A new method of relative radiometric calibration for hyperspectral imaging based on skylight monitor

Zhou, Shiyao; Zhang, Dong; Liu, Honglin; Wang, Yueming

doi:10.1007/s11082-019-2092-5

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…It acquires continuous, narrow-band image data with a high spectral resolution as shown in Figure 1(a). On one hand, it "captures" most of the subtle changes in the spectrum of a feature, which can be used to identify, classify, or quantitatively analyze substances [2,3]. On the other hand, the light radiation dispersed and focused on hyperspectral infrared focal plane arrays (IRFPA), presented in Figure 1(b), is extremely low, resulting in high requirement for low noise.…”

Section: Introductionmentioning

confidence: 99%

CDS With Adjustable Interval for Low Noise Hyperspectral Infrared Focal Plane Readout circuits

Ding

Chen

et al. 2023

Preprint

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Low noise is a key requirement of Readout Integrated Circuit (ROIC) in hyperspectral application for its low radiation. The Correlated Double Sampling (CDS) technology is commonly used to suppress the effect of noise. In this paper, CDS is improved by adjusting the time interval between the clamp and sample hold (SH), which can filter low frequency noise flexibly. A ROIC input stage integrated with low-noise Capacitive trans-impedance amplifiers (CTIA) and CDS with adjustable interval (AICDS) is designed. The SPECTRE simulation indicates that, by extending the CDS reset time, the simulation result is consistent with the analysis. The number of noise electrons reaches 32.59 e-, which is better than 56.7 e- without extending the reset time. The design of AICDS can improve the noise performance of hyperspectral ROIC, and can be widely used.

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Section: Introductionmentioning

confidence: 99%

CDS With Adjustable Interval for Low Noise Hyperspectral Infrared Focal Plane Readout circuits

Ding

Chen

et al. 2023

Preprint

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“…Hyperspectral remote sensing (HRS) is a multidimensional information acquisition technique that combines imaging and spectral technologies to simultaneously detect two-dimensional spatial and one-dimensional spectral information of a target (Chen, Du et al 2015). It acquires continuous, narrow-band image data with a high spectral resolution, thus "capturing" most of the subtle changes in the spectrum of a feature (Zhou, Zhang et al 2019). Its application in the shortwave infrared (SWIR) spectrum has been widely concerned.…”

Section: Introductionmentioning

confidence: 99%

Reset Time Extended CDS for low noise hyperspectral infrared focal plane readout circuits

Ding

Chen

et al. 2022

Preprint

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Low noise is a significant performance requirement of Hyperspectral Shortwave Infrared Focal Plane Arrays Readout Circuit (ROIC) for its low radiation. And the current Correlated Double Sampling (CDS) technology for noise reduction needs to be further improved. The mechanism of extended reset time CDS, which has an impact on noise, is analyzed; By establishing the "first-order low-pass filter, delay-subtractor, sample-hold" model, the output noise power spectral density of image pixel ROIC as a function of CDS extended reset time is analyzed. To verify the analysis, a pixel integrated with low-noise Capacitive trans-impedance amplifiers (CTIA) and adjustable reset time CDS is designed. By extending the CDS reset time, the simulation result is consistent with the analysis. The number of noise electrons reaches 24.42e-, which is better than 50.11e-without CDS and 34.45e-without extending the reset time. The design of Reset Time Extended CDS can improve the noise performance of hyperspectral readout circuits, and can be widely used.

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A broadband spherical prism imaging spectrometer based on a single integrated module

Zhou

Wang

2021

Opt Quant Electron

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A new method of relative radiometric calibration for hyperspectral imaging based on skylight monitor

Cited by 3 publications

References 37 publications

CDS With Adjustable Interval for Low Noise Hyperspectral Infrared Focal Plane Readout circuits

CDS With Adjustable Interval for Low Noise Hyperspectral Infrared Focal Plane Readout circuits

Reset Time Extended CDS for low noise hyperspectral infrared focal plane readout circuits

A broadband spherical prism imaging spectrometer based on a single integrated module

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