Meanwhile, this technology cooperating double frequency chain can also generate wide band and ultra-wide band radar pulse compression signals.

同时，利用中频数字直接产生技术辅以倍频链还可实现宽带、超宽带雷达脉冲压缩信号的产生。

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And if not using data correlation coefficient theory to determine whether there is defect in pipe, only using PSD particular frequency band storing method, the compression rate is extremely limited.

而如果没有数据相关度理论对数据进行预处理判断是否缺陷，功率谱特定频段数据保存法的压缩能力还是极其有限。

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