Research and experiment of InGaAs shortwave infrared imaging system based on FPGA

Ling Ren; Chaobo Min; Jianning Sun; Yan Gu; Feng Yang; Bo Zhu; Jingsheng Pan; Yiliang Guo

doi:10.1117/12.2180226

13 April 2015 Research and experiment of InGaAs shortwave infrared imaging system based on FPGA

Ling Ren, Chaobo Min, Jianning Sun, Yan Gu, Feng Yang, Bo Zhu, Jingsheng Pan, Yiliang Guo

Proceedings Volume 9522, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II; 95221T (2015) https://doi.org/10.1117/12.2180226
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held August-October 2014, 2014, China, China

Abstract

The design and imaging characteristic experiment of InGaAs shortwave infrared imaging system are introduced. Through the adoption of InGaAs focal plane array, the real time image process structure of InGaAs shortwave infrared imaging system is researched. The hardware circuit and image process software of the imaging system based on FPGA are researched. The InGaAs shortwave infrared imaging system is composed of shortwave infrared lens, InGaAs focal plane array, temperature controller module, power supply module, analog-to-digital converter module, digital-to-analog converter module, FPGA image processing module and optical-mechanical structure. The main lock frequency of InGaAs shortwave infrared imaging system is 30MHz. The output mode of the InGaAs shortwave infrared imaging system is PAL analog signal. The power dissipation of the imaging system is 2.6W. The real time signal process in InGaAs shortwave infrared imaging system includes non-uniformly correction algorithm, bad pixel replacement algorithm, and histogram equalization algorithm. Based on the InGaAs shortwave infrared imaging system, the imaging characteristic test of shortwave infrared is carried out for different targets in different conditions. In the foggy weather, the haze and fog penetration are tested. The InGaAs shortwave infrared imaging system could be used for observing humans, boats, architecture, and mountains in the haze and foggy weather. The configuration and performance of InGaAs shortwave infrared imaging system are respectively logical and steady. The research on the InGaAs shortwave infrared imaging system is worthwhile for improving the development of night vision technology.

Citation Download Citation

Ling Ren, Chaobo Min, Jianning Sun, Yan Gu, Feng Yang, Bo Zhu, Jingsheng Pan, and Yiliang Guo "Research and experiment of InGaAs shortwave infrared imaging system based on FPGA", Proc. SPIE 9522, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II, 95221T (13 April 2015); https://doi.org/10.1117/12.2180226

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KEYWORDS

Imaging systems

Indium gallium arsenide

Short wave infrared radiation

Infrared imaging

Shortwaves

Staring arrays

Signal processing

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