lmccd Imaging System with Low Interference Noise

Abstract

The LMCCD imaging system with low interference noise relates to an LMCCD imaging system with low interference noise, which solves the problem of mutual interference in the existing LMCCD imaging because the linear array and the area array detectors are at the same focal plane position, and the imaging controller Generate the timing signals required by the line array and the area array, and send them to the line array detector and the area array imaging detector after passing through the horizontal driver of the line array, the vertical driver of the line array, the horizontal driver of the area array and the vertical driver of the area array respectively ; The analog image data output by the line array detector and the area array imaging detector are sent to the imaging controller after video processing by the line array video processor and the area array video processor respectively; the line array and the area array are controlled by the same source clock, Avoid beat frequency interference; reduce mutual return overlap by ground isolation and single-point grounding; reduce electromagnetic emission by reducing the rising and falling edge time of the drive circuit; by ensuring the same blanking period of the linear array and the area array, Avoid transitions in the drive signal that interfere with the signal being transferred.

Description

technical field [0001] The invention relates to an LMCCD imaging system with low interference noise, in particular to an LMCCD imaging system with low interference noise aimed at aerospace applications. Background technique [0002] The principle of the LMCCD (Line-Matrix Array CCD) camera is based on the three-line array detector camera, adding four small area arrays at the four corners of the line-matrix array detector to form a line-matrix array mixed configuration camera. In the EFP (equivalent frame photo) method of the LMCCD image, the selection of the image point is completed on the front-view image, and the image matching method is applied to obtain the same-name point of the area detector image, and calculate its real frame coordinates at the EFP moment , and at the EFP moment, the real image plane coordinates of the connecting points are added as observation values, so that many triangular lock models in the route are better integrated, and the adjustment height ac...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of mutual interference in the existing LMCCD imaging because the linear array and the area array detectors are at the same focal plane position, the present invention provides an LMCCD imaging system with low interference noise

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