Spaceborne target detection tracing camera in sun viewing blind zone

Abstract

The invention discloses a probing and tracking camera for targets on solar observation blind areas, which can be arranged on a satellite to observe and track targets on the solar observation blind areas. The camera comprises an attenuation filter, an optical system, a probe and a data processing circuit; wherein, a ray of light from an object space passes through the attenuation filter and the optical system and forms an image on the probe. The attenuation filter is used to adjust the intensity of light coming into the camera, and the optical system adopts a double-Gauss near infrared teleobjective system; the probe adopts a CMOS probe, and the dynamic range is designed as follows: the brightness of the sun, sunspot images is designed out of the dynamic range of the camera, and the brightness of the observed targets is designed within the saturation value of the camera. The data processing circuit conducts reverse-phase processing over the images output by the probe, so as to enable the system to acquire higher positioning precision of the targets. The probing and tracking camera in the invention, together with a sun sensor, a two-dimensional tracker and an image processing system, forms a whole probing and tracking system for targets.

Description

technical field [0001] The invention relates to space target detection and tracking technology, in particular to a solar observation blind zone target detection and tracking camera, which can be installed on a satellite to observe and track targets located in the sun observation blind zone. Background technique [0002] At present, in the detection field of space remote sensing satellites, when conventional remote sensing cameras face the sun, most cameras will be "blinded" when facing the sun because the brightness of the sun exceeds the dynamic range of the camera. Time to face the sun can even cause permanent damage to the entire imaging system. Therefore, whether it is the observation camera of the space remote sensing satellite or the airborne tracking equipment, there is a blind area of ​​the spatial solid angle in the direction facing the sun. [0003] From U.S. Patent No. 5,093,574, it can be seen that the ultraviolet detection technology applied to the military fie...

AI Technical Summary

Problems solved by technology

It can be seen that this method increases the consumption of a killer

[0004] The existing solar observation blind zone target detection technology generally adopts the method of avoiding the sun to observe the target, which has certain limitations in use

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