The Long-range Dependence Characteristic Analysis of Sea Clutter Based on the Semivariogram Function

A target detection method based on the long-range dependence characteristic of sea clutter is proposed. By using the semivariogram function, the long-range dependence feature curve of sea clutter versus time is obtained. According to the curve, we suggest the slope and sample mean value of semivariogram curve as parameters to describe the fractal characteristics of the target and sea clutter. The analysis tests show that, with the two parameters, the target could be effectively distinguished from the sea clutter background.