Abstract：In order to solve the defect within traditional airspeed measurement method adopted by helicopter air data system, this paper presents a scheme of airspeed measurement system based on optical and a rapid inversion method of airspeed vector with other airdata. An optical airspeed measurement system is designed based on this method. According to the principle of Mie scattering of aerosol and Doppler effect, the sensor, demodulator and high-speed signal acquisition and processing scheme is optimized in the system. The performance of the system was verified by computer simulation, in which the maximum forward detectable airspeed of the system can reach 450 km/h, and the detection accuracy of true airspeed can be better than ±1 km/h. The optical airspeed measurement system prototype is tested on ground vehicle to compare with the traditional airspeed measurement system, and the effectiveness and reliability of the proposed method and the optical airspeed measurement system are verified.
龙彦志, 梁应剑, 黄巧平, 孙筱逸, 吴梅. 基于多普勒频移的光学大气测速系统设计[J]. 北京航空航天大学学报, 2018, 44(12): 2521-2527.
LONG Yanzhi, LIANG Yingjian, HUANG Qiaoping, SUN Xiaoyi, WU Mei. Design of optical airspeed measurement system based on Doppler shift. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2018, 44(12): 2521-2527.
[1] 熊亮,刘义明,黄巧平.武装直升机大气数据传感器技术研究进展[J].传感器与微系统,2015,34(2):5-8.XIONG L,LIU Y M,HUANG Q P.Research progress in air data sensor technology for attack helicopter[J].Transducer and Microsystem Technologies,2015,34(2):5-8(in Chinese).
[2] COYLE S.The art and science of flying helicopters[M].Ames:Iowa State University Press,1992.
[3] 梁应剑,梅运桥,程丽媛,等.基于米散射的光学大气数据系统研究[J].测控技术,2015,34(1):32-34.LIANG Y J,MEI Y Q,CHENG L Y,et al.Research on optical air data system based on Mie scattering[J].Measurement & Control Technology,2015,34(1):32-34(in Chinese).
[4] SONNENSCHEIN C M,HORRIGAN F A.Signal-to-noise relationships for coaxial systems that heterodyne backscatter from the atmosphere[J].Applied Optics,1971,10(7):1600-1604.
[5] MUÑIOZ R M,MOCKER H W,KOEHLER L.Airborne laser Doppler velocimeter[J].Applied Optics,1974,13(12):2890-2898.
[6] ROGERS P L.Compact radiation fringe velocimeter for measuring in three dimensions:US4506979 A[P].1985-03-26.
[7] KATSIBAS T,SEMERTZIDIS T,LACONDEMINE X,et al.Signal processing for a laser based air data system in commercial aircrafts[C]//16th European Signal Processing Conference.Piscataway,NJ:IEEE Press,2008:1-5.
[8] VERBEEK M J,JENTINK H W.Optical air data system flight testing:NLR-TP-2012-068[R].Amsterdam:National Aerospace Laboratory NLR,2012.
[9] CÉZARD N,BESSON C,DOLFI-BOUTEYRE A.Airflow characterization by Rayleigh-Mie lidars[J].AerospaceLab,2009,1(1):1-4.
[10] SPULER S M,RICHTER D,SPOWART M P,et al.Optical fiber-based laser remote sensor for airborne measurement of wind velocity and turbulence[J].Applied Optics,2011,50(6):842-851.
[11] SPULER S,SPOWART M,RICHTER D.Development and application of an optical fiber-based laser remote sensor for airborne measurement of wind velocity[C]//26th International Laser Radar Conference (ILRC26),2012:1-4.
[12] AUGERE B,BESSON B,FLEURY D,et al.1.5μm lidar anemometer for true air speed,angle of sideslip,and angle of attack measurements on-board Piaggio P180 aircraft[J].Measurement Science & Technology,2016,27(5):054002.
[13] MOORMANR W.Life saver[J].Vertiflite,2012,58(6):18-23.
[14] 刘影碧,谭向军.直升机三轴全向大气数据系统试飞的算法修正[J].航空与航天,2000(3):18-22.LIU Y B,TAN X J.Algorithm correction of helicopter three-axis air data system flight-test[J].Avionics and Astronautics,2000(3):18-22(in Chinese).
[15] 王晓维,梁应剑,李翔,等.基于光学多普勒频移的低空速测量方法研究[J].激光技术,2016,40(5):629-632.WANG X W,LIANG Y J,LI X,et al.Research of low-airspeed measurement based on optical Doppler frequency shift[J].Laser Technology,2016,40(5):629-632(in Chinese).
2018, Vol. 44 
