Abstract:The small target detection in the complex sea context is a key technology for the sea search and surveillance series radar. The traditional radar system cannot guarantee reliable detection performance when encountering with these small targets. Based on the analysis of the scattered power characteristics of the sea clutter in complex sea conditions, a technical way is proposed to improve the performance of small targets in complex sea conditions by combining radar system design and sea surface small target detection technology, and ensure that under the low false alarm probability, small targets can be detected effectively and reliably on the sea.