中文摘要：

研究了1种适用于翼伞系统自主归航过程中的在线风场辨识模型.针对翼伞系统归航过程中容易受到周围风场干扰,实现精确自主归航需要辨识出周围风场信息的问题,根据翼伞系统飞行轨迹变化特征,建立了1种在线风场辨识的模型.模型分为转弯飞行和直线飞行风场辨识2个部分,采用风速矢量3角形及曲线拟合等方法实现实际平均风场识别.对模型的应用条件和性能特征作了分析.数据仿真结果表明,该模型能够正确识别出预定风场信息,证明了模型的正确性和有效性,为翼伞系统实现在线轨迹规划提供了风场信息前提.

英文摘要：

An online identification model of wind field for autonomous homing of parafoil systems is studied. With the consideration that the parafoil system is more susceptible to the wind field, and the information of ambient wind field needs to be identified to achieve precise homing, a wind field online identification model is established according to the characteristics of the flight trajectory of parafoil system. The identification model consists of two parts： turn flight and straight flight, and the actual average wind field is identified through the method of curve fitting and the velocity vector triangle. Then, the application conditions and performance characteristics of the model are analyzed. Simulation results demonstrate that the proposed model can accurately identify the wind field, which verifies the correctness and practicability of the model, and the wind field information can be provided in advance for online trajectory planning of parafoil system.