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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It proves that it is superior to use the "deviation input" to the "absolute-value input" and better to use time circuit with variable time constant than to use square circuit.

为全面实现以上原则通过理论分析指出采用偏差输入将优于采用绝对值输入； 采用时间常数可变的时限电路将优于采用平方电路。

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The paper offers an analysis of the influence of measuring power circuit of eletremeter internal resistence by half-deviation on the measurement.

本文就半偏法测电表内阻的电源电路对测量的影响进行了分析。

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