Abstract
Existing methods for calculating the microwave-radiation characteristics of the ocean surface using the Kirchhoff method are considered. The practice of application of the empirical dependences typical for developed sea waves is analyzed. A joint analysis of wave-graphic and radiometric data of an early experiment on bistatic sensing of the sea surface in which the Sun was used as a powerful natural source of sensing microwave radiation is made. The existing method for theoretical calculations is improved. It is demonstrated that, while the improvement is evident, the method of calculation based on the assumption that the sea waves are developed can provide a high accuracy at most in 20% of all possible cases.
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