再入段 meaning in English
re-entry portion
reentry stage
Examples
- In this paper , the principles and methods of target recognition are discussed mainly , using infrared optical technical equipment through the measurement of the target s temperature , radiant intensity and infrared thermal image
反导系统对于来袭弹道导弹弹道中段及再入段的识别可以用微波雷达技术，也可用光学技术。 - The guidance scheme includes a trajectory planner that generates a feasible flight trajectory and a control law that achieves bounded tracking of the downrange and crossrange distances as functions of energy
其中，轨迹规划器可产生一个可行的飞行轨迹。控制律作为能量的函数可实现再入段对纵向和横向航程的有界跟踪。 - The characteristics of the method is that it can modify the guidance coefficients automatically according to the errors between the actual trajectory and the standard trajectory , this is the essential of the standard trajectory guidance . it don " t need any pre - knowledge of the coefficients , this simplifies the problem greatly . following that , the method of predicting the falling site of the instant retuning trajectory is studied
这一方法的特点是从反馈增益系数对再入段纵程偏差修正的本质出发，利用实际弹道和标准弹道的偏差，通过调节升阻比增量，不断修正再入段纵程偏差，最终确定反馈增益系数；这一方法的优点是在求解反馈增益系数时，不必依赖先验知识选取初值，使反馈增益系数的确定更为简便。 - The approach of obtaining the guidance coefficients can be utilized in the situations in which more than four coefficients are hired for guidance to enhance the guidance performance . in addition , more precise earth model , which is non - spherical and will circle around its body axis , can be considered , and this will lead to more true results
最后，本文对进一步的工作提出了建议，认为可以考虑用四维以上的制导参数确定反馈增益系数以改善其制导性能，另外，可以进一步考虑地球旋转时影响飞船再入段纵程的因素，使得拟合结果更接近实际情况。 - Abstract : in order to achieve effective breaking through the enemy s anti - missile defense theatre and avoid intercepted by anti - missile defense system , many breakthrough methods have been implemented in middle course and re - entry phase of ballistic missile to protect the missile from acquisition , tracking and recognition by anti - missile system
文摘:弹道导弹为实现有效的突破反导防区而不被防御系统拦截，在其弹道中段和再入段采用了多种突防措施，以免受反导系统的搜索、跟踪和识别。