微波干涉仪在火箭羽流电子密度测定中应用研究

为研究火箭羽流的等离子体对导弹隐身性能和制导能力的影响，利用微波干涉仪设计了一种基于微波法的电子密度测试系统。采用有效的噪声屏蔽硬件措施和消除噪声的数据处理方法，提高了电子密度测试的精度。准确测试出不同推进剂之间电子密度特征上的差异，其测试结果与理论预估相符。该测试系统的使用对高电子密度的推进剂配方改进及等离子发动机设计具有一定的指导意义。

Application Research of Microwave Interferometer in the Measurement of Electron Density in Rocket Plumes

In order to study the impact of plasma of rocket plums to missile concealment and guidance, a measurement system of electron den- sity based on microwave method is designed by microwave interferometer. The accuracy of electron density is improved by effective noise shield hard- ware and anti-disturbance data processing method. The difference of electron density among propellants can be measured, and is consistent with the- ory calculation. It is valuable to use this system for optimizing the formulations of high electro density propellant and designing plasma engine.