航天器实时落点计算误差修正方法

在介绍航天器实时落点估算的作用和实现原理的基础上,分析了采用＂龙格-库塔＂算法进行航天器实时落点估算的误差,提出了采用测量方案实时选优、建立空气阻力修正模型和修正＂龙格-库塔＂算法本身引起的误差的落点估算误差修正方法,该方法对提高航天器实时落点估算的精度,确保成功地实施航天器安全控制和回收提供了更加准确的依据。

Error Correction Method for Real-time Estimating Aerocraft Fall Point

On the basis of introducing functions and implementing principles of the real-time estimating aerocraft fall point,the paper analyzed error of adopting the four-steps Runge-Kutta algorithm to estimate the aerocraft fall point.The error correction for Real-time estimating aerocraft fall point has been discussed in this paper,choosing the best measurement scheme to estimate aerocraft fall point in the flight test,establishing correction model of the air resistance,correcting the four-steps Runge-Kutta algorithm error.The method has provided more scientific conclusion for improving accuracy of the real-time estimating aerocraft fall point,ensuring flight safety control and reclaiming the aerocraft in flight test.