TDI CMOS image sensor for Earth Observation

Pratlong, Jérôme; Jerram, Paul; Tsiolis, Georgios; Arkesteijn, V.J.; Donegan, Paul; Korthout, Laurens

doi:10.1117/12.2536152

Cited by 5 publications

(5 citation statements)

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“…This implies that each quarter of line is dedicated to the conversion of a 1 PAN and 1 MS as shown Table 4. More information on the implementation of this device can be found in [10]. The pixel, Figure 21, is a 4 phases (P1…P4) CCD structure, with gated anti-blooming (AB).…”

Section: Tdi Charge Domainmentioning

confidence: 99%

Innovations in visible imaging technology to support future space missions

Pratlong

2023

International Conference on Space Optics — ICSO 2022

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Teledyne e2v is continuing to invest in CCD and CMOS sensors innovation for higher performance in the visible, soft X-Ray and NIR parts of the spectrum for space applications. Space missions are becoming ever more complex and Teledyne e2v, to support this growth, has developed technologies to improve the intrinsic performance of the detector, new features for low noise or data stream approach and improved interfaces to ease integration at system level. As Teledyne also covers commercial and industrial markets it is possible to take advantages of the state-of-the-art development made in those markets to enhance detector performance for space with limited risk and shorter R&D development time.This paper covers the latest innovations for CCD and CMOS technologies and in particular the large area and low noise platform (CIS300 family) and TDI charge domain CIS125. In the last section an overview on the detector electrical interface innovation is given.

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Section: Tdi Charge Domainmentioning

confidence: 99%

Innovations in visible imaging technology to support future space missions

Pratlong

2023

International Conference on Space Optics — ICSO 2022

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“…L S S x , S y , S z =   cos S y cos(S z ) cos S y sin(S z ) −sin S y sin(S x )sin S y cos(S z ) − cos(S x )sin(S z ) cos(S x )cos(S z ) + sin(S x )sin S y sin(S z ) sin(S x )cos S y cos(S x )sin S y cos(S z ) + sin(S x )sin(S z ) cos(S x )sin S y sin(S z ) − sin(S x )cos(S z ) cos(S x )cos S y   (5) Considering that the assembly-error angle of S x , S y , S z is small, and that the higher order infinite minor term can be ignored, it can be simplified as L 1 .…”

Section: Analysis Of the Optical Coupling In The 2d Compensationmentioning

confidence: 99%

“…The charge transfer driving technology is used to match the charge transfer speeds with the moving line speed of the scene, thus compensating for the the image motion in a dynamic balance. In this compensation method, the 45 • front mirror has a large size, and TDI is a linear array detector, which requires the integration time of TDI CCD to match the image motion velocity [5][6][7][8]. Imaging of the TDI CCD camera must be performed through the push-broom or whisk-broom system, and the operator cannot keep the visual axis pointing at and continuously monitoring the target.…”

Section: Introductionmentioning

confidence: 99%

Research on 2D Image Motion Compensation for a Wide-Field Scanning Imaging System with Moving Base

Chang,

Chen,

Cao

et al. 2023

Photonics

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The wide-field imaging system carried on a high-altitude or near-space vehicle takes high-resolution images of the ground to measure and map targets. With the improvement of imaging resolution and measurement accuracy, the focal length of the wide-field imaging system is getting longer. The requirement for image motion compensation (IMC) accuracy is getting higher, and the influence of optical path coupling is increasing within the process of two-dimensional (2D) IMC. To further improve the IMC accuracy of the wide-field imaging system, an innovative IMC method is first proposed in this paper. The method is based on the 2D motion of the scanning platform and secondary mirror. Secondly, to solve the optical coupling problem in the process of 2D IMC, the coupling phenomenon is analyzed. The coupling relationships between 2D scanning motion, 2D secondary mirror motion and image motion is derived from the compensation process. A complete 2D IMC model is established, and a 2D IMC method, including an optical path decoupling correct regulator (ODCR), is designed. Finally, the method is verified in laboratory and field flight tests. The results show that the proposed method can effectively correct the coupling error of the optical path in the process of IMC and achieve high-resolution 2D IMC. When the scanning speed is 60°/s and the exposure time is 2 ms, the accuracy of the 2D IMC is up to 0.57pixels (RMS) in the pitch direction, and 0.46 pixels (RMS) in the roll direction.

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“…Therefore, this register combines a low CTI, a high FWC, and a low dark level. For comparison, state-of-the-art characteristics of CCD-on-CMOS devices are a CTI of 1 × 10 −5 , a FWC of 30 ke − , and a dark current of 3.7 nA/cm 2 [17].…”

Section: Introductionmentioning

confidence: 99%

Development of a Charge-Multiplication CMOS Image Sensor Based on Capacitive Trench for Low-Light-Level Imaging

Marcelot,

Morvan,

Salih Alj

et al. 2023

Sensors

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This paper presents an electron multiplication charge coupled device (EMCCD) based on capacitive deep trench isolation (CDTI) and developed using complementary metal oxide semiconductor (CMOS) technology. The CDTI transfer register offers a charge transfer inefficiency lower than 10−4 and a low dark current o 0.11nA/cm2 at room temperature. In this work, the timing diagram is adapted to use this CDTI transfer register in an electron multiplication mode. The results highlight some limitations of this device in such an EM configuration: for instance, an unexpected increase in the dark current is observed. A design modification is then proposed to overcome these limitations and rely on the addition of an electrode on the top of the register. Thus, this new device preserves the good transfer performance of the register while adding an electron multiplication function. Technology computer-aided design (TCAD) simulations in 2D and 3D are performed with this new design and reveal a very promising structure.

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TDI CMOS image sensor for Earth Observation

Cited by 5 publications

References 0 publications

Innovations in visible imaging technology to support future space missions

Innovations in visible imaging technology to support future space missions

Research on 2D Image Motion Compensation for a Wide-Field Scanning Imaging System with Moving Base

Development of a Charge-Multiplication CMOS Image Sensor Based on Capacitive Trench for Low-Light-Level Imaging

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