And the paper achieved conversion from the completed polar coordinates to rectangular coordinate, and solved two key problems, dead address and blind zone phenomenon.
本文完成了雷达数据从极坐标到直角坐标的转换，解决了坐标转换易出现的死地址和盲区现象。
2
A set of formulas for analyzing high order modes of coaxial lines with arbitrary section in polarcoordinate by the method of lines are rigorously derived in this paper.
本文应用直线法理论严格推导了在极坐标系统中分析任意截面形状同轴线高次模的公式。
3
Based on the characteristics of wind loads and modal shape of grandstand arc roofs of large stadiums, a polarcoordinate method for wind induced dynamic response analysis is proposed in this paper.