一、再入遥测的“黑障”问题早在五十年代,国外在战略武器的研制过程中就发现地-地导弹弹头再入大气层时,无线电遥测信号有严重的中断现象,此即文献中所说的“黑障现象”。美国在1957年就公开报道过导弹飞行试验的黑障问题,随后投入了大量的人力、物力对比进行研究。 First, re-entry telemetry “black barrier” As early as the fifties, foreign strategic arms in the development process found in the ground-to-ground missile warhead into the atmosphere, the radio telemetry signal has a serious interruption phenomenon, which is the literature The so-called “black barrier phenomenon.” In 1957, the United States made a public report of the black-barrier problem of missile flight tests. Afterwards, it invested a great deal of manpower and material resources to conduct a comparative study.