Abstract:Burst signal detection can help improve the utilization of communication lines or provide an information basis for monitoring,attacking,and interfering lines.Existing detection algorithms often require prior knowledge such as signal templates,and have high time complexity.This paper analyzes the characteristics of the constellation diagram of Maritime satellite TDMA signals with unique code structure,studies the characteristics of phase difference between unique code symbols,and proposes a burst detection algorithm based on the distance of unique code symbols.It does not require the use of signal templates,and the calculation complexity of statistics is low.Experiments show that the algorithm can effectively detect the burst signal,and can achieve better detection results under the condition of low signal noise ratio.