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  4. Multi-angle DVB-S based passive ISAR sensitivity to target motion estimation errors
 
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2023
Conference Paper
Title

Multi-angle DVB-S based passive ISAR sensitivity to target motion estimation errors

Abstract
In this work, we consider a multistatic passive radar configuration comprising a DVB-S illuminator of opportunity and multiple receivers on or near the Earth surface for multi-angle passive ISAR imaging. As shadowing effects are greatly reduced by merging the information taken from different viewing angles, the multistatic image can provide a more detailed representation of the target, paving the way forward its classification. Back-Projection Algorithm (BPA) is an appealing focusing tool for such a configuration, since it allows producing the individual images on a common reference plane regardless the different bistatic angles. However, as the exploitation of satellite signals of opportunity entails a poor capability to have an accurate knowledge of the target kinematics, a significant geometry-dependent image distortion is likely experienced, and therefore registration errors among the images must be taken into account. Theoretical and numerical analyses are here provided to measure the impact of errors in the target rotation estimates on the resulting multi-angle passive ISAR images. The analysis is also complemented with a few experimental results, comprising a turning ferry and an Astra satellite.
Author(s)
Santi, Fabrizio
Pisciottano, Iole  
Fraunhofer-Institut für Hochfrequenzphysik und Radartechnik FHR  
Pastina, Debora
Cristallini, Diego  
Fraunhofer-Institut für Hochfrequenzphysik und Radartechnik FHR  
Mainwork
IEEE Radar Conference, RadarConf 2023  
Conference
Radar Conference 2023  
DOI
10.1109/RadarConf2351548.2023.10149548
Language
English
Fraunhofer-Institut für Hochfrequenzphysik und Radartechnik FHR  
Keyword(s)
  • DVB-S based passive ISAR

  • image registration

  • multistatic ISAR

  • multistatic radar

  • passive radar

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