The Research And Design Of Background Signal Generation System In The Complex Electromagnetism Environment

The modern battle in 21st century will be information-based and electronic-based. In the modern battlefield,the electromagnetism signal will be quite dense which formed the extra complex electromagnetism environment.The Dynamic Background Signal Generation System is aimming at constructing an electromagnetism environment which contains high signal frequency,different signal pattern and huge signal density. The main function of the system is to simulate a real-time communication environment to test the missile or other high-tech weapon's anti-jamming capacity in the battlefield nowadays.This paper is based on the project of the Dynamic Background Signal Generation System。Firstly,the paper analyses the project of background signals on the basis,compares the advantage and disadvantages of them,bring forward the"FPGA+DDS"project based on software radio technology,choose the hardware chips according to the project,and sum up the problems in the hardware design;In order to use resource of FPGA reasonably,bring out the settle way of the fixed Bsaeband signal source, analyses the signal generate way based on quadrature modulation technology,make out the realize way and evaluate the capability,Finally introduce the control design of signal source memorizer and USB control unit.