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Indoor location finding using electromagnetic field strength measurement is one of the methods being used in different applications in recent years. There are two main problems/ challenges in the direct current electromagnetic (EM) accurate location devices which are used for indoor location. First, the changing of positioning data received is not linear when sensors are moving linearly. Second, the...
In recent years, with CCD (or CMOS) image sensor as the core components, digital cameras turns into a new generation cameras. Compared with ordinary cameras, digital cameras have a distinct advantage: achieving digital information collection, image processing conveniently, and have been widely used in many fields presently. However, when people using ordinary digital camera doing research, few consider...
Proposing a theoretical model of calibrating the large-scale unit to its center which is based on the PSD, which is acronym for position sensitive detector, and photoelectric technology. The principle of least square method is applied to the multi-spot fitting the center of the bearing shell and the spatial straight line for optimum calibrating. The numeral partial-differentiation equations set are...
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