Based on perturbation method of distributed sky-wave over the horizon radar sea clutter modeling

For distributed sky-wave over the horizon radar (DSOTHR), we analyzed of shortcomings of the generalized function method to establish its model of sea clutter. At the same time based on perturbation method derived the DSOTHR sea clutter model expression. Finally, the influence of various radar parameters on the sea clutter model is simulated, and presented the typical sea clutter model of DSOTHR after adding noise and the ionosphere broadening.