Results 211 to 220 of about 43,003 (262)
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Problem of track offset in optical disk systems
Applied Optics, 1998In an optical disk drive, it is well known that a tilt of the disk causes an offset in the tracking-error signal (TES). One effect of disk tilt is the introduction of a dc component to the TES, which can be largely corrected by operation of the tracking system at the midpoint between the maximum and the minimum values of the open-loop TES.
R E, Gerber, T S, Gardner, D B, Kay
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Comprehensive Time-Offset Estimation for Multisensor Target Tracking
IEEE Transactions on Aerospace and Electronic Systems, 2020Temporal registration of sensors is an essential preprocessing step in multisensor target tracking systems. A new approach for multisensor time-offset estimation is proposed in this article. First, the time offset pseudomeasurement equation is derived and calculated in both centralized and decentralized scenarios, where measurements and local tracks ...
Song Li +5 more
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Space-Based Satellite Frequency Offset Tracking Method
2019 5th International Conference on Transportation Information and Safety (ICTIS), 2019In satellite positioning, the carrier signals of user mobile terminals and geosynchronous orbit satellites are affected by factors such as transmission distance and Doppler shift. In order to improve the positioning accuracy for the user, based on the research on the factors of transmission time and Doppler shift between satellite and aircraft, a ...
Yu Wang, Zhiyong Lv, Shuaijie Cui
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Offsets and front tire tracks to projective hedgehogs
Computer Aided Geometric Design, 2022There are some known properties on curves of constant width and Zindler curves and their relationship with offsets and front tire-track curves in convex geometry. In this work, a generalization of all these concepts and results to hedgehogs is presented. Discontinuity issues coming from the common parametric definition of offsets and front track curves
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Symbol timing offset tracking for DRM receiver
2013 IEEE Third International Conference on Information Science and Technology (ICIST), 2013Orthogonal frequency division multiplexing (OFDM) system performance degrades due to symbol misalignment. We propose a symbol synchronization scheme based on channel estimation (CE). We applied linear interpolation in time domain and Winner filter in frequency domain to implement CE. The first path time delay of channel determines symbol timing offset.
Guoche Qin, Ming Yan, Guorong Hu
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Offset-free reference tracking for predictive controllers
2007 46th IEEE Conference on Decision and Control, 2007We discuss the offset-free reference tracking problem for linear constrained systems in the presence of disturbances and plant-model mismatch. Introducing disturbance models, we show how to construct a controller/observer combination, such that zero offset is achieved.
Urban Maeder, Manfred Morari
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SAE Technical Paper Series, 2012
<div class="section abstract"><div class="htmlview paragraph">Flex Track Drilling systems have been successfully implemented into several production environments and scenarios over the past couple of years. They continue to see a high demand where traditional machine tool implementations might be prohibitive due to cost or existing jig ...
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<div class="section abstract"><div class="htmlview paragraph">Flex Track Drilling systems have been successfully implemented into several production environments and scenarios over the past couple of years. They continue to see a high demand where traditional machine tool implementations might be prohibitive due to cost or existing jig ...
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Offset compensation in a track and hold circuit
2017 IEEE 60th International Midwest Symposium on Circuits and Systems (MWSCAS), 2017Using a new DC offset compensation method, a fully differential track and hold circuit is presented. It stores an amplified version of the offset during the hold phase, which is used in attenuated fashion during the track phase to compensate offset. This scheme is less sensitive to charge injection and other errors than conventional offset compensation
Shirin Pourashraf +4 more
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Offset-free reference tracking with model predictive control
Automatica, 2010zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Maeder, Urban, Morari, Manfred
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Offset- and gain-compensated track-and-hold stages
1998 IEEE International Conference on Electronics, Circuits and Systems. Surfing the Waves of Science and Technology (Cat. No.98EX196), 1998A class of new fully-differential track-and-hold stages is presented. The gain of the stages does not depend on capacitor matching, and a predictive correlated-double-sampling scheme is used to reduce the effects of op-amp offset and finite dc gain. A prototype chip was fabricated in a 1.2 /spl mu/m double-poly double-metal CMOS process.
null Yunteng Huang +2 more
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