A Realization Method of Line Array TDI Type Infrared Detector Area Array Imaging Mode

Abstract

The invention discloses a system for realizing the area array imaging mode of a line array TDI type infrared detector. The implementation system realizes the output of the area array imaging mode through the Bypass test mode, which includes: a host computer, a preprocessing device and a line array TDI type infrared detector. For infrared detectors, the host computer sends area array work commands to the preprocessing device. After receiving the commands from the host computer, the preprocessing device starts to set the line TDI infrared detector control register, and continuously switches the contents of the relevant bits of the Bypass test mode to make the detector output For the determined imaging signal of the pixel array, the preprocessing device receives the analog imaging signal output by the conversion detector, and finally sends the arranged digital imaging data to the host computer, which completes image display and storage. The invention is simple and easy to implement, the result is intuitive, the development period is short, the integration degree of the preprocessing device is improved, and the technical support is provided for the practical application of the linear TDI infrared detector.

Description

technical field [0001] The invention belongs to the technical field of infrared imaging, and relates to a method for realizing an area array imaging mode of a linear TDI type infrared detector. Background technique [0002] The linear TDI infrared detector is an important photoelectric load in the field of remote sensing surveying and mapping. Its TDI linear push-broom working mode can realize the acquisition of large and wide imaging data. Multispectral imaging systems often integrate multiple linear TDI infrared detectors. Realize multi-spectral imaging data acquisition and provide the basis for later spectral fusion. In the multi-spectral linear array TDI infrared detector integrated system, in order to ensure the geometric accuracy of imaging data, the scanning direction must be strictly perpendicular to the direction of detector pixel array arrangement; in order to ensure that the spectral data can be fused, each array The consistency of the lines must be guaranteed be...

AI Technical Summary

Problems solved by technology

In the installation and adjustment of the area array detector, the positional relationship between the target and the pixel is usually determined by using a straight-line target to determine the position of the line array. However, the normal working mode of the line array TDI device is TDI integration, and the obtained imaging data is As a result of the joint action of multiple pixels, the relationship between pixel arrangement and imaging data cannot be effectively established, which increases the difficulty of system integration and adjustment. , if the imaging data can correspond to the arrangement of pixel positions, the efficiency of integrated assembly and adjustment will be greatly improved

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