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Pre-processing of spaceborn polarimetric scatterometer

Polarimetric backscatter measurements has potential benefits to improve wind retrieval performance [1]. It simultaneously measures co-polarized backscatter coefficient (σ<sub>hh</sub>, σ<sub>vv</sub>) and the correlation coefficient of the co- and cross-polarized component (σ<sub>vhhh</sub>, σ<sub>hvvv</sub>) of radar returns. A pre-processing design of spaceborne polarimetric scatterometer will be introduce in this paper considering to improve the resolution by range filtering [2]. A corresponding formulation for assessing the variance of the measurements due to fading and the thermal noise is presented considering the factors affecting the measurement accuracy.