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access icon free Low probability of intercept-based distributed MIMO radar waveform design against barrage jamming in signal-dependent clutter and coloured noise

  • Author(s): Chenguang Shi 1, 2 ; Fei Wang 1 ; Mathini Sellathurai 3 ; Jianjiang Zhou 1
    • View affiliations
  • Source: Volume 13, Issue 4, June 2019, p. 415 – 423
    DOI:  10.1049/iet-spr.2018.5212 , Print ISSN 1751-9675, Online ISSN 1751-9683
© The Institution of Engineering and Technology
Received 05/06/2018, Accepted 15/01/2019, Revised 08/12/2018, Published 17/01/2019

This study investigates the problem of low probability of intercept (LPI)-based distributed multiple-input multiple-output (MIMO) radar waveform design against barrage jamming in signal-dependent clutter and coloured noise. Given the priori knowledge of the extended target impulse response, signal-dependent clutter, barrage jamming signals and coloured noise, the LPI-based scheme for optimal radar waveform design is proposed to minimise the total power consumption of the MIMO radar system by optimising the transmitted waveforms of different transmitters with a predetermined mutual information (MI) constraint for target characterisation performance. Firstly, the MI between the received echoes from the target at each receiver and the target impulse response is derived as a practical metric to characterise the parameter estimation performance of a target. Then, the LPI-based distributed MIMO radar waveform design strategy is developed. The resulting radar waveform optimisation problem is convex and solved analytically, whose solutions represent the optimum power allocation for each transmitter in the MIMO radar system. With the aid of numerical simulations, it is illustrated that to minimise the total transmission power, the optimal waveform should match with the target, clutter, jamming and coloured noise. In addition, it is also demonstrated that the LPI performance of the MIMO radar system can be significantly improved by employing the proposed radar waveform design scheme.

Inspec keywords: radar signal processing; jamming; optimisation; radar receivers; MIMO radar; covariance matrices

Other keywords: radar waveform optimisation problem; MIMO radar waveform design strategy; LPI-based scheme; predetermined mutual information constraint; coloured noise; MIMO radar system; extended target impulse response; multiple-input multiple-output radar waveform design; radar waveform design scheme; transmitted waveforms; target-to-clutter ratios; barrage jamming signals; total transmission power; signal-dependent clutter

Subjects: Radar theory; Electromagnetic compatibility and interference; Optimisation techniques; Radar equipment, systems and applications; Algebra; Other topics in statistics

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