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Increasing the performance of arbitrary waveform generators using periodic sigma-delta modulated streams
2000
IEEE Transactions on Instrumentation and Measurement
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This paper describes a new method to increase the performance of existing arbitrary waveform generators (AWG's). ...
By encoding the digital words using sigma-delta (61) techniques, it is possible to decrease the noise floor in a narrow band while keeping the same memory requirements. ...
Fig. 21 . 21 Dynamic calibration using subsampling. The sample-and-hold circuit (S/H) is clocked N +1 times slower than the AWG, which allows the measurement at low speed of a high-speed AWG. ...
doi:10.1109/19.836332
fatcat:uhqr4gkzejcg3o7qjuduzguv3m
Development of Frequency Discriminated Simulative Target Generator Based on DRFM for Radar System Performance Evaluation
2011
Journal of the Korean Institute of Electromagnetic Engineering and Science
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Simulative target generators are needed for testing and calibrating various radar systems. ...
This paper proposes a novel architecture for controlling the digital RF memory so it continually writes ADC data to the memory and reads it for the DAC with increasing one step address in order to control ...
ADC, DAC, and a high speed memory. ...
doi:10.5515/jkiees.2011.11.3.213
fatcat:mt3pa7xyafandajr2sc2e2ggci
Self‐healing digital‐to‐analogue converter architecture for communication equipment with ordered element‐matching technology
2021
The Journal of Engineering
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An attempt was made to establish self-healing architecture using ordered element-matching (OEM) technology for ageing or partially damaged components of digital-to-analogue converter (DAC) components used ...
Using OEM technology, damaged DAC components, such as memory cells, current cells and current cell control switches, can be healed. The performance before and after healing is compared in this work. ...
Because this proposal uses OEM technology, it needs memory. For high-resolution DAC, a trade-off between memory size and conversion speed is necessary. ...
doi:10.1049/tje2.12063
fatcat:ehmjwn3pxnf6lgljsmyfamfivi
Calibration of LOFAR data on the cloud
2017
Astronomy and Computing
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to be analysed is not high, or if the costs of maintaining a system capable of calibrating LOFAR data become high. ...
The calibration of these data presents a huge challenge for final users: a) extensive storage and computing resources are required; b) the installation and maintenance of the software required for the ...
Scientific and technological preparation for the SKA' (AYA2014-52013-C2-1-R) and 'AMIGA6: gas in and around galaxies. ...
doi:10.1016/j.ascom.2017.04.001
fatcat:2x5f2ogpifbzvo5pb4p52nkcdy
A High Performance DDR3 SDRAM Controller
2012
International Journal of Electronics and Electical Engineering
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However, because of the high-speed interface technology and complex instruction-based memory access control, a specific purpose memory controller is necessary for optimizing the memory access trade off ...
In this paper, a specific purpose DDR3 controller for highperformance is proposed. ...
Test equipment for verification of the circuit is no longer available at low costs. The "Fly-By" timing technology puts the burden on system calibration. ...
doi:10.47893/ijeee.2012.1001
fatcat:cfw2vzwtqzcffaimeabfy4sofy
Calibration of LOFAR data on the cloud
[article]
2017
arXiv
pre-print
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We found no significant impediments associated with the speed of data transfer, the use of external block storage, or the memory available. ...
The calibration of these data presents a huge challenge for final users: a) extensive storage and computing resources are required; b) the installation and maintenance of the processing software is not ...
and "Amazon Cloud Processing of LOFAR Tier-1 surveys: Opening up a new window on the Universe". ...
arXiv:1704.05064v1
fatcat:qcmwsb7dybbqlhn2yfsf67sh4i
ALTERNATIVE FUEL CONSUMPTION MEASUREMENT DEVICE FOR MULTIPURPOSE FARM MACHINERY USE
2016
Misr Journal of Agricultural Engineering
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The device has been calibrated with standard method of using volumetric flow rate recorded through precise device made for that purpose. 110 hp New Holland tractor and a 16 hp medium size engine have been ...
under high and low forward speed of the combine respectively. ...
tested tractor.Fig. 8 Average fuel consumed by tractor engine in different test condition Speed
Load
Start
time
End
time
Test time,
min. ...
doi:10.21608/mjae.2016.97584
fatcat:g4oopebgkfg6xewc2q2vdniwqu
Embedded Transient Shock Signal Storage Test Technique under High Overload
2015
Procedia Computer Science
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It is of small size, low power consumption, capable of working under high impact acceleration and good engineering practicability validated by a drop test. ...
at least high overload of 60000g through the static and dynamic calibration device. ...
