To consider the echoes' characteristic of the moving target with small angle for inverse synthetic radar (ISAR), the target's echoes are simulated by generating the envelope and phase quickly.
针对逆合成孔径雷达（ISAR）的小转角目标回波特点，提出通过快速生成包络和相位的方法来构成目标回波。
In frequency analysis of rotating arc signal, the phase of harmonic characteristic reflects the initial Angle between weld direction and seam's direction.
在旋转电弧信号的频域分析中，其特征谐波的相位反映了焊缝方向与焊接方向的初始夹角。
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