全数字式接收机是未来雷达接收机的发展方向。目前由于A/D变换器和DSP器件的速度限制,仍未实用化。文中提出了一种先进的全数字式阵列接收机方案,可应用于短波超视距雷达。该方案利用目前商业上可得到的A/D变换器,直接对天线下来的信号进行A/D变换,然后在数字域中进行相干检波,极大地简化了接收机设计,而又能获得极佳的性能。

The development of modern radar receiver tends to the trend of all-digital receiver,now the speed of ADC and DSP chip limits its utillization.An advanced all-digital array receiver is developed for an Over-the-horizon radar application.With a current commercially available ADC chip to digitize the amplified signal from a HF antenna without the requirement of a conventional receiver,it greatly simplified the design of array receiver,and can attain very good performance.

TN958.93 TN957.5