Research Of Pulsed-Doppler Radar Jamming Environment Simulation

The jamming environment simulation system provides the environment of hardware-in-the-loop simulation for the measurement and evaluation of the performance of radar counter counter-measures. It can simulate the complex electromagnetic environment including echo signals, a variety of jamming and clutter. The framework of Pulsed-Doppler radar jamming environment simulation system is proposed firstly.Next, the signal and clutter characteristics, and the countermeasure techniques of PD radar are analyzed, which theoretically lay a foundation for developing the PD radar jamming environment simulation system.After that, this paper proposes a computational method to produce random sequences for clutter, these sequences not only obey the probability density distribution of the amplitude but also have a given power spectrum. In order to compute the clutter power spectrum of PD radar in real time, a closed-form algorithm is proposed. The Simulation results using MATLAB are given in the paper.At last, in order to control the phaseshift to generate noise jamming and velocity deception jamming conveniently, and to set the control parameters flexibly in the program interface, the jamming control circuits based on PCI bus are designed. The spectrum of radar signal in the presence of velocity deception jamming and the generation of digital noise are also analyzed.