以机载预警雷达实测海杂波数据的统计特性为基础，系统分析了抑制海杂波的方法，涉及到波束内的信号检测方法和帧间积累方法两方面。信号检测方法针对海杂波中的 Bragg 散射和 Whitecap 散射分量，处理方法包括时域信号检测和频域信号检测。帧间积累方法主要针对海杂波分量中的 Burst 散射分量，采用的方法包括非相参的二进制积累、相参积累以及检测前跟踪。通过系统分析不同海杂波环境下各种方法的选择和使用条件，为机载预警雷达海杂波背景下的信号处理领域提供了重要的依据。%Based on the statistical properties of real sea clutter data from airborne early warning radar, the techniques of sea clutter suppression are analysed,which include beam-in signal detection algorithms and scan-to-scan integration methods.The beam-in processing algorithms aim at suppressing the Bragg scatters and whitecap scatters of the sea clutter.The algorithms involve time-domain signal detection and frequency-domain signal detection.Scan-to-scan integration methods aim at suppressing the burst scatter of sea clutter. The methods involve binary integration,coherent integration and track-before-detection.The systemic analy-sis of detection methods and configuration conditions provides the important basis for the sea clutter signal processing in airborne early warning radar.
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