大氣瞬變現象(Atmospheric Transient Phenomena)為大氣層內所發生各種光度的變化，包含閃電(Lightning)、高空短暫發光現象(Transient Luminous Events, TLEs)、大氣輝光(Airglows)與極光(Aurora)等，是太空與大氣物理研究中主要的領域之一。為取得大氣瞬變現象的光變曲線與光譜特性，高靈敏度的快速光度儀是量測大氣瞬變現象不可或缺的工具。由於地面觀測會受限於大氣消光的影響，觀測大氣瞬變現象的首選為衛星遙測。然而過往的光電量測酬載(如ISUAL)大多體積龐大且使用到高壓電，因此本論文欲發展一體積小且低耗能的快速光度儀。
本論文所發展的科學酬載-快速光度儀雛型體(prototype)，已在實驗中驗證能夠精確的量測到微小的亮度變化，快速的響應時間與採樣率可有效的紀錄光度變化的細節，資料擷取儲存系統亦能夠準確的識別事件的發生，並準確擷取事件發生瞬間的資料進行儲存。快速光度儀具有低重量體積小等優點，容易滿足中小型載具的任務需求，且擴充性佳，更換光電倍增管和鏡頭即可滿足其他波段的觀測，提供不同科學目的的使用。

Atmospheric transient phenomena can be defined as all kinds of dynamic luminous events that happen in atmosphere, such as lightning, Transient Luminous Events (TLEs), airglows and aurora, are one of the major topics in space physics and atmospheric physics. To measure the optical characteristic of atmospherics transient phenomena, a sensitive fast speed photometer is necessary. Observations from the ground, airplanes were limited in scope, duration, and especially coverage, therefor a long-term global observation from satellite is the first choice. However, former satellite payloads for photoelectric measurement are mostly huge and heavy, also requiring high voltage. That was a reason for the development of the fast speed photometer that features low energy consumption and simple structure.
The prototype of fast speed photometer has been testified through experiments that is capable to measure details from rapidly varying of brightness. With data identify and saving algorithm, fast speed photometer can identify atmospheric transient phenomena precisely and recording data automatically. Fast speed photometer is light and compact enough to satisfy satellite missions, and with wide response spectrum can easily fulfil different scientific missions.

1. Chen, A. B., Kuo, C.-L., Lee, Y.-J., Su, H.-T., Hsu, R.-R., Chern, J.-L., Frey, H. U., Mende, S. B., Takahashi, Y., Fukunishi, H., Chang, Y.-S., Liu, T.-Y., & Lee, L.-C. (2008). Global distributions and occurrence rates of transient luminous events. Journal of Geophysical Research: Space Physics, 113, A8, 10.1029/2008ja013101
2. Dwyer, J. R., & Uman, M. A. (2014). The physics of lightning. Physics Reports, 534, 147, 10.1016/j.physrep.2013.09.004
3. Franz, R. C., Nemzek, R. J., & Winckler, J. R. (1990). Television Image of a Large Upward Electrical Discharge Above a Thunderstorm System. Science, 249, 48, 10.1126/science.249.4964.48
4. Frey, H. U., Mende, S. B., Cummer, S. A., Chen, A. B., Hsu, R.-R., Su, H.-T., Chang, Y.-S., Adachi, T., Fukunishi, H., and Takahashi, Y. (2005), Beta-type stepped leader of elve-producing lightning, Geophys. Res. Lett., 32, 10.1029/2005GL023080
5. Frey, H. U., Mende, S. B., Cummer, S. A., Li, J., Adachi, T., Fukunishi, H., Takahashi, Y., Chen, A. B., Hsu, R.-R., Su, H.-T., & Chang, Y.-S. (2007). Halos generated by negative cloud-to-ground lightning. Geophysical Research Letters, 34, 10.1029/2007gl030908
6. Frey, H. U., Mende, S. B., Harris, S. E., Heetderks, H., Takahashi, Y., Su, H. ‐T., Hsu, R. ‐R., Chen, A. B., Fukunishi, H., Chang, Y. ‐S., & Lee, L. ‐C. (2016). The Imager for Sprites and Upper Atmospheric Lightning (ISUAL). Journal of Geophysical Research: Space Physics, 121, 8134, 10.1002/2016ja022616
7. Fukunishi, H., Takahashi, Y., Kubota, M., Sakanoi, K., Inan, U. S., & Lyons, W. A. (1996). Elves: Lightning‐induced transient luminous events in the lower ionosphere. Geophysical Research Letters, 23, 2157, 10.1029/96gl01979
