Target simulator based on digital micro-mirror device

Abstract

The invention discloses a target simulator based on a digital micro-mirror device, the target simulator comprises: host computer control software, a driving circuit, a digital micro-mirror device, anillumination optical system, a projection objective lens, wherein the host computer control software communicates with a drive control circuit via a USB1.1 and sends commands and images; the drive circuit controls the operation of a digital micro-mirror chip; the digital micro-mirror device modulates the incident light through the micro-mirror mechanical turnover to achieve an imaging effect; theillumination optical system provides a light source for the digital micro-mirror chip; the projection objective lens projects a simulated image into a tested system. The target simulator has small volume, light weight, high flexibility, high resolution, high gray level and high frame frequency, supports visible light band gray scale and color image simulation, and can be applied to various semi-physical simulation experiments.

Description

technical field [0001] The invention relates to the field of visible light target simulation, in particular to a target simulator based on a digital micromirror device. Background technique [0002] Usually, there are three methods for ground experiment testing of some equipment: the first is image injection test; the second is field field test; the third is half-physical simulation test using target simulator. [0003] Because the image-injection evaluation test is difficult to accurately simulate the actual use situation, and it is impossible to test the performance of modules such as optical systems at the same time, and the field test device is complex, expensive, and difficult to debug. So we need a target simulator based on hardware-in-the-loop simulation. [0004] The target simulator based on the traditional display method needs to perform D / A conversion because the output is carried out in an analog way, which will generate noise itself. The optical system of targ...

AI Technical Summary

Problems solved by technology

[0004] The target simulator based on the traditional display method needs to perform D / A conversion because the output is performed in an analog manner, which will generate noise itself

The optical system of target simulator based on liquid crystal light valve is complicated, and the transmissive display will limit the brightness

In recent years, the emerging LCOS-based target simulators have poor black-and-white contrast, and the three-chip LCOS optical engine is large in size, and the cost is high in large-field-of-view display scenarios

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