Based on the fully Cartesian coordinates, a differential/algebraic equation system of multibod.
利用完全笛卡尔坐标描述多刚体系统，建立多刚体系统动力学微分-代数方程。
The coordinate system must therefore be mapped from logical Cartesian coordinates to physical screen coordinates.
因此，坐标系统需要从逻辑坐标系转换到物理坐标系上去。
The yawp process such as (CFAR) is very complex, and have to complete on very short time, Image display system must change polar coordinates into Cartesian coordinates quickly.
杂波处理如恒虚警处理本身比较复杂，这类处理过程又要求快速，图像显示系统要求及时的把接收到的雷达方位数据从极坐标转换成直角坐标。
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