The scheme accomplishes range tracking by adopting three range gate tracking to make middle gate always centered at echo pulse center through feedback circuit and deviation calculation circuit.

该方案采用三波门跟踪，通过偏差计算电路和反馈控制电路使中间波门中心始终对准目标回波脉冲中心，完成距离跟踪。

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The results show that chirp is nonlinear and has extreme value near the center of the pulse and depends on the initial chirp.

研究结果表明：三阶色散所致啁啾是非线性的，存在极值，极值点在脉冲中心附近，并且与入射高斯脉冲的初始啁啾有关。

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So the micro energy pulse power supply in the flexible manufacture center should also have the multi-functional characteristics adapting to the multi-processing technics.

因此适用于这种柔性制造中心的微能脉冲电源也应具有适合多种加工工艺的多功能特性。

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