The Experts below are selected from a list of 21282 Experts worldwide ranked by ideXlab platform
Dennis C Reuter - One of the best experts on this subject based on the ideXlab platform.
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landsat 9 tirs 2 performance results based on Subsystem Level testing
SPIE Remote Sensing, 2018Co-Authors: Aaron Pearlman, Joel Mccorkel, Matthew Montanaro, Boryana Efremova, Brian Wenny, Allen Lunsford, A A Simon, Jason Hair, Dennis C ReuterAbstract:Landsat 9 is the next in the series of Landsat satellites and has a complement of two pushbroom imagers: Operational Land Imager-2 (OLI-2) that samples the solar reflective spectrum with nine channels and Thermal Infrared Sensor-2 (TIRS-2) samples the thermal infrared spectrum with two channels. The first builds of these sensors, OLI and TIRS, were launched on Landsat 8 in 2013 and Landsat 9 is expected to launch in December 2020. TIRS-2 is designed and built to continue the Landsat data record and satisfy the needs of the remote sensing community. There are two sets of requirements considered for planning the component, Subsystem and instrument Level tests for TIRS-2: performance requirements and Special Calibration Test Requirements (SCTR). The performance requirements specify key spectral, spatial, radiometric, and operational parameters of TIRS-2 while the SCTRs specify parameters of how the instrument is tested. Several requirements can only be verified at the instrument Level, but many performance metrics can be assessed earlier in prelaunch testing at the Subsystem Level. A test program called TIRS Imaging Performance and Cryoshell Evaluation (TIPCE) was developed to characterize TIRS-2 spectral, spatial, and scattered-light rejection performance at the telescope and detector Subsystem Level. There were three thermal vacuum campaigns in TIPCE that occurred from November 2017 to March 2018. This work shows results of TIPCE data analysis which provide confidence that key requirements will be met at instrument Level with a few minor waivers. A full complement of performance testing will be done at the TIRS-2 instrument Level for final verification in late 2018 through Spring 2019.
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landsat 9 thermal infrared sensor 2 Subsystem Level spectral test results
International Geoscience and Remote Sensing Symposium, 2018Co-Authors: Boryana Efremova, Aaron Pearlman, Joel Mccorkel, Matthew Montanaro, Allen Lunsford, Michael Hickey, Dennis C ReuterAbstract:Results from the Thermal Infrared Sensor 2 (TIRS-2) prelaunch spectral characterization at telescope and detector Subsystem Level are presented. The derived relative spectral response (RSR) shape is expected to be very similar to the instrument-Level spectral response and provides an initial estimate of the RSR and its differences to the component-Level RSR measurements. Such differences were observed at TIRS-1 and are likely a result of angular dependence of the spectral response of the detector. The Subsystem RSR measurements also provide an opportunity for a preliminary assessment of the spectral requirements. Final requirements verification will be performed at future thermal vacuum environmental testing with the fully assembled TIRS-2 instrument.
Chenming Hu - One of the best experts on this subject based on the ideXlab platform.
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evaluation of nc finfet based Subsystem Level logic circuits
IEEE Transactions on Electron Devices, 2019Co-Authors: Pin Su, Chenming HuAbstract:This paper examines metal–ferroelectric–insulator–semiconductor negative-capacitance FinFET (NC-FinFET) based VLSI Subsystem-Level logic circuits. For the first time, with the aid of a short-channel NC-FinFET compact model, we confirm the functionality and evaluate the standby-power/switching-energy/delay performance of large logic circuits (e.g., dynamic 4-bit Manchester carry-chain adder and the formal hierarchical 32-bit carry-look-ahead adder) employing 14-nm ultra-low-power NC-FinFETs. Our study indicates that the inverse V ds-dependence of threshold voltage ( V T), also known as the negative drain-induced barrier lowering, of negative-capacitance field-effect transistor is not only acceptable but also beneficial for the speed performance of both the static and pass-transistor logic (PTL) circuits, especially for the PTL at low V DD.
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Evaluation of NC-FinFET Based Subsystem-Level Logic Circuits Using SPICE Simulation
2018 IEEE SOI-3D-Subthreshold Microelectronics Technology Unified Conference (S3S), 2018Co-Authors: Pin Su, Chenming HuAbstract:This work examines the metal-ferroelectric-insulator-semiconductor (MFIS) negative-capacitance FinFET (NC-FinFET) based VLSI Subsystem-Level logic circuits. With the aid of a short-channel NC-FinFET compact model, we confirm the functionality and determine the standby-power/switching-energy/delay performance of logic circuits (5-stage inverter and 4-bit Manchester carry-chain (MCC) adder) employing 14nm ULP NC-FinFETs versus FinFETs. We show that the inverse Vds-dependency of threshold voltage (VT), also known as the negative DIBL, of NCFET is not only acceptable but also beneficial for the speed performance of both the static and pass-transistor logic (PTL) circuits, especially for the PTL at low VDD.
