Accurate spectrum measuring method for moving target

Abstract

The invention discloses an accurate spectrum measuring method for a moving target. The method comprises the steps that (1) a point with the greatest spectral response on the imaging image surface of amap correlation detection system is determined, and the point is set as a calibration center; (2) the target is searched and captured in a large range; on one hand, the background spectrum measured during the search process is recorded; on the other hand, the target is captured, and if the target is captured, the image coordinate of the target and the number of pixels occupied by the target are determined until the target is captured; (3) according to the distance between the image coordinate of the target and the calibration center, the control of a servo mechanism is used to quickly pull the target to the calibration center to measure the spectrum of the target at the position of the calibration center; and (4) according to the number of pixels occupied by the target in the step (2), the proportion of the background in a spectrum measuring range is determined, and the background spectrum is subtracted from the mixed spectrum acquired by the map correlation detection system accordingto the proportion of the background to acquire the target spectrum. According to the invention, the accurate target spectrum can be acquired.

Description

technical field [0001] The invention belongs to the intersecting technical field of target recognition and spectral data processing, and more specifically relates to an accurate spectrum measurement method of a moving target. Background technique [0002] As a popular research method in the field of target recognition in recent years, the precise spectrum measurement method of moving targets has always attracted great attention from scholars and engineers at home and abroad, especially in the tracking and recognition of moving targets with occlusions and sub-pixel level target recognition. , Spectral characteristics of high-speed aircraft research, etc., has great significance. [0003] The existing moving object spectrum measurement method has the following problems: [0004] (1) Some have only spectral measurement equipment, and need to manually aim at the target for spectral measurement. This method can collect the spectral signal of the short-distance target, but cannot...

AI Technical Summary

Problems solved by technology

[0006] In view of the defects of the prior art, the purpose of the present invention is to solve the problem that the existing moving target spectral measurement equipment cannot collect the spectral signal of the long-distance target, and the existing servo system is used to track the target and measure the spectrum of the entire field of view. The amount of spectrum measurement data is large, and the useful target signal is superimposed on a large number of useless background spectrum signals, which makes it impossible to accurately measure the technical problem of the target spectrum

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