Method, system, device and storage medium for non-contact velocity estimation of a moving target

A system for non-contact velocity estimation of a moving target, comprising:

• a signal processing module, a dynamic optimal selection module and a moving velocity calculation module, wherein
• the signal processing module is used for acquiring channel state information or other information that includes motion information of a target through at least two receiving devices, eliminating a random phase offset of the channel state information or other information to acquire newly constructed signals, and performing a denoising and filtering process on the newly constructed signals;
• the dynamic optimal selection module is used for identifying a motion state of the target according to the newly constructed signals, and dynamically selecting two optimal receiving devices if the target is moving;
• and
• the moving velocity calculation module is used for respectively extracting a Doppler frequency shift caused by motion of the target from the two selected optimal receiving devices, and calculating a velocity of the target according to the Doppler frequency shifts, wherein the velocity includes a speed and a heading.