Segmented variable-repetition-frequency time sequence design method for ultra-high-resolution satellite borne SAR

The invention relates to a segmented variable-repetition-frequency time sequence design method for an ultra-high-resolution satellite borne SAR. According to scene echo distance migration data, an instantaneous maximum slant span of the scene echo is determined and a range that needs to be met by the total span of all slope ranges in an azimuth; the azimuth in an echo reception period is segmented; lengths of all echo receiving windows of the azimuth as well as starting and termination sampling times are designed; a work repetition frequency matching a time range of the echo receiving window is searched; and then whether the segmented variable-repetition-frequency design result ensures that the echo can be received effectively is verified in a simulation manner; if so, the design is endedand system parameters related to the working time sequence in all periods of the azimuth are outputted; and if not, azimuth segmentation is carried out again until the segmented variable-repetition-frequency design result ens