Optimal theoretical study of the pixel structure and spatio-temporal random noise of uncooled IRFPA

Tao FENG; Wei-Qi JIN; Jun-Jie SI; Hai-Jun ZHANG

doi:10.11972/j.issn.1001-9014.2020.02.002

Journals >Journal of Infrared and Millimeter Waves >Volume 39 >Issue 2 >Page 142 > Article

Journal of Infrared and Millimeter Waves
Vol. 39, Issue 2, 142 (2020)

Optimal theoretical study of the pixel structure and spatio-temporal random noise of uncooled IRFPA

Tao FENG¹, Wei-Qi JIN^1、*, Jun-Jie SI², and Hai-Jun ZHANG³

Author Affiliations

¹School of Optoelectronics, Beijing Institute of Technology, Key Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education of China, Beijing0008, China

²China Airborne Missile Academy，HenanLuoyang471009，China

³North Guangwei Technology Inc，Beijing100089，China

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DOI: 10.11972/j.issn.1001-9014.2020.02.002 Cite this Article

Tao FENG, Wei-Qi JIN, Jun-Jie SI, Hai-Jun ZHANG. Optimal theoretical study of the pixel structure and spatio-temporal random noise of uncooled IRFPA[J]. Journal of Infrared and Millimeter Waves, 2020, 39(2): 142 Copy Citation Text

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Fig. 1. Structure of the microbolometer ^[2]

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Fig. 2. Pixel MEMS architecture （a） single layer，（b） double layers

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Fig. 3. Noise power density of a semiconductor resistor R=1kΩ

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Fig. 4. Signal transfer and readout IC principle diagram of uncooled IRFPA

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Fig. 5. Uncooled IRFPA GWIR0202X1A

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Noise Component	Description	Explanation
σ_T	Frame-to-frame noise	Frame average that fluctuates over time.
σ_TV	Temporal row noise	The part of the row average that fluctuates over time.
σ_TH	Temporal column noise	The part of the column average that fluctuates over time.
σ_TVH	Spatial-temporal random noise	The part of each pixel output that fluctuates randomly over time.
σ_V	Spatial row noise	The part of the row average that differs from the spatial distribution.
σ_H	Spatial column noise	The part of the column average that differs from the spatial distribution.
σ_VH	Spatial random noise	The part of each pixel output that differs from the spatial distribution.

Table 1. Description of seven noise components

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	3D noise component	σ_T	σ_TH	σ_TV	σ_TVH	σ_H	σ_V	σ_VH	σ_SYS
Single-layer pixel	The mean of the NETD component/mK	5.0	15.5	4.9	30.9	3.4	7.2	22.8	42.7
Single-layer pixel	Percentage of noise component to total noise/（ $σ_{X}^{2} / σ_{s y s}^{2}$ ）	1.3%	13.2%	1.3%	52.3%	0.6%	2.8%	28.5%	100%
Double-layer pixel	The mean of the NETD component/mK	3.5	14.6	4.3	21.6	3.2	5.8	20.9	34.5
Double-layer pixel	Percentage of noise component to total noise/（ $σ_{X}^{2} / σ_{s y s}^{2}$ ）	1.0%	17.9%	1.5%	39.2%	0.9%	2.8%	36.7%	100%

Table 2. 3D Noise test results of single-layer and two-layer uncooled IRFPA

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