8. Huang, T.-Y., Kuo, C. L., Chiang, C. Y., Chen, A. B., Su, H. T., & Hsu, R. R. (2010). Further investigations of lightning-induced transient emissions in the OH airglow layer. Journal of Geophysical Research: Space Physics, 115, 10.1029/2010ja015558
9. Huising, J.H., Operational Amplifiers, Boston: Kluwer Academic Publisher, 2001
10. Hsu, M. L., Lin, C. H., Hsu, R. R., Liu, J. Y., Paxton, L. J., Su, H. T., Tsai, H. F., Rajesh, P. K., & Chen, C. H. (2011). The O I 135.6 nm airglow observations of the midlatitude summer nighttime anomaly by TIMED/GUVI. Journal of Geophysical Research: Space Physics, 116, 10.1029/2010ja016150
11. Inan, U. S., Bell, T. F., & Rodriguez, J. V. (1991). Heating and ionization of the lower ionosphere by lightning. Geophysical Research Letters, 18, 705, 10.1029/91gl00364
12. Kuo, C.-L., Chou, J. K., Tsai, L. Y., Chen, A. B., Su, H. T., Hsu, R. R., Cummer, S. A., Frey, H. U., Mende, S. B., Takahashi, Y., & Lee, L. C. (2009). Discharge processes, electric field, and electron energy in ISUAL-recorded gigantic jets. Journal of Geophysical Research: Space Physics, 114, 10.1029/2008ja013791
13. Liu, N., Pasko, V. P., Frey, H. U., Mende, S. B., Su, H.-T., Chen, A. B., Hsu, R.-R., & Lee, L.-C. (2009). Assessment of sprite initiating electric fields and quenching altitude of a 1Πg state of N2 using sprite streamer modeling and ISUAL spectrophotometric measurements. Journal of Geophysical Research: Space Physics, 114, 10.1029/2008ja013735
14. Meier, R. R. (1991). Ultraviolet spectroscopy and remote sensing of the upper atmosphere. Space Science Reviews, 58, 10.1007/bf01206000
15. Mende, S. B., Frey, H. U., Hsu, R. R., Su, H. T., Chen, A. B., Lee, L. C., Sentman, D. D., Takahashi, Y., & Fukunishi, H. (2005). Dregion ionization by lightning-induced electromagnetic pulses.Journal of Geophysical Research, 110, 10.1029/2005ja011064
16. Omholt, A., The Optical Aurora, Physics and Chemistry in Space, 4. Berlin, Heidelberg: Springer, 1971
17. Pasko, V. P., Inan, U. S., Bell, T. F., & Taranenko, Y. N. (1997). Sprites produced by quasi-electrostatic heating and ionization in the lower ionosphere. Journal of Geophysical Research: Space Physics, 102, 4529, 10.1029/96ja03528
18. Pasko, V. P. (2003). Electric jets. Nature, 423, 927, 10.1038/423927a
19. Sentman, D. D., Wescott, E. M., Osborne, D. L., Hampton, D. L., & Heavner, M. J. (1995). Preliminary results from the Sprites94 Aircraft Campaign: 1. Red sprites. Geophysical Research Letters, 22, 1205, 10.1029/95gl00583
20. Su, H.-T. (2002). Observation of sprites over the Asian continent and over oceans around Taiwan. Geophysical Research Letters, 29, 10.1029/2001gl013737.
21. Uman, M. A., The Lightning Discharge, Academic Press, London, 1987
22. Walker, T. D., & Christian, H. J. (2017). Triggered lightning spectroscopy: Part 1. A qualitative analysis. Journal of Geophysical Research: Atmospheres, 122, 8000, 10.1002/2016jd026419
23. Wautelet, G., Hubert, B., Gérard, J. ‐C., & Immel, T. J. (2019). The OI‐135.6 nm Nighttime Emission in ICON‐FUV Images: A New Tool for the Observation of Classical Medium‐Scale Traveling Ionospheric Disturbances? Journal of Geophysical Research: Space Physics, 124, 7670, 10.1029/2019ja026930
24. Ziegler, C. L., MacGorman, D. R., Dye, J. E., & Ray, P. S. (1991). A model evaluation of noninductive graupel-ice charging in the early electrification of a mountain thunderstorm. Journal of Geophysical Research, 96, 12833, 10.1029/91jd01246
25. 許瑞榮，蘇漢宗，陳炳志，陳志隆，李羅權，高空大氣閃電影像儀，物理雙月刊，廿八卷六期，2006
26. 吳彥蓉，聖嬰現象對高空短暫發光現象(淘氣精靈)與閃電活動之影響。國立成功大學太空與電漿科學研究所碩士論文，2010