005 May 30;13(11):4250-62. doi: 10.1364/opex.13.004250.
We have built a new fisheye camera radiometer to measure the in-water spectral upwelling radiance distribution. This instrument measures the radiance distribution at six wavelengths and obtains a complete suite of measurements (6 spectral data images with associated dark images) in approximately 2 minutes (in clear water). This instrument is much smaller than previous instruments (0.3 m in diameter and 0.3 m long), decreasing the instrument self-shading. It also has improved performance resulting from enhanced sensor sensitivity and a more subtle lens rolloff effect. We describe the instrument, its characterization, and show data examples from both clear and turbid water.
我们构建了一种新型鱼眼相机辐射计，用于测量水中光谱向上辐亮度分布。该仪器可在六个波长下测量辐亮度分布，并在大约2分钟内（在清水中）获得一整套测量数据（6个光谱数据图像及相关暗图像）。该仪器比以前的仪器小得多（直径0.3米，长0.3米），减少了仪器自身的阴影。由于传感器灵敏度提高和透镜滚降效应更细微，其性能也有所提升。我们描述了该仪器及其特性，并展示了来自清水和浑水的数据示例。
