Imaging circuit system of high-orbit area array staring infrared camera

Abstract

The invention discloses an imaging circuit system of an area array staring infrared camera on high rail, which comprises an area array infrared detector, a bias drive module, a signal processing module, a data storage module, a locking current limiting monitoring module and a high-speed clock management module. In the bias drive module and signal processing module, high-performance and high-radiation-resistant devices are used to generate the bias drive voltage and timing required for the work of the area array infrared detector; in the data storage module, the read-write control is flexible and single The magnetic memory array that is immune to particle flipping stores the large-scale non-uniformity correction coefficients of the area array infrared detector, which effectively prevents the occurrence of single event flipping effects; for devices that are sensitive to single event locking in the system, lock-in current limiting control technology is used to protect lock-in The device is not burned by high current, which improves the anti-single event locking capability of the device; the high-speed clock management module provides high-quality clocks for each module. The invention has the characteristics of high speed, high reliability and high radiation resistance.

Description

technical field [0001] The invention belongs to the technical field of infrared camera imaging, and in particular relates to an imaging circuit system of a high-orbit area array staring infrared camera. Background technique [0002] In recent years, area array infrared cameras have been widely used in military and civilian remote sensing fields due to their high sensitivity, no need for optical-mechanical scanning mechanisms, small size, and light weight. When the area array infrared camera is applied to the geosynchronous orbit remote sensing satellite, since the geosynchronous orbit remote sensing satellite is synchronous with the earth and relatively stationary relative to the earth, the area array infrared camera can "stare" at the target area for a long time, at the level of minutes or even at the level of seconds The target area is photographed at high frequency at intervals to obtain the data of the dynamic change process of the target area, with extremely high time r...

AI Technical Summary

Problems solved by technology

[0003] Although the geosynchronous orbit area-array staring infrared camera has many advantages, its orbit is 36,000 kilometers away from the earth, and its orbit height is nearly 600 times higher than that of the low-orbit remote sensing camera. The space environment in low orbit is very harsh. A large number of charged particles and various rays will damage and age electronic components and affect the stable operation of the camera.

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