Near-Earth Space Two-dimension Opto-electronic Turntable Design
2020
Abstract Near earth space is a space which has important strategic significance and application value in military, scientific exploration and other industry fields, one of the most practical application is to make a reconnaissance platform that can work normally in the near earth space. In this paper, a two-dimensional photoelectric turntable for video surveillance in near-earth space is designed, which can observe the azimuth angle 360 degrees and pitch angle from -110 degrees to 10 degrees, and the capacity of this photoelectric turntable is 7Kg in a space of φ300mm. The optical imaging load in the photoelectric turntable can output high-definition video in real time and the original image is stored in the memory card simultaneous. What is more, the imaging effect can be adjusted by controlling the magnification and focal length by sending commands through serial communication ports. The two-dimensional photoelectric turntable designed in this paper is mounted on the payload cabin and raised to 32.5km for surveillance imaging. The experimental results show that the two-dimensional photoelectric turntable can work normally in the harsh near space environment, and the optical imaging load can output and record fluent high-definition video. The photoelectric turntable designed in this paper will be equipped with other optical load and take part in some near space exploration tasks in the future and obtain corresponding result.
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