The Analysis of Frequency Diverse Phased Multi-Input Multi-Output Radars within Non homogeneous Environments

Document Type : Original Article

Authors

1 PhD student, Yazd University, Yazd, Iran

2 Assistant Professor, Department of Telecommunications, Faculty of Electrical Engineering, Yazd University, Yazd, Iran

3 Associate Professor, Noshirvani University of Technology, Babol, Iran

4 Associate Professor, Yazd University, Yazd, Iran

Abstract

In this paper, phased multiple-input-multiple-output radars (known as PMRs) that transmit
frequency diverse orthogonal signals with full overlapped sub-arrays are studied. At first, the
optimal detector of PMR is designed by assuming heterogeneous clutter and random target
scattering coefficients. Then, for the optimal detector, the closed-form detection probability and
false-alarm rate are computed. At the end, the power assigned to the orthogonal signals is
optimized analytically based on the convex optimization framework to maximize the detection
probability. The numerical simulations show that the optimal detector is a joint spatial-temporal
filter that attenuates the clutters considerably by effectively combining orthogonal signals in
order to to improve the PMR detection probability in comparison with the phased radar (PR).
Furthermore, simulation results illustrate that optimal power assignment in the form of
orthogonal waves, based on the statistics of the target scatterings and that of the clutter,
improves the detection performance of the PMR in comparison with the conventional equal
power assignment methods.

Keywords

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References

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Radar
Volume 9, Issue 1 - Serial Number 25
September 2021
Pages 1-16

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History

  • Receive Date: 13 July 2021
  • Revise Date: 01 October 2021
  • Accept Date: 04 December 2021
  • Publish Date: 23 August 2021

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