This paper is presented to resolve the moving infrared target detection problem under the condition of lowSNR. The scheme of multi-frame accumulation is often adopted in low SNR infrared target detection

but for moving low SNRtarget

this simple accumulation scheme maybe degrades greatly. In this paper

a detectlon algorithm based on morphologicaldilation before accumulation and tracking before detection is prond. The dilation operation enables the energy 0f the sametarget in different frames can be accumulated effectively in spite of the movement of target

thus we can reach the aim of enhancing the target. A preprocessing algorithm using wavelet transform is also adopted to remove the correlation of l/f noise inparalle1 scanned infrared image. The whole algorithm is well analyzed and simulated with infrared image apuence. A high performance is reached and the experimental result indicates that the algorithm can effectively detect the moving target withSNR = 2.