Pin Su - One of the best experts on this subject based on the ideXlab platform.
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evaluation of nc finfet based Subsystem Level logic circuits
IEEE Transactions on Electron Devices, 2019Co-Authors: Pin Su, Chenming HuAbstract:This paper examines metal–ferroelectric–insulator–semiconductor negative-capacitance FinFET (NC-FinFET) based VLSI Subsystem-Level logic circuits. For the first time, with the aid of a short-channel NC-FinFET compact model, we confirm the functionality and evaluate the standby-power/switching-energy/delay performance of large logic circuits (e.g., dynamic 4-bit Manchester carry-chain adder and the formal hierarchical 32-bit carry-look-ahead adder) employing 14-nm ultra-low-power NC-FinFETs. Our study indicates that the inverse V ds-dependence of threshold voltage ( V T), also known as the negative drain-induced barrier lowering, of negative-capacitance field-effect transistor is not only acceptable but also beneficial for the speed performance of both the static and pass-transistor logic (PTL) circuits, especially for the PTL at low V DD.
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Evaluation of NC-FinFET Based Subsystem-Level Logic Circuits Using SPICE Simulation
2018 IEEE SOI-3D-Subthreshold Microelectronics Technology Unified Conference (S3S), 2018Co-Authors: Pin Su, Chenming HuAbstract:This work examines the metal-ferroelectric-insulator-semiconductor (MFIS) negative-capacitance FinFET (NC-FinFET) based VLSI Subsystem-Level logic circuits. With the aid of a short-channel NC-FinFET compact model, we confirm the functionality and determine the standby-power/switching-energy/delay performance of logic circuits (5-stage inverter and 4-bit Manchester carry-chain (MCC) adder) employing 14nm ULP NC-FinFETs versus FinFETs. We show that the inverse Vds-dependency of threshold voltage (VT), also known as the negative DIBL, of NCFET is not only acceptable but also beneficial for the speed performance of both the static and pass-transistor logic (PTL) circuits, especially for the PTL at low VDD.
Boryana Efremova - One of the best experts on this subject based on the ideXlab platform.
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landsat 9 thermal infrared sensor 2 spectral response test updates and perspective
International Geoscience and Remote Sensing Symposium, 2019Co-Authors: A Pearlman, Joel Mccorkel, Boryana Efremova, A A Simon, A W Lunsford, D C ReuterAbstract:The Thermal Infrared Sensor 2 (TIRS-2) that will fly aboard Landsat 9 has undergone pre-launch spectral characterization to demonstrate that its spectral response requirements will be met with few waivers. The test was conducted both at the Subsystem Level and, after upgrading the test setup and improving the alignment methodology, at instrument-Level as well. This work reviews these upgrades and alignment methodology that contributed to a reduction in spectral response uncertainties to a relatively small value relative to the overall TIRS-2 radiometric uncertainty requirements. The spectral response results show an increase in signal to noise ratio and reference detector stability from Subsystem-Level to instrument-Level measurements. Spectral response testing is part of a comprehensive pre-launch test program that ensures TIRS-2 will achieve the performance necessary for a variety of environmental applications.
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landsat 9 tirs 2 performance results based on Subsystem Level testing
SPIE Remote Sensing, 2018Co-Authors: Aaron Pearlman, Joel Mccorkel, Matthew Montanaro, Boryana Efremova, Brian Wenny, Allen Lunsford, A A Simon, Jason Hair, Dennis C ReuterAbstract:Landsat 9 is the next in the series of Landsat satellites and has a complement of two pushbroom imagers: Operational Land Imager-2 (OLI-2) that samples the solar reflective spectrum with nine channels and Thermal Infrared Sensor-2 (TIRS-2) samples the thermal infrared spectrum with two channels. The first builds of these sensors, OLI and TIRS, were launched on Landsat 8 in 2013 and Landsat 9 is expected to launch in December 2020. TIRS-2 is designed and built to continue the Landsat data record and satisfy the needs of the remote sensing community. There are two sets of requirements considered for planning the component, Subsystem and instrument Level tests for TIRS-2: performance requirements and Special Calibration Test Requirements (SCTR). The performance requirements specify key spectral, spatial, radiometric, and operational parameters of TIRS-2 while the SCTRs specify parameters of how the instrument is tested. Several requirements can only be verified at the instrument Level, but many performance metrics can be assessed earlier in prelaunch testing at the Subsystem Level. A test program called TIRS Imaging Performance and Cryoshell Evaluation (TIPCE) was developed to characterize TIRS-2 spectral, spatial, and scattered-light rejection performance at the telescope and detector Subsystem Level. There were three thermal vacuum campaigns in TIPCE that occurred from November 2017 to March 2018. This work shows results of TIPCE data analysis which provide confidence that key requirements will be met at instrument Level with a few minor waivers. A full complement of performance testing will be done at the TIRS-2 instrument Level for final verification in late 2018 through Spring 2019.
