[1] [1] ZHANG L. Developing trend and key techniques of unmanned aircraft vehicles (UAVs) in foreign countries［J］. Telecommunication Engineering, 2009, 49(7): 88-92(in Chinese).

[2] [2] OFFICER OF THE SECRETARY OF DEFENSE. Unmanned systems integrated roadmap FY2011-2036［M］. Washington DC, USA: Se-cretary of Defense, 2011:52-57.

[3] [3] CHEN L. Development and trend of military UAV technology［J］. Aeronautical Science & Technology, 2013(2): 11-14(in Chinese).

[4] [4] GREENWOOD W W, LYNCH J P, ZEKKOS D. Applications of UAVS in civil infrastructure［J］. Journal of Infrastructure Systems, 2019, 25(2): 04019002.

[5] [5] SEBASTIAN C, FABIO R, MICHAELA D G, et al. Evaluating multispectral images and vegetation indices for precision farming applications from UAV images［J］. Remote Sensing, 2015, 7(4): 4026-4047.

[6] [6] LU Y, MACIAS D, DEAN Z S, et al. A UAV-mounted whole cell biosensor system for environmental monitoring applications［J］. IEEE Transactions on Nanobioscience, 2016, 14(8): 811-817.

[7] [7] DUNCAN K J. Laser based power transmission: Component selection and laser hazard analysis［M］. New York, USA: IEEE, 2016: 100-103.

[8] [8] LI X Y, WU S Ch, LI Zh X. Laser wireless power transmission technology and its development trend［J］. Spacecraft Engineering, 2015, 24(1): 1-7(in Chinese).

[9] [9] LOCKHEED MARTIN AERONAUTICS COMPANY. Lockheed martin performs first ever outdoor flight test of laser powered UAS ［DB/OL］.(2012-08-07) ［2020-02-08］. https://www.edn.com/electronics-products/electronic-product-releases/opto-electronics-products/4391875/Lockheed-Martin-Performs-First-Ever-Outdoor-Flight-Test-Of-Laser-Powered-UAS.

[10] [10] BLACKWELL T. Recent demonstrations of Laser power beaming at DFRC and MSFC［J］. AIP Conference Proceedings, 2005, 766(1): 73-85.

[11] [11] KAWASHIMA N, TAKEDA K, YABE K. Application of the laser energy transmission technology to drive a small airplane［J］. Chinese Optics Letters, 2007, 5(101): 109-110.

[12] [12] KAZUYA T, NOBUKI K, KYOICHI Y. Laser energy transmission to a small-unmanned aerial vehicle［J］. Transactions of the Japan Society for Aeronautical & Space Sciences, 2008, 7: 27-32.

[13] [13] ZHAO Ch M, WANG Y Sh, GUO L D, et al. Development of laser wireless power transmission technology［J］. Laser Technology, 2020, 44(5): 538-545(in Chinese).

[14] [14] SHI Zh L, MENG W W, SHEN J Sh, et al. Tracking design of APT system of laser wireless energy transmission for unmanned aerial vehicle［J］. Laser Technology, 2019, 43(6): 809-814 (in Chinese).

[15] [15] CUI Z H, FU Sh Y, LI Y M, et al. Research on laser tracking system based on 905nm laser［J］. Laser & Infrared, 2010, 40(9): 950-953(in Chinese).

[16] [16] STEINSIEK F. Wireless power transmission experiment as an early contribution to planetary exploration missions［C］// 54th International Astronautical Congress of the International Astronautical Federation. New York, USA: IEEE, 2003: 169-176.

[17] [17] HOWELL J T, O'NEILL M J, FORK R L. Advanced receiver/converter experiments for laser wireless power transmission［C］// Proceedings of the 4th International Conference on Solar Power from Space-SPS. New York, USA: IEEE, 2004: 187-194.

[18] [18] CHEN Q, ZHANG D C, ZHU D D, et al. Design and experiment for realization of laser wireless power transmission for small unmanned aerial vehicles［J］. Proceedings of the SPIE, 2015, 9671: 96710N.

[19] [19] TANG L, ZHONG Y C, ZHANG C X, et al. Research situation and development trend of laser wireless power transmission key technology［J］. Laser Journal, 2017, 38(10): 28-32(in Chinese).

[20] [20] ZHANG Y Ch. Theoretical and experimental research on efficiency improvements of laser cells［D］. Beijing: Beijing Institute of Technology, 2016: 78-94(in Chinese).

[21] [21] WU Zh N. Beam array shaping for high power semiconductor lasers and study on the photoelectric conversion efficiency of GaAs cells［D］. Nanjing: Nanjing University of Aeronautics and Astronautics, 2017: 32-54(in Chinese).

[22] [22] TAN Y, LU J. Study on three-junction GaAs solar cell thermal stress field by continuous wave laser irradiation［J］. Laser Technology, 2020, 44(2): 250-254(in Chinese).