Open AccessLow probability of intercept‐based distributed MIMO radar waveform design against barrage jamming in signal‐dependent clutter and coloured noise
Author(s) -
Shi Chenguang,
Wang Fei,
Sellathurai Mathini,
Zhou Jianjiang
Publication year - 2019
Publication title -
iet signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.384
H-Index - 42
ISSN - 1751-9683
DOI - 10.1049/iet-spr.2018.5212
Subject(s) - clutter , waveform , jamming , computer science , radar , mimo , low probability of intercept radar , electronic engineering , continuous wave radar , radar jamming and deception , pulse doppler radar , noise power , algorithm , power (physics) , telecommunications , engineering , radar imaging , beamforming , physics , quantum mechanics , thermodynamics
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.