17 May 2012 Detection of slow-moving targets in sea clutter by HRR generalized detector
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Abstract
The radar detection of targets in the presence of sea clutter has relied upon the radial velocity of targets with respect to the radar platform either by exploiting the relative target Doppler frequency (for targets with sufficient radial velocity) or by discerning the paths targets traverse from scan to scan. For targets with little to no rapid velocity component, though, it can become quite difficult to differentiate targets from the surrounding sea clutter. The present paper addresses the detection of slow-moving targets in sea clutter using the high resolution radar (HRR) based on the generalized detector (GD) constructed in accordance with the generalized approach to signal processing (GASP) in noise such that the target has perceptible extent in range. Under the assumption of completely random sea clutter spikes based on a ε-contaminated mixture model with the signal and clutter powers known, the best detection performance results from using the GD and is compared with that of the likelihood ratio test (LRT GD). For realistic sea clutter, the clutter spikes tend to be a localized phenomenon. Based upon observations from real radar data measurements, a heuristic approach exploiting a salient aspect of the idealized GD is developed which is shown to perform well and possesses superiority over the LRT GD performance when applied to real measure sea clutter.
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Vyacheslav Tuzlukov, Vyacheslav Tuzlukov, } "Detection of slow-moving targets in sea clutter by HRR generalized detector", Proc. SPIE 8392, Signal Processing, Sensor Fusion, and Target Recognition XXI, 83921L (17 May 2012); doi: 10.1117/12.919844; https://doi.org/10.1117/12.919844
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