The features of development and optimization of software for real-time LIDAR data processing are considered. The advantages of the LabVIEW graphical development environment for creating highly optimized applications using parallel execution threads and pipelined data processing are shown.
The main problems of underwater laser ranging, principles of constructing laser location systems (LLS), features of the implementation of LLS of underwater robots are considered. The choice of parameters and components of LLS for underwater robotic systems is substantiated, taking into account the requirements of work in conditions of limited visibility.
The analysis of the implementation problems of technical vision systems based on the use of time-of-flight laser lidars is carried out. It is concluded that the implementation of vision systems with acceptable parameters dictates an excessively high cost of the lidar. An alternative version of the lidar implementation is considered – a gated lidar based on a laser vision system. Replacing the broadband detector and high-speed scanning system with a gated CCD-matrix can significantly reduce the cost of the lidar while ensuring the high resolution of the lidar. The analysis of the dependence of the signal-to-noise ratio for gated lidar with and without an electron-optical converter has shown that in bad weather conditions the decrease in the gain of the useful signal when the image intensifier is excluded is compensated by the exclusion of the EOC's noise factor, so that the loss in the observation distance is less than 15%.
This paper continues the previous publication «Laser for generation of ultrashort pulses with controllable duration for robotics» [1] and concerns latest investigations of the novel technology of using a controllable Michelson interferometer as the laser resonator output mirror. The proposed algorithm of controlling phase modulation allowed to demonstrate the feasibility of preferential amplifying and extracting several subnanosecond radiation pulses with enhanced peak power from a train of synchronization mode pulses. The preferences, shortcomings and perspectives of the considered technology development are discussed.
This paper presents the analysis and experimental research of an original scheme of the solid-state laser resonator, capable of emitting subnanosecond radiation pulses with controllable duration. For this purpose, it is proposed to use the controllable Michelson interferometer, containing an electro optical phase modulator as a composed output resonator mirror. In this case, the interferometer provides the active resonator mode locking as well as the fast resonator Q-switching mode for effective generation of the output radiation pulses with variable duration.
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