对称三角形 meaning in English

symmetrical triangles

We know that range - velocity coupling could n ' t be eliminated in the lfmcw radars of single frequency modulation slope . based on the characteristic that the range shift is symmetrical between positive and negative frequency sweep in triangular frequency modulation continuous waves , a method of frequency domain pairing is proposed to solve range - velocity coupling problem
分析可知，由距离速度耦合引起的距离偏移在单扫频线性调频连续波雷达中无法消除，但在对称三角形调频连续波中上、下扫频段的距离偏移会出现对称性。