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A DELAY-LINE CANCELLATION METHOD FOR CLUTTER ATTENUATION AND ELIMINATION OF BLIND SPEED

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Abstract

In this paper, a conceptual schematic for the search radar has been presented which offers clutter cancellation as well as blind speed elimination. It is assumed that the radar is performing conical scan in both azimuth and elevation. For such cases, strong clutter signals are likely to be intercepted from off-boresight angles. A pulse-to-pulse comparison method is presented where the radar transmits and receives SUM beam during the first pulse and DIFFERENCE beam in the second pulse. The detected voltages for the echoes received during the pulse intervals are subtracted from each other and the negative voltage at the output of subtractor is discarded. This result in a narrow beam pointed in the direction of angle of arrival. This method, in receive only mode, can also be used for calibration of large phased arrays.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, University Institute of Technology, Burdwan, 713 104, India

    Q. M. Alfred

  2. Department of Electronics and Communication Engineering, Jaypee University of Information Technology, Solan, 173 215, India

    T. Chakravarty & G. Singh

  3. Department of Electronics and Telecommunication Engineering, Jadavpur University, Kolkata, 700 032, India

    Salil K. Sanyal

Authors
  1. Q. M. Alfred
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  2. T. Chakravarty
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  3. G. Singh
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  4. Salil K. Sanyal
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Alfred, Q.M., Chakravarty, T., Singh, G. et al. A DELAY-LINE CANCELLATION METHOD FOR CLUTTER ATTENUATION AND ELIMINATION OF BLIND SPEED. Int J Infrared Milli Waves 27, 1529–1538 (2006). https://doi.org/10.1007/s10762-006-9152-1

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  • DOI: https://doi.org/10.1007/s10762-006-9152-1

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