Unsupervised classification-based hyperspectral data processing: lossy compression

Cheng, Xiaoyu; Wang, Yueming; Guo, Ruyan; Huang, Junze

doi:10.1007/s11082-018-1686-7

Cited by 13 publications

(2 citation statements)

References 21 publications

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“…The narrow spectral band means that its resolution reaches the nanometer level and moves toward the sub-nanometer level (Wang and Li 2021). The post-spectroscopic optical signal received on the detector is very weak, resulting in the transmission and storage of large volume data is a huge challenge (Hu, Chen et al 2009, Cheng, Wang et al 2018). To accommodate this low radiation, the low noise performance of the readout circuit is particularly important.…”

Section: Introductionmentioning

confidence: 99%

“…The related double sampling (CDS) structure can eliminate low-frequency noise and KTC noise and thus has been widely studied in the field of Hyperspectral IRFPA ROIC. For example, Wang Pan (Wang, Ding et al 2014) used CDS to process the signal in the front stage of the column common module and Huang Zhangcheng (Huang, Huang et al 2018) used 2 sets of capacitive samples for 1024 × 512 readout circuit. Yi Zhuo (Zhuo, Lu et al 2021) proposed an intra-image single capacitor CDS structure and analyzed the noise.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%