Verification of TDI technology in digital domain for IRST

Wei Li; Meng Zhu; Feng Ma; Dong Wang

doi:10.1117/12.2664923

4 April 2023 Verification of TDI technology in digital domain for IRST

Wei Li, Meng Zhu, Feng Ma, Dong Wang

Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 126172K (2023) https://doi.org/10.1117/12.2664923
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China

Abstract

Compared with the charge domain TDI (time delay integration) type image sensor, the surface formation image sensor, using the digital domain TDI technology, has the characteristics of high system integration and flexible use, and has attracted the attention of relevant research fields in recent years. In the digital domain TDI sensor, the signal is accumulated after differential amplification and analog-to-digital conversion. This method does not consider the depth of the charge trap to improve the practicality of the image system. Infrared search and tracking system (IRST) has an important application value in modern war, and the application scope of surface formation sensor in IRST is also gradually expanding. To verify the feasibility and characteristics of digital domain TDI technology in IRST, analyze and test. Through the working principle of the digital domain TDI face array image sensor analysis, complete the TDI algorithm design and simulation, to verify its feasibility. Based on FPGA platform to study the effect of TDI algorithm on image effect of imaging system. The verification results show that the image system based on the digital domain TDI technology can improve the dynamic range of the image, make the image has excellent signal-to-noise ratio, and can flexibly meet different requirements. Experiments show that the image data based on digital domain TDI is transmitted to the back-end system for target detection and other processing, which can achieve higher detection probability and recognition accuracy.

Citation Download Citation

Wei Li, Meng Zhu, Feng Ma, and Dong Wang "Verification of TDI technology in digital domain for IRST", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 126172K (4 April 2023); https://doi.org/10.1117/12.2664923

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KEYWORDS

Image processing

Infrared search and track

Sensors

Image sensors

Field programmable gate arrays

CMOS sensors

Computer simulations

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