[1] Hannes H. Uber die eigenschaften des schattenverfahrens [J]. Optik, 1956, 13(1): 34-48.
[2] Schardin H. Die schlierenverfahren und ihre anwendungen [J]. Ergebnisse der Exakten Naturwissen-schaften, 1942, 20: 303-439.
[3] Merzkirch W. Flow Visualization[M]. 2nd ed. New York: Academic Press, 1987.
[4] Knudsen P J T, Svender J. Doppler radar velocity measurement for wound ballistics experiments [J]. Int J Leg Med, 1994, 107: 1-6. doi:  https://doi.org/10.1007/BF01247266
[5] Westerweel J. Fundamentals of digital particle image veloci-metry [J]. Meas Sci Technol, 1997, 8: 1379-1392.
[6] Raffel M. Optische Untersuchungen in Technischen Stromungen Unter Besonderer Berucksichtigung Eines Verfahrens Zur Detection von Dichtegradienten[M]. Germany: Papierflieger, 2001.
[7] Hargather M J, Settles G S. Natural-background-oriented schlieren imaging [J]. Exp Fluids, 2010, 48: 59-68. doi:  10.1007/s00348-009-0709-3
[8] Raffel M, Heineck J, Edward S, et al. Background oriented schlieren imaging for full-scale and in-flight testing [J]. Journal of the American Helicopter Society, 2013, 59(1): 12002. doi:  10.4050/jahs.59.012002
[9] Edward T S, Laura K K, James T H. Measurements of tip vortices from a full-scale UH-60 A rotor by retro-reflective background oriented schlieren and stereo photogrammetry[C]//69th American Helicopter Society Annual Forum, 2013: 20130013745.
[10] Nathanial T S, James T H, Edward T S. Optical flow for flight and wind tunnel background oriented schlieren imaging [C]//55th AIAA Aerospace Sciences Meeting, 2017, 4365: 46-47.
[11] James T H, Daniel W B, Edward T S, et al. Background oriented schlieren (BOS) of a supersonic aircraft in flight[C]//AIAA Flight Testing Conference, 2016, 3356: 1-11.
[12] Kamlet M. NASA captures first air-to-air images of supersonic shockwave interaction in flight[EB/OL]. (2019-03-06)[2021-10-28]. http://www.nasa.gov/centers/armstrong/features/supersonic-shockwave-interaction.html.
[13] Zhang Yue, Su Yun, Gao Peng, et al. Visual monitoring method for atmospheric disturbance of moving objects [J]. Infrared and Laser Engineering, 2020, 49(8): 20190535. (in Chinese) doi:  10.3788/IRLA20190535
[14] Zhang Yue, Wang Xu, Su Yun, et al. High-precision atmos-pheric disturbance detection method for moving objects [J]. Acta Optical Sinica, 2021, 41(2): 0228002. (in Chinese) doi:  10.3788/AOS202141.0228002
[15] Wu Yingchuan. Research on theory and application of computational flow imaging[D]. Nanjing: Nanjing University of Science and Technology, 2010. (in Chinese)