To find the parameters of a DMC aerial camera, it is necessary to have the focal length of image pixels and so on.

The DMC lens system consists of 8 lenses. There are four panchromatic lenses and four multispectral lenses (red, green, blue and near infrared). Each lens is equipped with a large CCD sensor array. During aerial flight, 8 lenses of DMC digital aerial camera are exposed synchronously, and the digital images obtained by 4 panchromatic lenses and 4 multispectral lenses partially overlap. The positional relationship of the image is similar to that of a butterfly, and then the central projection image with a virtual focal length of 120mm is assembled by using the same name points on the image and expanding outward. Images obtained by multispectral sensors are fused with panchromatic high-resolution images to generate true color or color infrared images.

Focal length:120mm

CCD pixel size: 12 micron * 12 micron

Landscape format: 13824 pixels

Title width: 7680 pixels

Horizontal viewing angle: 69.3 seconds (full color)

Heading field of view: 42 seconds (full color)