作为一种适用于大多数机载火控雷达内、外场联试的应答机，它成功地实现了机载雷达运动目标的实时仿真，即系统不仅能进行回波信号距离延时，幅度变化的模拟，还能精确控制目标的多普勒频移。本文结合实际介绍了该种应答机的组成和功能，并就产品研制过程中的一些关键技术进行了重点阐述。

A transponder applied to most of airborne fire-control radar test has successfully simulated the moving target of airborne radar. The system can simulate not only the range and amplitude, but also the Doppler frenquency shift. This article introduces the structure and function of this transponder on the basis of its practical use, interprets some of the crucial technology used in the product development.

TN959.73