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给出了任意非麦克斯韦速度分布条件下,碰撞等离子体非相干散射谱的求解方法的一般表达式,并给出了谱计算中,所必需的两个复奇点积分的计算方法.计算了低电离层HF加热下功率谱,讨论了碰撞频率、非麦氏指数、电子密度、电子温度和离子温度对功率谱的影响.由于碰撞和非麦克斯韦因子的作用,原有的电离层参量和谱型特征的对应关系不再成立,这会对电离层参量的反演带来很大误差,必须对原有的理论模型予以修正.
The general expression for solving the incoherent scattering spectrum of collisional plasma under arbitrary non-Maxwell velocity distribution is given and the calculation method of two complex point integrals necessary for spectral calculation is given. The influence of collision frequency, non-Maxwell’s index, electron density, electron temperature and ion temperature on the power spectrum was discussed. The original ionospheric parameters and spectral type due to collision and non-Maxwellian factors The correspondence of features no longer holds. This will bring great error to the inversion of ionospheric parameters, and the original theoretical model must be amended.