Radar small/mini target detection technology in strong clutter environment

A method of radar small/mini target wavelet transform and principal component analysis in strong clutter environment is suggested. Focusing on the situation that the small/mini target in the strong clutter environment is swamped by clutter, traditional constant false-alarm detection method limited by theory limit cannot effectively detect target, the transform domain, wavelet coefficient and principal component decomposition can realise the separation of radar small/mini target signal from the clutter signal, so as to achieve clutter suppression and small/mini target detection. The test shows the radar small/mini target detection based on wavelet transform is limited by wavelet function, decomposition layers and adaptive threshold; principal component decomposition can adapt to the signal of different radar systems, and types with good adaptability to algorithm can effectively suppress clutter and improve average signal-to-noise ratio by 7 dB.