Multispectral scene simulation device and method

Abstract

The invention provides a multispectral scene simulation device. The multispectral scene simulation device comprises a tunable laser, a multi-channel optical composite assembly, a laser beam expanding assembly, a high-temperature black body, a dual-channel illumination assembly and an image modulator, wherein an output spectrum is controlled by controlling the wavelength and output power of laser outputted by the tunable laser, and the spectrum sequentially passes through the multi-channel optical composite assembly, the laser beam expanding assembly, the high-temperature black body and the double-channel illumination assembly to output a light beam with a set aperture and a divergence angle; the light beam with the set aperture and divergence angle is irradiated to the image modulator for spatial light modulation, and multispectral scene simulation is achieved. The invention further provides a multispectral scene simulation method. According to the invention, through multi-channel laser compounding, each laser wavelength and output power are controlled, and multi-band radiation output can be realized. Meanwhile, laser radiation and black body radiation are outputted in a matching mode, spectral distribution curves of different targets and interferences can be simulated, spatial light modulation is conducted on output light beams, and multispectral scene images can be simulated.

Description

technical field [0001] The present invention relates to the technical field of infrared multispectral testing and simulation, and in particular to a multispectral scene simulation device and method. Background technique [0002] Multi-spectral detection technology can obtain more spectral information and has stronger target recognition and anti-interference capabilities, so it is more and more used in aerospace, industrial detection, remote sensing and environmental monitoring and other fields. In order to test this kind of multi-spectral detection equipment and hardware-in-the-loop simulation experiment, it is necessary to develop a corresponding infrared multi-spectral dynamic scene simulator. [0003] Infrared multispectral detection systems are generally divided into point source detection systems and imaging detection systems, which can detect target spectral radiation information and obtain four latitude information of time, space, radiation and spectrum of the measure...

AI Technical Summary

Problems solved by technology

The disadvantage of this existing technology is that although the use of infrared multispectral sensor groups cannot simultaneously achieve high dynamic range and multispectral radiation simulation

Although the prior art uses hardware-in-the-loop simulation tests, it cannot realize the simulation of high dynamic range targets and interference radiation characteristics, and cannot realize the controllable spectral distribution of infrared radiation.

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