雷达科学与技术2012，Vol.10Issue(2)：174-179,186,7.
飞行器升阻比估计误差分析方法研究
Study on Vehicle Lift-to-Drag Ratio Estimation Error Analysis Method
王璐璐 1秦玉亮 1王宏强 1程永强1
作者信息
- 1. 国防科技大学电子科学与工程学院,湖南长沙410073
- 折叠
摘要
Abstract
Lift-to-drag ratio(LDR) is one of the most significant indices in the flight-test of vehicles. The main resources of LDR estimation are the high precision radar measurement data. The key problem to be tackled in flight-tests and after-tests disposal is to analyze the error propagation of radar measurement error to . the LDR estimation error. This paper derivates the transformation from radar measurements to LDR based on the three-degree-of-freedom(3DOF) hypersonic vehicle dynamic model. To solve the problem of high nonlinear transformation, Unscented Transform(UT) is utilized to estimate the statistics of LDR. Eventually the error propagation from radar tracking data to LDR is obtained. Experiment results illustrate that the method can be applied to the analysis of LDR error estimation for the near space hypersonic vehicle.关键词
高超声速飞行器/升阻比/估计误差分析/Unscented变换Key words
hypersonic vehicle/ lift-to-drag ratio/ estimation error analysis, unsecented transform分类
信息技术与安全科学引用本文复制引用
王璐璐,秦玉亮,王宏强,程永强..飞行器升阻比估计误差分析方法研究[J].雷达科学与技术,2012,10(2):174-179,186,7.
