Azimuth multi-beam SAR (synthetic aperture radar) and implementation method and device of SAR

The invention discloses an azimuth multi-beam SAR (synthetic aperture radar) and an implementation method and device of the SAR. The method comprises the steps as follows: the azimuth channel number which meets a first condition and the antenna size which meets a second condition are determined; PRFs (pulse recurrence frequencies) which meet a third condition and a fourth condition are determined; wave potential information of the azimuth multi-beam SAR is acquired on the basis of the third condition and the fourth condition; key parameters of the azimuth multi-beam SAR are calculated on the basis of the wave potential information of the azimuth multi-beam SAR; and when the key parameters of the azimuth multi-beam SAR meet a preset index, conditions that the number of the azimuth channels of the azimuth multi-beam SAR is the azimuth channel number which meets the first condition, the size of the antennas of the azimuth multi-beam SAR is the antenna size which meets the second condition, and the PRFs of the azimuth multi-beam SAR are the PRFs which meet the third condition and the fourth condition are determined. According to the technical scheme of the azimuth multi-beam SAR and the implementation method and device of the SAR, all key parameters of the azimuth multi-beam SAR can be designed reasonably, so that the azimuth multi-beam SAR can be designed effectively.