Expressions which show the wave fronts and elucidate the Doppler effect are obtained. Several particular cases of the considered problem including the heat conduction equation and the wave equation are investigated. The quasi-steady-state solutions are also examined for the case of non-moving time-...
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the drilling process inherently induces cracks and fissures along the borehole wall and under normal conditions this does not pose any problems for the drilling operations. However when the stresses induced by drilling are too high, the fissures may open up and cause an unwanted influx/efflux of...
The Doppler effect upshifts the frequency of the reflected wave to match that of the higher frequency wave. This time, however, the grating induces a π-phase shift, so that the reflected wave component interferes destructively with the higher frequency wave and leads to its amplitude attenuation...
Poles Polarization Target Structure-Induced Modulations Wide Band Radar Future Efforts APPENDIX: ILL-POSED PROBLEMS Compactness of a Set and Compact Operators Singular Value Decomposition Least-Squares Solutions and Ill-Posedness BIBLIOGRAPHY INDEX Each chapter contains References....
Relative movement between a user and a base station serving the user causes a number of problems to the cellular system. As a user moves, they will pass from the coverage area of one cell to the coverage area of another cell. The system must ensure that users are handed-off from one ...
However, the presence of random and systematic noise in code observation result in defective solutions, restricting its reliability. To suppress thermal noise, various carrier-aided smoothing methods have been proposed, including the Hatch filter, which is essentially a low-pass filter that attenuates ...
However, HI through visual video can be problematic under low lighting conditions and with the privacy infringement issues [1]. As an alternative to the use of cameras, radar devices bypass these problems. Radar is a detection system that measures the distance, direction, angle, and speed of ...
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(SchoolofElectronicEngineering,XidianUniversity,Xi’an710071,China)AbstractThispaperexpoundshowpulseDopplerradarusestheDopplerEffecttodetectthevelocityofthetar—get.ItalsoanalyzesthecharacteristicsoftheDopplerfiltergroup.ThenitgivestheengineeringsimulationmethodinVC++,theproblemsthatemergeandtheirsolutions.Finally,it...