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An approach to suppress short-range clutter for non-side looking airborne radar

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Journal of Electronics (China)

Abstract

When the Airborne Early Warning (AEW) radar transmits medial or high Pulse Repetitive Frequency (PRF) signal, the range ambiguity occurs. The clutter of short-range clutter has serious range dependence problem for non-Side Looking Airborne Radar (non-SLAR). As a result, the clutter plus noise covariance matrix can not be estimated correctly, and the performance of clutter suppression obtained by Space-Time Adaptive Processing (STAP) degrades greatly. The uniform linear array has not elevation degrees; therefore, the short-range clutter can not be suppressed directly. A short-range clutter suppression method is proposed. The method first estimate the elevation angles of the ambiguous short-range gate, then eliminates short-range clutter by space time interpolation and adds moving target protection in the procedure. This method can suppress the short-range clutter well. Simulation results show the validity of the method.

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Authors and Affiliations

  1. National Lab of Radar Signal Processing, Xidian University, Xi’an, 710071, China

    Ming Li, Guisheng Liao & Liang Zhang

  2. Nanjing Research Institute of Electronics Technology, Nanjing, 210000, China

    Liang Zhang

Authors
  1. Ming Li
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  2. Guisheng Liao
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  3. Liang Zhang
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Corresponding author

Correspondence to Liang Zhang.

Additional information

Support by the National Natural Science Foundation of China (No. 60736009 and No. 60825104).

Communication author: Li Ming, born in 1984, male, Ph.D.. National Lab of Radar Signal Processing, Xidian University, Xi’an 710071, China.

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Li, M., Liao, G. & Zhang, L. An approach to suppress short-range clutter for non-side looking airborne radar. J. Electron.(China) 28, 64–70 (2011). https://doi.org/10.1007/s11767-011-0452-9

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  • DOI: https://doi.org/10.1007/s11767-011-0452-9

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