一种从自由飞行实验中提取空气动力系数的新方法

该文提出从飞行体自由飞行试验中提取空气动力系数的新方法－－Ｍａｒｑｕａｒｄｔ改进法。Ｍａｒｑｕａｒｄｔ法综合了Ｃｈａｐｍａｎｎ－Ｋｉｒｋ渚最速下降法的优点而避开了它们的缺点，是一种比较好的数据处理方法。Ｍａｎｑｕａｒｄｔ改进法既继承了Ｍａｒｑｕａｒｄｔ法的优点，又大大地减少了计算工作量，是一种收敛快的迭代算法，最后，给出了在靶道实验数据处理中的计算实例。

A New Algorithm for Extracting Aerodynamic Coefficients from Free flight Data

This paper proposes a new algorithm for extracting aerodynamic coefficients from free flight data:improved Marquardt algorithm. Marquardt algorithm is a rather good data reduction algorithm. It combines the advantages of Chapmann Kirk algorithm and the steepest descent algorithm, and avoids their defects. The improved Marquardt algorithm not only inherits the advantages of Marquardt algorithm, but also much more decreases the computation time .It is a quicker convergence interation algorithm than Marquardt algorithm. The application of this improved algorithm to data reduction in aeroballistic range is presented.