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This paper proposes a improved Genetic algorithm used in anti-missile systems, which is verified more efficient than the ordinary method. Experimental results simulated on 8 attacking objects was carried out. The improved Genetic algorithm improves normal Genetic algorithm by up to 6.07% in the average optimal time. These preferable results demonstrate the advantage of the adaptive Genetic algorithm...
It is true that Terrestrial Laser Scanning (TLS) can quickly acquire the detailed and accurate three-dimensional data of ground objects, thus it is widely used in digital city, the protection of historic buildings and the deformation monitor of bridges, etc. However, the huge data of the point clouds would create huge TIN (Triangulated Irregular Network) models. It is difficult to use these data on...
The emergence of airborne LIDAR system provides a new technical method for fast acquisition and processing of the spatial three-dimensional data. The limitations of traditional techniques are overcome by LIDRA, using of non-contact scanning data to obtain high-precision 3D data, it be able to work in all-weather, with a quickly scanning speed, strong real-time, all-digital processing and so on. The...
A simple multi-wavelength erbium-doped fiber laser with narrow-line-width lasing output was proposed and demonstrated using fiber Bragg gratings and Arrayed-Waveguide Gratings (AWG). Wavelength competition was naturally prevented in this kind of laser by using AWG in the linear-cavity. Experiment results showed that the laser can be operated stably in narrow-line-width with multi-wavelength output...
Long-term single-frequency stabilisation of an external-cavity semiconductor laser has been demonstrated using a multisegment composite-cavity configuration and an automatic frequency control loop with feedback to the external cavity. Mode-hopping free single-longitudinal-mode oscillation with a linewidth of about 200 kHz and a frequency shift within 28 MHz has been observed over 24 h.
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