一、问题的提出核加固是在弹道导弹研究和发展的过程中在六十年代中期遇到的一个新课题。在弹道导弹研制初期,由于当时主要是解决导弹的有无问题,因此并没有出现这个问题。随着美苏等国都装备了弹道导弹,就遇到了如何使自己研制的导弹不被敌方的进攻性导弹所摧毁的问题。提高导弹在核袭击下的生存能力问题也就成了当时的一个重要课题。然而,由于当时对 I. PROBLEM PROBLEMS Nuclear reinforcement is a new topic encountered in the mid-1960s during the study and development of ballistic missiles. In the initial stage of the development of ballistic missiles, this problem did not arise because at that time, the main issue was to solve the problem of missiles. As the United States and the Soviet Union and other countries equipped with ballistic missiles, they encountered the issue of how to make their own missiles not destroyed by the enemy’s offensive missiles. The issue of improving the survivability of missiles under nuclear attack has also become an important topic at that time. However, due at the time