A Deception Jamming Method Countering Bi- and Multistatic ISAR Based on Micro-Doppler Effect

Abstract EN

Bi- and multistatic inverse synthetic aperture radar (ISAR) operate with spatially separated transmitting and receiving antennas.

A deception jamming method countering bi- and multistatic ISAR is proposed in this paper based on the study of micro-Doppler effect.

The jammer modulates the intercepted ISAR signals with added micro-Doppler information and retransmits them to the real target, which scatters the jamming signals to the radar receivers.

Deceptive false-target images with interference bands in the cross-range direction will be induced by the jamming signals through the imaging process of radar receivers.

Additionally, real-time movement features of the false-targets can be flexibly adjusted by changing the modulation parameters, which improves the fidelity of the false-targets.

The equivalent number of looks (ENL) index is used to evaluate the jamming effects.

Simulation results validate our theoretical analysis and show the effectiveness and practicability of our method.