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landsat 9 thermal infrared sensor 2 Subsystem Level spectral test results
International Geoscience and Remote Sensing Symposium, 2018Co-Authors: Boryana Efremova, Aaron Pearlman, Joel Mccorkel, Matthew Montanaro, Allen Lunsford, Michael Hickey, Dennis C ReuterAbstract:Results from the Thermal Infrared Sensor 2 (TIRS-2) prelaunch spectral characterization at telescope and detector Subsystem Level are presented. The derived relative spectral response (RSR) shape is expected to be very similar to the instrument-Level spectral response and provides an initial estimate of the RSR and its differences to the component-Level RSR measurements. Such differences were observed at TIRS-1 and are likely a result of angular dependence of the spectral response of the detector. The Subsystem RSR measurements also provide an opportunity for a preliminary assessment of the spectral requirements. Final requirements verification will be performed at future thermal vacuum environmental testing with the fully assembled TIRS-2 instrument.
Aaron Pearlman - One of the best experts on this subject based on the ideXlab platform.
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landsat 9 tirs 2 performance results based on Subsystem Level testing
SPIE Remote Sensing, 2018Co-Authors: Aaron Pearlman, Joel Mccorkel, Matthew Montanaro, Boryana Efremova, Brian Wenny, Allen Lunsford, A A Simon, Jason Hair, Dennis C ReuterAbstract:Landsat 9 is the next in the series of Landsat satellites and has a complement of two pushbroom imagers: Operational Land Imager-2 (OLI-2) that samples the solar reflective spectrum with nine channels and Thermal Infrared Sensor-2 (TIRS-2) samples the thermal infrared spectrum with two channels. The first builds of these sensors, OLI and TIRS, were launched on Landsat 8 in 2013 and Landsat 9 is expected to launch in December 2020. TIRS-2 is designed and built to continue the Landsat data record and satisfy the needs of the remote sensing community. There are two sets of requirements considered for planning the component, Subsystem and instrument Level tests for TIRS-2: performance requirements and Special Calibration Test Requirements (SCTR). The performance requirements specify key spectral, spatial, radiometric, and operational parameters of TIRS-2 while the SCTRs specify parameters of how the instrument is tested. Several requirements can only be verified at the instrument Level, but many performance metrics can be assessed earlier in prelaunch testing at the Subsystem Level. A test program called TIRS Imaging Performance and Cryoshell Evaluation (TIPCE) was developed to characterize TIRS-2 spectral, spatial, and scattered-light rejection performance at the telescope and detector Subsystem Level. There were three thermal vacuum campaigns in TIPCE that occurred from November 2017 to March 2018. This work shows results of TIPCE data analysis which provide confidence that key requirements will be met at instrument Level with a few minor waivers. A full complement of performance testing will be done at the TIRS-2 instrument Level for final verification in late 2018 through Spring 2019.
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landsat 9 thermal infrared sensor 2 Subsystem Level spectral test results
International Geoscience and Remote Sensing Symposium, 2018Co-Authors: Boryana Efremova, Aaron Pearlman, Joel Mccorkel, Matthew Montanaro, Allen Lunsford, Michael Hickey, Dennis C ReuterAbstract:Results from the Thermal Infrared Sensor 2 (TIRS-2) prelaunch spectral characterization at telescope and detector Subsystem Level are presented. The derived relative spectral response (RSR) shape is expected to be very similar to the instrument-Level spectral response and provides an initial estimate of the RSR and its differences to the component-Level RSR measurements. Such differences were observed at TIRS-1 and are likely a result of angular dependence of the spectral response of the detector. The Subsystem RSR measurements also provide an opportunity for a preliminary assessment of the spectral requirements. Final requirements verification will be performed at future thermal vacuum environmental testing with the fully assembled TIRS-2 instrument.
