Acousto-optic modulation to realize the spectral response adjustment method of space-time detection

Abstract

The invention discloses a spectral response adjustment method for realizing space-time detection through acousto-optic modulation, which includes the following steps: selecting an area, single-frequency modulation, multi-frequency modulation, changing spectral resolution, adjusting the power of each driving signal, calculating specific positions, and obtaining data ; In the space-time detection of a specific area, the present invention selects single-frequency signals and multi-frequency signals for simultaneous imaging, and cooperates with diffraction spot imaging to facilitate the calculation of the specific positions of incident light and diffracted light, which can effectively reduce the time for detection and data processing, and utilize The ability to adjust the spectral resolution can reasonably select the characteristic spectral segment and flexibly configure the spectral resolution according to the spectral characteristics of different targets, so that it is convenient to record the change of the spectral band, and the diffraction efficiency of the corresponding diffracted light can be changed by adjusting the power of each driving signal. Control the overall shape of the spectral response curve to facilitate recording the shape of the spectral response time curve at different powers.

Description

Technical field [0001] The present invention relates to the field of imaging spectroscopy, and in particular, to sound and light modulation, a spectral response regulation method for time and space detection. Background technique [0002] Existing spectral imaging techniques generally perform full-band spectral scans in accordance with fixed spectral resolution, and do not consider different target features and different needs of different spectrum sections to spectral resolutions, hundred bands, raw data High redundancy, low data efficiency, inconvenience to data transmission, storage, and processing. [0003] And in the prior art, according to the working principle of spectral imaging, when the time and space detection is realized, since the measurement does not have adjustability, the spectral resolution of each wavelength corresponds, the spectral response curve shape is equally fixed, and the adjustment of spectral response cannot be achieved. Equal factors, which can cause ...

AI Technical Summary

Problems solved by technology

[0002] Existing spectral imaging technologies generally perform full-band spectral scanning according to a fixed spectral resolution, without considering different target characteristics and different spectral resolution requirements of similar targets in different spectral bands, often hundreds of bands, raw data High redundancy and low data efficiency bring inconvenience to data transmission, storage and processing

[0003] Moreover, in the existing technology, according to the working principle of spectral imaging, when realizing space-time detection, since the measurement is not adjustable, the spectral resolution and the shape of the spectral response curve corresponding to each wavelength are also fixed, and the adjustment of the spectral response cannot be realized. and other factors will cause problems such as low detection efficiency, messy detection data, and difficulty in accuracy. Therefore, the present invention proposes a spectral response adjustment method for realizing space-time detection through acousto-optic modulation to solve the problems existing in the prior art