In order to study the blasting vibration characteristics of single-base gun propellant,blast experiments of single-base gun propellant and emulsion explosive were conducted.The attenuation law and energy spectrum distribution of the two materials were compared and analyzed.Sadowski formula and HHT method were used to analyze the experimental vibration signals to obtain the blasting vibration attenuation formula,the equivalence coefficient,and the marginal energy spectrum.The results show that the decay trend of peak velocity of single-base gun propellant and emulsion explosive are similar.But the vibration velocity of single direction and vector sum of the single-base gun propellant is lower than that of the emulsion explosive.The average equivalence coefficient of the single-base gun propellant was only 0.43 in present study,indicating that the blasting vibration effect of unit single-base gun propellant is much weaker than that of the emulsion explosive.In addition,the vibration energy of both the single-base gun propellant and the emulsion explosive was mainly distributed between 0 to 50 Hz.With the increase of charge weight,the blasting vibration energy distribution of emulsion explosive barely changed,whereas the main frequency of the vibration signal of the single-base gun propellant is concentrated within 15~25 Hz.Even though the blasting vibration energy of single-base gun propellant is lower than that of emulsion explosive,the difference of total energy between single-base gun propellant and emulsion explosive decreases with the increase of charge weight.In addition,the energy ratio of single-base gun propellant in 0~10 Hz fluctuates with the charge weight and test distance.