Abstract For the best estimates of real wind field on the nonlinear and non-stationary conditions, an approach to measure wind fields with cumulant of signals' increment in the spaced antenna radar is presented in this paper. From structure-function-based approach and characteristics of the high-order cumulant in signal processing, the mean horizontal wind speed and turbulence characteristics of scattering medium with zero-lag cumulant of increment are obtained. The computer simulations based on atmospheric...