Abstract
Deceptive jamming may not only induce a large amount of false alarms and deteriorate the target detection performance, but also lead to degraded space-time adaptive processing (STAP) performance in an airborne radar. To tackle these issues, this paper proposes a cognitive transmitting scheme to counter the deceptive jamming for airborne array radar. The proposed approach is composed of two steps. The first step is the deceptive jamming perception. A specially designed high pulse repetition frequency (PRF) waveform is transmitted, and then the deceptive jamming is identified according to the angle clustering feature of the false targets. In the second step, the phase-only transmit pattern with notches at the jammers' directions is designed. The encountered pattern synthesis problem is nonconvex due to the fixed excitations constraint. To solve this problem, a nested alternating direction method of multipliers (N-ADMM) is proposed. With the developed approach, the radiated power at the jammers' directions is attenuated significantly. Therefore, the probing signal possesses the characteristic of low probability of intercept (LPI). Numerical examples are given to demonstrate the effectiveness of the proposed approach.
Highlights
Airborne radar is an effective sensor for providing longrange and wide-area ground moving targets reconnaissance or surveillance [1]–[3]
The airborne radar usually operates at a high altitude, which means it is easy to suffer from electronic attacks
In this paper, the problem of anti-deception jamming in an airborne array radar is considered
Summary
Airborne radar is an effective sensor for providing longrange and wide-area ground moving targets reconnaissance or surveillance [1]–[3]. Space-time adaptive processing (STAP) is a typical receive processing-based approach in an airborne radar [7]. It combines multiple spatial channels with multiple coherent pulses to realize clutter and jamming rejection. The frequency agile and waveform diversity-based approaches are effective transmit modulation-based anti-jamming schemes [11]–[13] These schemes will complicate the radar signal. The problem of anti-deception jamming for airborne array radar is solved in a cognitive perspective. Unlike the existing approaches for phase-only pattern design using semi-definite relaxation (SDR) technique [16], [17], a nested alternating direction method of multipliers (N-ADMM) is proposed to tackle the nonconvex QCLP problem. The In denotes the n × n identity matrix, while { } and { } mean the real and imaginary parts, respectively
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
