A relationship between external noise and the ocean clutter models for bistatic operation of a pulsed high-frequency radar

摘要

Bistatic models of the ocean clutter in the context of pulsed high-frequency ground wave radar (HFGWR) operation have previously been developed. Several new features, distinct from earlier monostatic developments, appear as products of the analysis. The question that must be addressed is "will the characteristics of the theoretical clutter models be visible in real-life data collected from the ocean surface?" One of the major considerations in answering this is the development of an appropriate noise model. Such a model for the noise spectral density as it relates to the pulsed HF radar operation is considered here. The analysis proceeds on the assumption of an ideal, externally noise limited, system. The aliasing due to noise undersampling is seen to be an integral part of the model. Statistical stationarity is assumed throughout.