Active laser scanning far distance coordinate detecting method

Abstract

The present invention relates to high speed target information obtaining technology and is active laser scanning far-distance coordinate measurement method. Infrared laser beam from the infrared laser is projected onto prism in high speed rotation to form one fanned scanning light plane; the scanning laser beam is then projected to a transmission-reflecting prism to coincide CCD imaging FOV plane and scanning infrared laser beam plane; the reflected echo signal produced by the laser beam scanned to the object is received by the CCD optoelectronic sensor while the light wave with dissimilar wavelength to the scanning laser is eliminated with optical filter. The active laser scanning far-distance coordinate measurement is not affected by natural environment, weather conditions, sunlight and other factors, may be all-weather used, and high S / N ratio and high measurement accuracy.

Description

technical field [0001] The invention relates to a new method for long-distance coordinate measurement in high-speed target information acquisition technology, which belongs to photoelectric testing technology. technical background [0002] For the detection of long-distance object coordinates, the multi-camera measurement method is generally used at present. The real scene of the scene can be seen from the screen of the monitoring terminal, and the relative position coordinates of the object can be measured through the signs placed in the monitoring area. This requires multiple cameras to cover a certain area, and the cameras must be hung high in order to achieve an observation angle of a specific area. This method is also greatly affected by the environment and sunlight, and can only be used at night through local infrared lighting, the coverage area is limited, and the measurement accuracy is low. The use of optical methods to achieve real-ti...

AI Technical Summary

Problems solved by technology

This method is also greatly affected by the environment and sunlight. It can only be used at night through local infrared lighting, the coverage area is limited, and the measurement accuracy is low.

The use of optical methods to achieve real-time measurement of long-distance coordinates has the advantages of high precision, simple system, convenient maintenance, low cost, and ease of use. However, the sensitivity of optical methods to meteorological environments and sunlight is also greatly limited in long-distance applications.

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