• 航空、航天 •

舰载机进近减速运动及下滑速度的双站测量

郁涛

1. （中国电子科技集团公司 第五十一研究所， 上海 201802）
• 出版日期:2011-03-30 发布日期:2011-03-30

Retarded Motion in Approach and Glide Speed Measurement  with TwoStations for Carrier Aircraft

YU  Tao

1. (The 51th Research Institute of CETC, Shanghai 201802, China)
• Online:2011-03-30 Published:2011-03-30

Abstract: The motion law in approach for carrier aircraft was analyzed by applying Doppler shift. When carrier aircraft is in uniform glide motion, the proportional navigation guidance law can be derived according to the condition that Doppler changing rate tends towards zero. Then, the retarded motion at equal proportion is emphatically researched and the conclusion is obtained that adjacent Doppler changing rate tends to equal. Based on the fact that the approach for carrier aircraft must be practically a retarded motion, this paper presented an engineering solution detecting glide angle and velocity of carrier aircraft in mobile platform. As opposed to the available multistation measurement mode, the analytic equation of velocity vector of carrier aircraft from Doppler shift equation can be directly derived making use of angle transformation introduced by directionfinding although the location parameter is unknown. The analog calculation verifies that the derived formula of velocity vector is errorless. The error analysis shows that the measuring error of velocity vector is less than 0.1 m/s if the rms value of measurement error of the velocity for aircraft carrier is less than 0.1 m/s.