动力翼伞系统空投风场的辨识方法

Powered parafoil system's air-drop wind field identification method

Abstract

本发明提出了一种动力翼伞系统空投风场的辨识方法,能够在动力翼伞系统的飞行过程中动态辨识所处风场的风速和风向,为动力翼伞系统的轨迹控制和雀降操作提供必要的参考信息。风场辨识过程分为三步。第一步,通过GPS定位模块获得动力翼伞系统的位置信息,根据动力翼伞系统的位置变化计算动力翼伞系统飞行速度的大小和方向。第二步,利用卡尔曼滤波算法对动力翼伞系统的飞行速度进行滤波处理,获得准确的速度信息。第三步,引入递推最小二乘法在线更新风场辨识结果。
The invention provides a powered parafoil system's air-drop wind field identification method which can dynamically identify the wind speed and wind direction of a wind field that a powered parafoil system flies across so as to provide necessary information for reference to control the trajectory of the parafoil system and the operations for flared landing. The identification process for a wind field is divided into three steps. Firstly, through a GPS module, the positions concerned information of the powered parfoil system can be obtained. Based on the change in the positions of the powered parafoil system, the flying speed and the direction of the powered parafoil system can be calculated. Secondly, the Kalman filtering algorithm is adopted to have the flying speed of the powered parafoil system undergo a filtering process so as to get accurate speed concerned information. Thirdly, the recursive least square algorithm is introduced to online update the identification results of the wind field.

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