Far-Field DOA Estimation of Uncorrelated RADAR Signals through Coprime Arrays in Low SNR Regime by Implementing Cuckoo Search Algorithm Articles uri icon

authors

publication date

  • February 2022

start page

  • 558

end page

  • 576

issue

  • 4

volume

  • 11

International Standard Serial Number (ISSN)

  • 2079-9292

abstract

  • For the purpose of attaining a high degree of freedom (DOF) for the direction of arrival
    (DOA) estimations in radar technology, coprime sensor arrays (CSAs) are evaluated in this paper.
    In addition, the global and local minima of extremely non-linear functions are investigated, aiming
    to improve DOF. The optimization features of the cuckoo search (CS) algorithm are utilized for DOA estimation of far-field sources in a low signal-to-noise ratio (SNR) environment. The analytical approach of the proposed CSAs, CS and global and local minima in terms of cumulative distribution function (CDF), fitness function and SNR for DOA accuracy are presented. The parameters like root mean square error (RMSE) for frequency distribution, RMSE variability analysis, estimation accuracy, RMSE for CDF, robustness against snapshots and noise and RMSE for Monte Carlo simulation runs are explored for proposed model performance estimation. In conclusion, the proposed DOA estimation in radar technology through CS and CSA achievements are contrasted with existing tools such as particle swarm optimization (PSO).

keywords

  • cuckoo search; root mean square error; direction of arrival; root mean square error; coprime sensor arrays