High-orbit area array staring infrared camera imaging circuit system

Abstract

The invention discloses a high-orbit area array staring infrared camera imaging circuit system comprising an area array infrared detector, a bias driving module, a signal processing module, a data storage module, a locking and current limiting monitoring module and a high-speed clock management module. In the bias driving module and the signal processing module, a device having high performance and high radiation resistance is used for generating a bias driving voltage and a timing sequence necessary for the work of the area array infrared detector; in the data storage module, a magnetic memory array having flexible reading and writing control and single event upset immunity is used for storing large-scale non-uniform correction coefficients of the area array infrared detector so as to effectively prevent the occurrence of the single event upset effect; for the device sensitive to single event locking in the system, the locking and current limiting technology is used for protecting and locking the device from being burnt by large current and improving the single event upset locking resistance of the device; and the high-speed clock management module provides a high-quality clock for the modules. The high-orbit area array staring infrared camera imaging circuit system provided by 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 mechanism, 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 re...

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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