我們發展高光譜儀的關鍵技術，配合高教深根計畫，採用推掃式(pushbroom)的高光譜儀，應用的波段為可見光區域，光學儀器部分的大小110×120×200 mm3，重量為2.5 kg，掃描的波段為可見光，初步測試用的感測器為WATEC 1/2 inch，涵蓋的波長範圍為450-650 nm，波長解析度約為1nm，將來應未來發展需求可選用1 inch以上的感測器，則波長範圍涵蓋為兩倍以上，預計為450-850 nm。為提升大學的研究能量，配合發展高光譜儀的關鍵技術包含：：(1)高光譜資料校正技術、(2)感測器焦平面調焦技術以及(3)高光譜影像資料擷取與處理。太空光學實驗室發展的高光譜資料校正技術，包含高光譜儀的FOV量測、波長的校正技術、CCD響應資料的量測。高光譜影像資料擷取與處理方面，包含資料RGB-composite演算法、影像維度的縮減以及影像的光譜分類。我們也計畫工程體(engineer prototype)先以小型載具進行測試，包含使用輕航機或是無人飛機進行測試，並且將來應用於探空火箭以及立方衛星酬載的科學應用。 ;We will develop the key technology of hyperspectral imager (pushbroom) for visible band application. The specification of hyperspectral imager will be designed as: size 110×120×200 mm3, weight 2.5 kg, scanning wavelength in visible band. The hyperspectral imager sensor will be first adopted as 1/2 inch CCD for testify purpose, which is corresponding to the covering wavelength range between 450 to 650 nm with approximated resolution <1 nm. For future purpose, we will adopt the imager sensor with size larger than 1 inch, which will cover the band between 450-880 nm. To increase the research level and the laboratory capability, we develop the technique know-how of hyperspectral imager: (1) calibration of wavelength and responsibility of hyperspectroal imager. For data analyses, we also develop the technique of RGB-composite algorithm with least square method, reducement of image dimensions, and classify of hyperspectral data. Finally, we will testify the flight test with airborne application and will plan the future application for scientific payload of rocket and CubeSat.
