Method and system for measuring detonation velocity of trace explosive

The invention discloses a method and system for measuring the detonation velocity of a trace explosive, and relates to the technical field of detonation velocity measurement, the method comprises the following steps: controlling a detonation velocity measurement system to emit terahertz emission waves towards the direction of a trace explosive sample to be measured, and the emitted terahertz emission waves are vertical to the surface area of the trace explosive sample to be measured; controlling a detonation velocity measuring system to detonate the to-be-measured trace explosive sample, and acquiring a terahertz interference signal output after the to-be-measured trace explosive sample explodes from the detonation velocity measuring system; analyzing according to the terahertz interference signal to obtain a corresponding terahertz Doppler frequency shift, and calculating by using the terahertz Doppler frequency shift to obtain the detonation velocity of the trace explosive sample to be measured; compared wi