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Radar CFAR Thresholding in Clutter and Multiple Target Situations

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1 Author(s)
Rohling, H. ; AEG-Telefunken

Radar detection procedures involve the comparison of the received signal amplitude to a threshold. In order to obtain a constant false-alarm rate (CFAR), an adaptive threshold must be applied reflecting the local clutter situation. The cell averaging approach, for example, is an adaptive procedure. A CFAR method is discussed using as the CFAR threshold one single value selected from the so-called ordered statistic (this method is fundamentally different from a rank statistic). This procedure has some advantages over cell averaging CFAR, especially in cases where more than one target is present within the reference window on which estimation of the local clutter situation is based, or where this reference window is crossing clutter edges.

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Aerospace and Electronic Systems, IEEE Transactions on  (Volume:AES-19 ,  Issue: 4 )