| Noise Jamming is very effective and popular used in the electronic countermeasure (ECM) system. The noise jamming signal simulator is the main part of electronic warfare comprehensive experiment simulation system. The simulator generates the various jamming signals for the electronic warfare comprehensive experiment simulation system, and checks the anti-jamming ability of the tested radar.This essay introduced the system diagram of radar receiver. Then I introduced the statistical characteristics of the noise signal, noise amplitude-modulation signal, noise frequency-modulation signal and noise phase-modulation signal, and their statistical characteristics, jamming frequency, power spectrum after being received by radar receiver, as well as the selection of corresponding parameters in projects. Then, I introduced the principle and realization of several effective deceiving methods to radars of different patterns. The major method is noise jamming with deception jamming in operation. At last, I illustrated how to realize the function of system in the aspects of circuit design, main components selection and specific design in FPGA. The specific design method and the application in project of Nios II embedded system are introduced in details. |
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