The invention provides a high-resolution spaceborne SAR ship target
imaging processing method under a complex sea condition, and relates to the technical field of
imaging processing, and the method comprises the steps: enabling a
system to flexibly adjust an accumulated energy ratio threshold according to a real-
time signal condition through a dynamic adjustment
fine tuning index strategy, introducing a
phase compensation function as a primary function, and adding a time window parameter, thereby achieving the high-resolution spaceborne SAR ship target
imaging processing. The method is more suitable for the
instability of strong scattering point echoes under high sea conditions, and the robustness of the
algorithm is further improved; the steps of parameter
estimation, residual error updating and component extraction are carried out in a
frequency domain, so that the search dimension is reduced, and the operation speed is improved; the parameterized time-frequency distribution construction method effectively reduces the influence of cross terms and side lobes; the
system can estimate and extract multiple PPS
signal components in parallel, and further improves the search efficiency and
global optimal capability of time-frequency
decomposition.