Estimating Target Lengths Shorter Than the Radar Pulse Width |
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Authors: | Nicholson DL |
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Institution: | Department of Electrical Engineering United States Naval Academy Annapolis, Md. 21402; |
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Abstract: | This paper discusses the performance and sensitivity of a maximum-likelihood length estimation algorithm which was originally developed to estimate the separation between unresolved point scatterers. It shows that when the two-scatterer target model is valid, the algorithm reliably estimates lengths shorter than the Rayleigh limit provided that the strength of no third interior scatterer (or its equivalent created by a few very closely spaced scatterers) is greater than the geometric mean of the strengths of the fore and aft scatterers. |
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