The essence of accumulation is to improve signal-to-noise ratio(SNR)for signal detec-tion.The essence of constant false alarm rate(CFAR)is to keep false alarm rate constant and re-duce the pressure of rear processing based on fined detection probability by using adaptive thresh-old instead of fixed threshold.Both are important parts of radar signal processing system.Under the guidance of the idea of software-based radar,this paper studies the accumulation of radar video signals and the real-time problem of CFAR processing.Firstly,this paper gives a simulation model for accumulation and cell average CFAR processing,then analyzes the computing complexity of ac-cumulation and cell average CFAR in detail,and then uses integrated performance primitives(IPP)algorithm library and conventional calculation method to simulate the calculation time of accumula-tion and cell average CFAR processing,finally realizes it through actual software,which shows that under certain conditions,implementing accumulation and CFAR with software can meet the real-time performance.
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