Cali brati on methods and experiments To test the performance of the assembled set, the calibration experiment must be done. ...
doi:10.1016/j.procs.2015.05.152
fatcat:xle4yjzairbltoift6gk72b47u
A Multi-objective Approach for the Calibration of Microscopic Traffic Flow Simulation Models
2020
IEEE Access
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Three traffic flow models of different dimensionality and complexity were used to test the performance of seventeen metaheuristics for solving the calibration problem. ...
The calibration of traffic-flow simulation models continues to be a significant problem without a generalized, comprehensive, and low-cost solution. ...
FIGURE 22 . 22 NRMS versus search time using MOGBHS, GASA, and SPSA for the calibration of the high dimensionality model. ...
doi:10.1109/access.2020.2999081
fatcat:wehtmim24rafvicgm6rv7eqwfu
Performance Study of Satellite Image Processing on Graphics Processors Unit Using CUDA
2012
Korean Journal of Remote Sensing
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Acknowledgements The authors would like to thank the two reviewers for their valuable comments and their helpful contribution in improving this article. ...
And we propose a new Korean Journal of Remote Sensing, Vol.28, No.6, 2012 platform in this study for improving the speed of high-resolution satellite image data processing. ...
In our experiment, we tested the speed of both the CPU and GPU versions of the conversion to Landsat-7 ETM+ spectral radiance calibration algorithm. ...
doi:10.7780/kjrs.2012.28.6.8
fatcat:ydu3nft3dravljscr6a7goffsi
Decreasing Computational Time of Urban Cellular Automata Through Model Portability
2006
Geoinformatica
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Regardless, the research demonstrates that the portability of a model can lead to not only to a decrease in computation time, but may increase the viability in practical applications and attract a wider ...
The portability problem is not a trivial one, as many geographic models are designed to be run inside a set environment (Unix, Solaris, Linux, and Windows), and are further limited by hardware constraints ...
Public Policy Institute of California for the use of their Sun Fire server. ...
doi:10.1007/s10707-006-7579-0
fatcat:aznn4lmysfbevlwwhwkavtuomi
Modeling and analysis of soft-test/repair for CCD-based digital X-ray systems
2003
IEEE Transactions on Instrumentation and Measurement
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It tests the images to detect the detective pixels and filter noise at the frame memory level and caches them in a flash memory in the controller for future repair. ...
Hard-repair approach employs a high-yield, expensive reparable CCD to minimize the impact of hard defects on the CCD, which occur in the form of noise propagated through A/D converter to the frame memory ...
The proposed CCD soft-testing/repair process scans for the soft defects on the frame memory for a certain amount of time (i.e., referred to as ). ...
doi:10.1109/tim.2003.818735
fatcat:455hdfk7ojds7dkuiuq5sz7rqa
Emerging Trends in Instrumentation in Rocket Motor Testing
2015
Defence Science Journal
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This limitation was due to onboard solid-state memory, and due to this limitation, high speed photography camera was preferred over high speed video camera. ...
Pressure transducers are calibrated before and after the test by dead weight tester using nine-point calibration method. ...
doi:10.14429/dsj.65.7949
fatcat:6txik3esdvdtneoildhscrpeie
A Methodological Approach to High Precision Measurement of Dynamic Torque of Engine
2010
Chemical Engineering Transactions
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It will avoid spending the massive time, the manpower and the physical resource. This test plan convenient, nimble, the precision is high. ...
This test recording system structure is simple, and the function is reliable, has realized the precision measuring, to the sensor precision request is not too high. ...
The Whole Structure Project A device is designed for measuring dynamic torque of medium speed diesel engine axis in the high duty diesel generator set system. ...
doi:10.3303/cet1021169
doaj:118b665fc2df47ce801bb9449bd9c127
fatcat:mtgcemjl55g7jkot7f3rj3xoam
RemoteEye: An open-source high-speed remote eye tracker : Implementation insights of a pupil- and glint-detection algorithm for high-speed remote eye tracking
2020
Behavior Research Methods
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Existing low-cost solutions however, focus solely on lower frame rates (up to 120 Hz) that might suffice for basic eye tracking, leaving a gap when it comes to the investigation of high-speed saccadic ...
This includes methods to effectively and robustly detect and track glints and pupils in the context of high-speed remote eye tracking, which, paired with a geometric eye model, achieved an average gaze ...
To the knowledge of the authors, this is the first time such a high-speed real-time remote eye-tracking system with low data loss is offered. ...
doi:10.3758/s13428-019-01305-2
pmid:32212086
fatcat:gpuid2k3azhxljxbgklmr3avmy
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