نتایج جستجو برای: displacement error
تعداد نتایج: 306570 فیلتر نتایج به سال:
We study the design parameters for an orbital angular momentum (OAM) multiplexed free-space data link. Power loss, channel crosstalk and power penalty of the link are analyzed in the case of misalignment between the transmitter and receiver (lateral displacement, receiver angular error, or transmitter pointing error). The relationship among the system power loss and link distance, transmitted b...
A real-time dynamic displacement estimation technique is developed by data fusion of laser Doppler vibrometer (LDV) and light dectection and ranging (LiDAR). The velocity measurement of LDV is low level of noise and sampled at high frequency, but has accumulated error during integration. Also, the LiDAR displacement measurement has high level of noise and low sampling frequency. The proposed te...
A new heterodyne nano-displacement with error reduction is presented. The main errors affecting the displacement accuracy of the nano-displacement measurement system including intermodulation distortion error, cross-talk error, cross-polarization error and phase detection error are calculated. In the designed system, a He-Ne laser having three-longitudinal-mode is considered as the stabilized s...
PURPOSE To investigate the effect of optic disc center displacement on retinal nerve fiber layer (RNFL) measurement determined by spectral domain optical coherence tomography (SD-OCT). METHODS The optic disc center was manipulated at 1-pixel intervals in horizontal, vertical, and diagonal directions. According to the manipulated optic disc center location, the RNFL thickness data were resampl...
Background and Aims: despite complex technologies in many work environments, human errors are of great importance due to leading to severe and catastrophic accidents. Therefore, in order to prevent and limit the consequences of human error, it seems necessary to identify and find the causes of them. The aim of this study was to identify and evaluate the human errors of locomotive maneuvers in t...
the output error of the globoidal cam mechanism can be considered as a relevant indicator ofmechanism performance, because it determines kinematic and dynamical behavior of mechanicaltransmission. based on the differential geometry and the rigid body transformations, themathematical model of surface geometry of the globoidal cam is established. then we present theanalytical expression of the ou...
We developed a data assimilation method that incorporates the microwave imager (MWI) brightness temperatures (TBs) into the cloud-resolving model (CRM) developed by the Japan Meteorological Agency (JMANHM). This method consisted of a displacement error correction scheme and an Ensemble-based variational assimilation scheme. In the displacement error correction scheme, we obtained the optimum di...
Multihypothesis motion-compensating predictors combine several motioncompensated signals to predict the current frame of a video signal. This paper applies the wide-sense stationary theory of multihypothesis motion compensation for hybrid video codecs to multihypothesis motion estimation. This allows us to study the influence of the displacement error correlation on the efficiency of multihypot...
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