Acousto-optic modulator-based man and satellite ranging single-photon echo simulation ground detection system

The invention discloses a human and satellite ranging single-photon echo simulation ground detection system based on an acousto-optic modulator, and the system carries out the high-precision pulse cutting of continuous laser through the acousto-optic modulator, and achieves the modulation of the pulse width, time delay and intensity of echo pulses through the cooperation of a programmable control module and an adjustable attenuator. The device is used for simulating echo photon data under the conditions of laser pulse intensity, target distance, echo signal statistical waveform pulse width and the like in a long-distance single-photon ranging system, and continuous detection of single-photon echoes of a fixed or dynamic target is achieved. And the system performance meets the high-precision simulation requirements that the line width is 0.2 nm and the jitter time is less than 20 ns. By using the system, a simulation database for human and satellite ranging sub-photon echo detection can be established for quan