高层大气风场洛伦兹光谱线型粒子辐射率探测研究

以高层大气中的极光谱线为被探测源,提出了一种高层大气(80—300km)风场洛伦兹光谱线型的粒子辐射率被动探测的新原理.采用该原理不仅可获得高层大气风场的速度、温度和压强信息,更重要的是还能同时探测到高层大气中辐射粒子体辐射率,解决了目前高层大气风场研究中只能探测高层大气风场速度、温度和压强却不能获知粒子的体辐射率的问题.给出了基于洛伦兹光谱线型的辐射源粒子体辐射率、大气风场速度、温度和压强的理论计算公式.采用计算机模拟对探测误差进行了分析,给出了体辐射率、风场速度、温度、压强的误差分布规律,为进一步丰富和完善高层大气风场探测提供了理论依据和实验基础,对航空航天、空间探测、环境保护、国家安全和国民经济建设都具有重要的科学意义和广阔的应用前景.

Passive detection of upper atmospheric wind field based on the Lorentzian line shape profile

Taking the aurora in upper atmosphere as the detection source, we propose a new principle of passive detection of emission rate in upper atmosphere wind based on the Lorentzian line shape profile. Using this principle, we can detect not only the physical parameter of upper atmospheric wind such as velocity, temperature and pressure, but aslo the emission rate, which resolves the problem of detecting emission rate at present. The calculation formula of the distribution of the velocity, temperature, pressure and emission rate are deduced based on the Lorentzian line shape profile, and by using computer simulation, the error curve is described. This study provides a theoretical basis for further study of detection of upper atmospheric wind field. It will play a significant role and has a wide application prospect in aerospace, space exploration, and environmental protection.