Real-time measurement method and system for ultrafast space-time-frequency information based on space-time-frequency compression

A real-time measurement method for ultrafast space-time-frequency information based on space-time-frequency compression, comprising:

• generating an ultrafast-pulse optical signal in a to-be-observed physical system;
• performing intensity-modulated spatial encoding on the ultrafast-pulse optical signal, to obtain an encoded ultrafast-pulse optical signal;
• arranging a time-domain series of the encoded ultrafast-pulse optical signal in a horizontal space direction, to obtain a space-time distribution encoding form of the encoded ultrafast-pulse optical signal;
• performing frequency spectral processing on the space-time distribution encoding form of the encoded ultrafast-pulse optical signal, and loading frequency information of each ultrafast pulse on vertical spatial information, to obtain an encoded space-time-frequency synchronized ultrafast-pulse optical signal;
• performing frequency-time delaying on the encoded space-time-frequency synchronized ultrafast-pulse optical signal, to obtain a high-frequency-resolution encoded space-time-frequency synchronized ultrafast-pulse optical signal;
• performing real-time compression and acquisition on the high-frequency-resolution encoded space-time-frequency synchronized ultrafast-pulse optical signal, to obtain compressed encoded data information;
• and
• decompressing and decoding data according to the compressed encoded data information, to obtain space-time-frequency three-domain synchronization information of the ultrafast-pulse optical signal.