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Bistatic clutter modelling

Bistatic clutter modelling

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This chapter addresses the study of the properties of bistatic clutter, compared with monostatic with a particular focus on recent results from analysis of real sea clutter data. Clutter is usually defined as the unwanted radar returns from land, sea, rainfall or other phenomena, which may mask the echoes from targets, and its models usually reproduce the normalized radar cross section, spatial and temporal correlation properties, statistical variability and Doppler spectrum. Such models are important in order to develop target detection techniques and evaluate their performance under variable environmental conditions. The properties of monostatic clutter are influenced by radar parameters - i.e. frequency, resolution cell size, incidence angle and polarization - and environmental conditions. In the case of sea clutter, important environmental parameters are: wind and wave direction, level of development of the sea and depth of the sea. On the other hand, bistatic clutter is heavily influenced by the system geometry, i.e. the relative position of the radar receivers with respect to the transmitters, resulting in new degrees of freedom to include in future models.

Chapter Contents:

  • Abstract
  • 12.1 Radar clutter
  • 12.2 Clutter models
  • 12.2.1 Mean reflectivity
  • 12.2.2 Clutter statistics
  • 12.3 Bistatic clutter models
  • 12.3.1 Bistatic geometry
  • 12.3.2 Bistatic sea clutter
  • 12.3.2.1 Out-of-plane bistatic sea clutter
  • 12.3.3 Bistatic land clutter
  • 12.3.4 Statistical properties of bistatic clutter
  • 12.3.5 Clutter in passive bistatic radar
  • 12.4 Forward scatter
  • 12.4.1 Target echo signal and clutter
  • 12.4.2 Experimental measurements
  • 12.5 Bistatic clutter measurements
  • 12.5.1 Practical considerations in bistatic radar trials
  • 12.5.2 Clutter spikes
  • 12.6 Summary
  • Acknowledgements
  • References

Inspec keywords: optical radar; radar cross-sections; radar clutter; radar transmitters; object detection; radar receivers; echo

Other keywords: wave direction; spatial correlation properties; radar parameters; monostatic clutter; radar transmitters; real sea clutter data; unwanted radar returns; temporal correlation properties; radar receivers; target detection; bistatic clutter modelling; Doppler spectrum; variable environmental conditions; target echo; statistical variability; wind direction; normalized radar cross section

Subjects: Radar theory; Optical radar; Electromagnetic compatibility and interference; Optical, image and video signal processing

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