Detection imaging optical system based on compressed state light field

Abstract

The invention discloses a detection imaging optical system based on a compressed state light field, and relates to the field of target detection, imaging and distance measurement, the detection imaging optical system comprises a laser, an optical emission system and an optical receiving system, the optical receiving system comprises a phase-sensitive noise-free amplification module and a detector, the optical emission system uniformly irradiates the emitted laser beam to a remote target object; signal light carrying object information is received by the optical receiving system, and then compressed light is injected into the signal light; then the signals enter the phase-sensitive noise-free amplification module; and finally, the detector receives the signal light subjected to compression light injection and phase-sensitive noise-free amplification so as to realize optical imaging. By adopting the technical scheme of the invention, the system has the characteristics of high image signal-to-noise ratio, high spatial resolution, high spectral resolution, high reliability, stable performance and low power consumption.

Description

technical field [0001] The invention belongs to the technical field of target detection, and in particular relates to a detection and imaging optical system for target detection, imaging and distance measurement based on a squeezed light field. Background technique [0002] Optical or optoelectronic systems have long been used in a variety of sensing applications, including but not limited to object detection, imaging, and distance measurement. The target detection optics system includes a transmit module for illuminating the target area, and a receive module for detecting return signals representing the presence or absence of objects in the target area. [0003] Some object detection systems use a laser beam of coherent light in either the transmit module or the receive module, or both. These systems are collectively known as lidar or laser detection and ranging (LADAR) systems. For example, in the simplest lidar target detection system, the presence of the target is dete...

AI Technical Summary

Problems solved by technology

In addition, if the target area contains other light sources or thermal radiation (collectively referred to as "noise sources"), it can be difficult to distinguish the component of the return signal containing the light reflected from the target from the component of the noise, because the signal-to-noise ratio of the return beam is very low

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