由混频器，本振，中频组成。

They have mixers, local oscillators, and IF chains.

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在介绍瞬时中频测试技术的基础上，介绍利用瞬时中频测试技术对捷变频雷达本振跟踪精度进行测试的原理和方法。

Bases on the IIFM technique, the principle and method to measure the local oscillator tracking accuracy of frequency - agile radar is put forward in this paper.

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在介绍瞬时中频测试技术的基础上，介绍利用瞬时中频测试技术对捷变频雷达本振跟踪精度进行测试的原理和方法。

Bases on the IIFM technique, the principle and method to measure the local oscillator tracking accuracy of frequency - agile radar is put forward in this paper.

youdao