Multichannel TDI imaging method based on area array detector and readable storage medium

Abstract

The invention provides a multichannel TDI imaging method based on an area array detector. The area array detector comprises a full spectrum window and at least one target spectrum window. The imaging method comprises the following steps: setting the initial row position and the row number of each spectrum window on the area array detector according to the required integration level; calculating the image plane line frequency, and adjusting the imaging frame frequency of the area array detector to be matched with the line frequency; controlling exposure imaging of the area array detector in an external triggering mode to obtain a continuous image sequence of each window; and accumulating the image sequences according to the corresponding pixels to obtain each spectral image. According to the method provided by the invention, a multi-channel TDI push-broom imaging function is realized on a single area array detector, a strict relationship is established between the integral series and the frame frequency and between the integral series and the image shift line frequency, and push-broom imaging parameters such as the integral series and the line frequency of each channel can be flexibly configured.

Description

technical field [0001] The invention belongs to the technical field of optical remote sensing imaging, and relates to an imaging method based on an area array detector, in particular to a method capable of flexibly realizing multi-channel TDI imaging. Background technique [0002] The imaging detector is a very important imaging photosensitive element, mainly including CCD (Charge-coupled Device) and CMOS (Complementary Metal Oxide Semiconductor, Compementary Metal Oxide Semiconductor) two categories. The charge information stored in the CCD needs to be read after the transfer is carried out bit by bit under the control of the synchronous signal. The charge information transfer and read output require a clock control circuit and different power supplies. The whole circuit is more complicated and slower. . The CMOS sensor directly outputs digital signals after photoelectric conversion, the signal reading is very simple, and it can also process the image information of each u...

AI Technical Summary

Problems solved by technology

Since the incident energy of light is constant, the energy is reduced after splitting or filtering, so it is necessary to use a larger-sized pixel, and the corresponding spatial resolution decreases accordingly.

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