Analog dynamic object generator for testing avitation camera dynamic resolving power

Abstract

The dynamic definition test of aviation camera uses the simulation dynamic target generator. It belongs to a device used to examine aviation camera's dynamic definition in the realm of optoelectronic detect technique. The technique problem to solve is to provide a kind of simulation dynamic target generator used on aviation camera dynamic definition test. The resolve technique scheme contains uniform illuminant, target definition board, parallel light pipe, flat reflector, single spindle board. The target definition board between the uniform illuminant and the parallel light pipe is located on parallel light pipe's focal plane and vertical to the ray axis. The flat reflector is on the exit light path of parallel light pipe, it makes the ray axis of parallel light pipe align to the center of flat reflector. The flat reflector is vertically fixed on the mesa of single spindle board, it makes the reflecting surface of flat reflector pass the rotating center of single spindle board mesa, and the flat reflector rotates with the mesa's rotating. This generator has simple structure and debugs conveniently. It is fit for all kinds of aviation camera dynamic definition test.

Description

1. Technical field [0001] The invention belongs to a device for detecting the dynamic resolution of an aerial camera and relates to the technical field of photoelectric detection. 2. Technical background [0002] Aerial cameras are generally used in marine monitoring, resource survey, aerial surveying and mapping, environmental monitoring, aerial reconnaissance and other fields. To obtain high-quality ground images, aerial cameras must have high target resolution, especially high dynamic targets. resolution. [0003] For the detection of the dynamic resolution of the aerial camera, in the past, the method of field aviation calibration flight was usually adopted, and the dynamic resolution of the aerial camera was tested by taking images of ground targets with the aerial camera on the plane. Practice has proved that this method is costly, the cycle is long, and the test accuracy is low. Under such circumstances, people in the industry began to turn to indoor detection and r...

AI Technical Summary

Problems solved by technology

The main problems of this detection device are: the structure of the optical system is complicated, and it is difficult to debug. The test device is specially designed for aerospace remote sensors. The target pattern is evenly distributed on the transmission-type cylindrical target drum, which is difficult to design and manufacture, and the processing cost is high. It is difficult to replace, because the dynamic target drum must be placed on the focal plane of the collimator together with the single-axis turntable, and it needs to be matched with a special collimator. It is very troublesome to adjust, and it cannot be used with other ordinary light tubes.

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