Making use of rotary encoder attains the purpose of measuring rotative Angle of wiper through single chip computer 8051 to count the pulse of rotary encoder generating, which is drove by wipers axle.

主要介绍了旋转编码器的工作原理，通过8051单片机来累计旋转编码器被刮水器转轴带动所产生的脉冲数，将其换算转化为角度，从而达到测量刮水器转角的目的。

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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。

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When calculating, only function of the longitudinal generating curve of the revoluted curved surface and the value of the projecting angle are needed to be substituted into these formulas.

这些公式的运用很简便，只常将回转曲面的纵母线函数及投射角的值代入即可。

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