在雷达系统中，将数字化处理（A／D变换和D／A变换）尽量靠近天线即实现射频数字化接收系统是发展方向，也是实现全数字化雷达的关键技术。射频数字化接收技术简化了系统设计，降低了设备量，减小了系统的非线性失真。文中讨论了射频数字化接收系统研制中的关键技术，给出了实验结果。

Modern radar system relies heavily on DSP to achieve high levels of system performance and flexibility. It is developing trends to put the analog to digital conversion for radar antenna element as close as possible to the antenna. The technology advances on high speed ADC and DSP promise to allow digital techniques to be used at RF. The key techniques in the study on digitized receiving subsystem at RF is described in the paper. The design simplified the receiving subsystem and reduced the nonlinear distortion.

TN957.5