Advanced aerial photogrammetry cameras are generally equipped with high-precision POS equipment, stable platform and automatic mission management software to form an aerial photogrammetry system with high measurement accuracy and operation efficiency. This paper presents a new generation of domestic advanced aerial photography system task management software, which adopts modular and parallel design and is composed of three functional modules: aerial photography task control, system hardware equipment control and aerial photography on-line monitoring. The software takes the automatic selection and determination of flight route and exposure waypoint as the logic operation core, and highly integrate the fully automatic management function of aerial photography tasks, hardware devices monitoring and control functions with online aerial photography monitoring functions, realizing diversified photography modes such as timing and fixed point, and meeting the needs of variable baseline aerial photography of complex terrain such as hills and mountains. The software has completed the large area 1:500 automatic aerial photogrammetry task with the domestic area array aerial photographing system, and improved the operation efficiency, automation, accuracy and task visualization level of the domestic area array aerial photographing system.
Since aerial photography entered the stage of digital photogrammetry, digital aerial photography has replaced traditional optical film aerial photography to obtain digital images, becoming a major development trend in the field of photogrammetry. Compared with single-format CCD cameras, large-format aerial survey cameras have the characteristics of wide field of view and high resolution, which can effectively reduce the flight time of aerial photography and improve production efficiency. The AFC-900 large-format aerial survey camera designed by the Beijing Institute of Space Mechatronics has the largest format among cameras in the world with higher resolution and operating efficiency. This article mainly introduces the camera design, main technical parameters, photogrammetric processing technology and advantages of AFC-900, and looks forward to its application prospects.
Aiming at the characteristics of the large format aerial measuring camera with larger field, lower distortion and telecentric beam path, a new optical system with field of 75° and lower distortion was designed in this paper. The optical system selects inverted telephoto as the initial structure instead of symmetric structure. The optical system is all sphere and has the advantages of compactness ,long back working distance and easy to fabrication and alignment. The result shows that the focal length is 135mm,with the relative aperture of 5.2 and the field of 75°,meanwhile , the modulation transfer function(MTF)is higher than 0.3 at the 100lp/mm,the distortion is lower than 0.01%,the biggest angle of incidence on image surface is smaller than 20°. This optical system can be used for the large format aerial measuring camera.
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