Physical meaning: the self-correlation function and the energy spectrum density function compose a Fourier transform pair.

物理含义：能量信号的自相关函数与能量谱密度函数构成傅立叶变换对。

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Relationship between the target scattering function and the echo signal is deduced to hold as a Fourier transform pair by analyzing the texture of echo signal for a passive radar imaging system;

首先分析了无源雷达成像系统的目标回波形式，得到了目标散射分布函数和雷达接收信号之间的傅里叶变换对关系；

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