The Design of Broadband Multi-target Folding Jammer Based on a Periodic Non-uniform LFM Local Oscillator

This paper proposes a novel broadband multi-target folding jammer based on a periodic non-uniform linear frequency modulation (LFM) local oscillator (LO). It can achieve broadband receiving and transmitting with a small count of equipment. This paper also proposes a de-chirp function (DF) which is used to estimate the Nyquist zone index of the received signals and a new multi-beamforming method. The estimation value can be used to guide the transmitting frequency of the jamming signals and the new multi-beamforming method can be used to achieve the accurate multi-target jamming. The scale experiments show that the proposed folding jammer is feasible to achieve in practice and the method of DF works better than the cubic phase function (CPF) for guiding the frequency of jamming signals. The multi-beamforming simulation shows that the designated areas are covered by the relevant jamming.