Improved CFAR Method Based on Sea Clutter Scene Discrimination

When shore-based radar detects the sea, sea clutter is affected by many factors, which leads to its complexity and variability. The clutter data of near-shore sea area is more complex than that of long-distance sea area. Based on this, through the scene discrimination of complex marine environment, the sea scene is divided into multiple regions, and then the amplitude probability distribution type of sea clutter in each region is judged. Different constant false alarm detectors are used for different distribution types to detect targets and improve performance.The results show that the detection performance of multiple CFAR detectors is better than that of single CFAR detector according to the scene discrimination results, and the detection performance of CFAR is improved from the perspective of background.