DEVICE AND METHOD FOR DYNAMIC ADAPTATION OF SPATIAL RESOLUTION FOR IMAGER FOURIER TRANSFORM SPECTROMETERS

摘要

A device and method for dynamically adapting spatial resolution for imager Fourier transform spectrometers makes it possible to acquire data in interferogram mode and image mode on survey points for an observed scene, each survey point being associated a matrix of macro-pixels and defined by a plurality of zones. For each survey point, analysis of the content of each zone is carried out on the basis of data of the image mode. Classification into clear zone or non-clear zone is carried out as a function of proportion of cloud, and clear-pixel data are generated on the basis of the sum of the data of the macro-pixels of the clear zone class. Survey point data are generated on the basis of the sum of the data of all the macro-pixels of the matrix associated with the survey point. The survey point and clear pixel data streams are transmitted to the ground.

主权项

1. A method for adapting the resolution of an imager Fourier transform spectrometer, comprising:
acquisition of data in interferogram mode and in image mode on survey points for an observed scene, each survey point being associated a matrix of macro-pixels and defined by a plurality of zones; for each survey point:
analysis on the basis of the data of the image mode of the content of each zone;classification according to the result of the analysis, of each zone into a clear zone class or into a non-clear zone class; for each survey point having clear zones and non-clear zones:
summing the data of the macro-pixels of the clear zone class to generate a “clear pixel” data stream and summing the data of all the macro-pixels of the said matrix of macro-pixels associated with the said survey point to generate a “survey point” data stream; and transmitting the two data streams.