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The multipeaked correlation functions of binary offset carrier (BOC) modulated signals introduce an ambiguity threat into the code tracking. Several techniques have been proposed to solve this problem, such as a class of two-dimensional (2-D) tracking techniques, in which the spreading code and the subcarrier are tracked separately. In this paper, the key properties of correlation functions and the...
We optimized micro-holes in a thin slab for fast Si photodetectors at wavelength 800–950nm. Lateral modes are shown to be responsible for the effective light trapping. Small disorder and cone hole shapes helped achieve uniform quantum efficiency in a wide wavelength range.
In the existing various kinds of active contour model methods about image segmentation, level set method has been widely used because of its powerful capabilities of topological transformation. Because of the global computation, level set has accurate shape description effect. On the other hand, it makes the segmentation result sensitive to noise. In this paper, we propose a simple modified method...
In this paper, a novel dielectric resonator antenna resonating at 3.46 GHz is presented. From simulated results, it has been confirmed that the mode TExδ01 has been excited inside the proposed DRA. Since the uniform field distribution over the main radiating aperture, this design has about 5.83 dB gain at θ = 0°. Meanwhile, the ceramic DR is located only 3mm above the ground plane and still shown...
The integral image is typically used for fast integrating a function over a rectangular region in an image. We propose a method that extends the integral image to do fast integration over the interior of any polygon that is not necessarily rectilinear. The integration time of the method is fast, independent of the image resolution, and only linear to the polygon's number of vertices. We apply the...
A rectangular dielectric resonator antenna (DRA) with TExδ01 mode is proposed in this paper. Since the uniform field distribution over the main radiating aperture, it has about 6.68 dB gain at θ=0°. The designed antenna is fed at the upper side that has the potential to integrate with chip in millimeter-wave frequency band.
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