The key component of the system is a digital intermediate frequency receiver employing DSP and FPGA to obtain amplitude and phase data in real-time, which improves measurement speed and flexibility.
The real time processing of high speed data flow makes strict demands on the performance of descendant digital down converter in the wideband digital receiver.
在宽带数字接收机中，高速数据流的实时处理对后继数字下变频器性能提出了极为苛刻的要求。
3
Compared with common digital signature scheme, it has authentication, secrecy, data integrity and privacy of the receiver.