摘要
近年来各国均开始重视临近空间高超声速飞行器的发展,其中以X-51A和HTV-2高超声速飞行器飞行试验相继成功为代表。本文概述了目前高超声速飞行器跟踪滤波与预报领域存在的难点问题,然后对坐标系进行了定义,并设计了HTV-2(Hypersonic Technology Vehicle-2)质心运动方程及跟踪滤波器,介绍了HTV-2弹道预估原理,最后使用卡尔曼滤波方法进行了仿真计算,并对相关参数的选取进行了分析。仿真结果得出使用卡尔曼滤波算法跟踪滤波效果较好,对工程应用有一定的借鉴意义。
Recently, different countries have made rapid developments in the field of near space hypersonic vehicles. Among which successful hypersonic vehicle flight tests of X-51A and HTV-2 are representative. They often adopt the way of nonballistic maneuver flight with characteristics of high speed and lift-to-drag ratio, flying in atmosphere for a long time, whose motion trajectory is sometimes characterized by ＂hopping＂, which exists the problems of difficulties tracking and prediction. This paper gives the prediction field of hypersonic aircrafts firstly, of nonballistic target acceleration estimation, trajectory overview of existing difficult problems in the tracking filter and aefines coordinate systems, introduces mass center motion e- quation of HTV-2, design of tracking filter and theory of HTV-2 trajectory estimate. At last, uses Kalman filter algorithm to make an estimation of three-axis target position, analyses selection of relevant parame- ters. For HTV-2 target motion trajectory, estimation accuracy of Kalman filter algorithm is within allowed range with Matlab simulation results above, better tracking filter effects have certain reference significance for engineer-ing applications.
出处
《航天控制》
CSCD
北大核心
2015年第2期56-61,69,共7页
Aerospace Control
