降低再入点测量精度要求的分析方法  

Analysis Method to Decrease Required Measurement Accuracy of Reentry Point

作　　者：杨萍[1] 刘利生[1] 

机构地区：[1]北京跟踪与通信技术研究所,北京100094

出　　处：《导弹与航天运载技术》2007年第2期5-9,共5页Missiles and Space Vehicles

摘　　要：提出了一种再入精度分析的新方法,可以有效降低再入点测量精度要求。该方法借助计算机数值计算建立再入误差模型,并通过消元法消去再入段初值误差对再入误差的影响,从而获得再入误差方程,再利用折合方法,得到再入误差量值。利用本方法分析再入误差不需对再入点的测量精度提出苛刻的要求,只需在再入段某一段落得到较高精度的参数即可。对研究再入场区测控布站有很好的参考价值,对制导工具误差和制导方法误差分析中误差模型的建立也有较好的参考价值。A new method for reentry accuracy evaluation which can effectively decrease the measurement accuracy required at the reentry point is brought forward. This method establishes reentry error model by means of computer numerical value calculation and eliminates the influence to reentry error of initial value error in reentry phase by element elimination. Reentry error formula being so found, reentry error values can be got by conversion method then. By this method, there are not any rigorous demands to measure accuracy of reentry point for analyzing reentry error. The acquisition of high precision parameters in certain reentry section can be realized. A good reference to the TT＆C arrangement in reentry range has been provided, and it is also valuable to the establishment of error model in guidance error analysis for tools and methods.

关 键 词：再入误差 积分弹道 干扰 

分 类 号：V448[航空宇航科学与技术—飞行器设计]