箔条回波的统计特性

Statistical Properties of Chaff Echoes

讨论了箔条回波的功率话密度和两个极化散射分量的互相关系数。在箔条偶极子速度分布服从麦克斯威尔分布的条件下，证明了箔菜回波功率谱密度具有高斯函数形式。箔条的两个极化散射分量间的互相关特性对子研究极化流格条干扰有重大意义。本文在范余均匀分布于θ0≤θ≤π-θ0，0≤φ≤2π域内的条件下，推导了箔条的两个极化散射分量的互相关系数。

The power spetral density of the chaff echoes and the crdeorrelation coefficient of polarization scatter fractions of the chaff cloud is discussed in this paper. It is showed that the power spectral density of the chaff echoes is Gauss function in case that the velocity distribution of the chaff dipoles in Maxwell. The croaseorrelation properties of the chaff polarization scatter fractions are significant to counteract chaff interference, so the crosscorrelation coeffitient of the chaff echoes is derived on assuming that the chaff dipoles are even distribution in θ0≤θ≤π-θ0，0≤φ≤2π.