转换高度 meaning in English

changeover height
transition altitude
transition level

The paper has founded the model of laser transmission in launch process and the movement model of laser - powered vehicle , and has analyzed the influence on performance of launch system , which was raised by some factors , for instance , the performance of thruster , the attenuation in transmission , the height of mode - transform , the laser power , the air drag force , the launch height , and so on
本文研究了激光推进微小卫星发射系统的概念和性能。建立了发射过程激光传输和激光推进运载器运动模型,分析了推进系统性能、大气传输衰减、模式转换高度、激光器功率、大气飞行阻力、发射点高度等因素对发射系统性能的影响。