Electronics and Control

A Autonomous Location Algorithm of Airborne Synthetic Aperture Radar

  • SONG Wei ,
  • ZHU Daiyin ,
  • YE Shaohua ,
  • LI Yong
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  • 1. College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    2. AVIC Leihua Electronic Technology Research Institute, Wuxi 214063, China

Received date: 2013-11-06

  Revised date: 2014-04-04

  Online published: 2014-04-09

Supported by

Aeronautical Science Foundation of China (20132007001);Defense Industrial Technology Development Program(B2520110008);NUAA Fundamental Research Funds(NS2013023)

Abstract

Aimed at the application of airborne synthetic aperture radar (SAR), airborne SAR autonomous location technology is studied in this paper. A new location algorithm by imaging the area of the target repeatedly is proposed. This algorithm will not be influenced by the velocity error and angle error of the platform and it only uses the carrier aircraft instantaneous position and the distance between the radar and the target, which can significantly improve the location precision of airborne SAR. A location algorithm based on the least square method is analytically derived when carrier craft flights staring at target, which can further improve the location precision. Finally, the new presented method is compared with SAR location techniques based on the traditional R-D model. Real data processing results demonstrate that the new algorithm proposed in the paper can improve the location precision significantly.

Cite this article

SONG Wei , ZHU Daiyin , YE Shaohua , LI Yong . A Autonomous Location Algorithm of Airborne Synthetic Aperture Radar[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014 , 35(8) : 2279 -2285 . DOI: 10.7527/S1000-6893.2014.0041

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