Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Diversity considerations in wideband radar detection of migrating targets in clutter

Abstract

Wideband radars have been proposed for detection of moving targets, with unique capability of non-ambiguous detection due to range migration. Moreover, frequency diversity has long been used for mitigating the fading effects caused by target and clutter fluctuations. The real benefits of wideband radars are difficult to analyze, since they derive from the combined effects of target resolution in range, migration over successive cells of clutter, Doppler resolution and instantaneous bandwidth, and residual ambiguities in Doppler. In order to contribute to a better understanding of the benefits of agile transmissions for detection of moving targets, clutter cancelling performances of wideband radars are examined, demonstrating clear benefits from diversity on clutter and target, primarily – but not only – obtained through target migration effects. Special attention is given to long-range surveillance and tracking, and new results on detection of moving targets in clutter will be provided to demonstrate the effectiveness of these new architectures for small targets detection at long range, in difficult environments. Finally, recommendations for system designs that improve the discrimination of moving targets against fixed and diffuse clutter are presented.

References

  1. 1

    Le Chevalier F. Principles of Radar and Sonar Signal Processing. Norwood: Artech House, 2002

  2. 2

    De Maio A, Greco S. Modern Radar Detection Theory. Raleigh: SciTech Pub, 2016

  3. 3

    Richards M A, Scheer J A, Holm W A, et al. Principles of Modern Radar. Raleigh: SciTech Pub, 2010

  4. 4

    Le Chevalier F. Wideband wide beam motion sensing. In: Advanced Ultrawideband Radar: Targets, Signals and Applications. Boca Raton: CRC Press, 2016

  5. 5

    Cherniakov M. Bistatic Radar: Principles and Practice. Hoboken: Wiley, 2007

  6. 6

    Chernyak V. Fundamentals of Multisite Radar Systems. Boca Raton: CRC Press, 1998

  7. 7

    Bidon S, Lasserre M, Le Chevalier F. Bayesian sparse estimation of radar targets in the compressed sensing framework. In: Compressive Sensing of Earth Observations. Boca Raton: CRC Press, 2017

  8. 8

    Petrov N, Le Chevalier F, Bogdanovic N, et al. Range migrating target detection in correlated compound-Gaussian clutter. In: Proceedings of the 25th European Signal Processing Conference (EUSIPCO), 2017

  9. 9

    Ward K D, Tough R J A, Watts S. Sea clutter: scattering, the K-distribution and radar performance. Electron Lett, 1981, 17: 561–563

  10. 10

    Gerlach K. Spatially distributed target detection in non-Gaussian clutter. IEEE Trans Aerosp Electron Syst, 1999, 35: 926–934

  11. 11

    Billingsley J B. Exponential Decay in Windblown Radar Ground Clutter Doppler Spectra: Multifrequency Measurements and Model. Technical Report, 1996

Download references

Acknowledgements

This work was partially supported by STW(now Toegepaste en Technische Wetenschappen (TTW)) (Grant No. 12219).

Author information

Correspondence to François Le Chevalier.

Rights and permissions

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit https://doi.org/creativecommons.org/licenses/by/4.0/.

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Le Chevalier, F., Petrov, N. Diversity considerations in wideband radar detection of migrating targets in clutter. Sci. China Inf. Sci. 62, 40302 (2019). https://doi.org/10.1007/s11432-018-9735-6

Download citation

Keywords

  • radar
  • extended target
  • frequency diversity
  • wideband detection
  • target migration
  • clutter cancelling