便携式地面成像光谱辐射计的设计

设计了一种基于棱镜-光栅-棱镜（PGP）的便携式地面成像光谱辐射计。系统的波段范围为可见一近红外，共有344个波段，光谱分辨率优于10nm，空间分辨率优于1mrad。本文以混合像元分解研究为应用背景，阐述了地面成像光谱辐射计的基本原理，分析了系统的主要技术指标，详细论述了系统设计，并对系统进行了相关测试。结果表明，系统具有较高的光谱、空间分辨率及良好的便携性，工作稳定可靠，非常适合在野外环境中应用，从而验证了便携式地面成像光谱辐射计用于混合像元分解研究的可行性。

Design of Compact Field Hyperspectral Imaging Spectrometer

A compact field hyperspectral imaging spectrometer based on a prism-grating-prism structure is presented. The system is designed for the wavelength range from visible light to near infrared. It has 344 spectral bands with the spatial resolution higher than 10 nm and the spectral resolution higher than 1 mrad. To study the unmixing of mixed pixels, the basic principle of the field hyperspectral imaging spectrometer is described, the main specifications of the system is analyzed, the design of the system is discussed in detail and related tests are conducted. The test results show that the system has both higher spatial resolution and higher spectral resolution. Because of its compactness and reliable operation, it is very suitable for field applications. Thus, the feasibility of the use of a compact field hyperspectral imaging spectrometer in the research on the unmixing of mixed pixels is verified.