[1] SHENG S Z, MIAN A A, ZHAO C, et al.. Autonomous takeoff and landing control for a prototype unmanned helicopter ［J］. Control Engineering Practice, 2010, 18(9): 1053-1059.

[2] RAMASAMY S, GARDI A, LIU A, et al.. A laser obstacle detection and avoidance system for manned and unmanned aircraft applications ［C］. 2015 International Conference on Unmanned Aircraft Systems (ICUAS), IEEE, 2015: 526-533.

[3] ZHANG L, YANG Y Y, ZHANG T L, et al.. Research of UAV landing guidance technology based on solar-blind ultraviolet imaging ［J］. Chinese Journal of Lasers, 2016, 43(7): 168-177. (in Chinese)

[4] XU Z Y. Approximate performance analysis of wireless ultraviolet links［C］. IEEE International Conference on Acoustics, Speech and Signal Processing, IEEE, 2007: 577-580.

[5] XU Z Y, CHEN G, ABOU-GALALA F, et al.. Experimental performance evaluation of non-line-of-sight ultraviolet communication systems ［J］. SPIE, 2007, 6709: 67090Y.

[6] CHEN G, ABOU-GALALA F, XU Z Y, et al.. Experimental evaluation of LED-based solar blind NLOS communication links ［J］. Optics Express, 2008, 16(19): 15059-15068.

[7] ZUO Y, XIAO H F, WU J, et al.. Closed-form pathloss model of non-line-of-sight ultraviolet single-scatter propagation ［J］. Optics Letters, 2013, 38(12): 2116-2118.

[8] ZHANG H L, YIN H W, JIA H H, et al.. Study of effects of obstacle on non-line-of-sight ultraviolet communication links ［J］. Optics Express, 2011, 19(22): 21216-21226.

[9] HE H, KE X ZH, ZHAO T F, et al.. Research of position in the wireless “solar-blind” ultraviolet mesh network ［J］. Laser Technology, 2010, 34(5): 607-610. (in Chinese)

[10] ZHAO T F, LIU Y J, WANG X F. Analysis of wireless ultraviolet communication performance in application of helicopter landing assistance ［J］. Laser & Optoelectronics Progress, 2016, 53(6): 93-99. (in Chinese)

[11] XU ZH P, SHEN H H, YAO Y, et al.. Scannerless laser active imaging validating system by directly ranging ［J］. Opt. Precision Eng., 2016, 24(2): 251-259. (in Chinese)

[12] ZHOU J P, CHEN J, LI Y, et al.. Research on target prediction algorithm of shipboard photoelectric tracking equipment ［J］. Opt. Precision Eng., 2017, 25(2): 519-528. (in Chinese)

[13] SONG P, KE X ZH, XIONG Y Y, et al.. Study of ultraviolet pulse broadening in non-line-of-sight communication in noncoplanar geometry ［J］. Acta Optica Sinica, 2016, 36(11): 1106004. (in Chinese)

[14] WANG K, GONG C, ZOU D F, et al.. Demonstration of a 400 kbps real-time non-line-of-sight laser-based ultraviolet communication system over 500 m ［J］. Chinese Optical Letters, 2017, 15(4): 040602.

[15] QIN H, ZUO Y, ZHANG D, et al.. Received response based heuristic LDPC code for short-range non-line-of-sight ultraviolet communication ［J］. Optics Express, 2017, 25(5): 5018-5030.

[16] TANG Y, NI G Q, LAN T, et al.. Simulation and evaluation of transmission distance in solar-blind UV communication systems ［J］. Optical Technique, 2007, 33(1): 27-30. (in Chinese)

[17] CHEN J H, YANG X L. Research of the atmospheric factors of solar blind ultraviolet communication ［J］. Laser Journal, 2008, 29(4): 38-39. (in Chinese)