Earth Observation via Compressive Sensing: The Effect of Satellite Motion

Abstract

In the framework of earth observation for scientific purposes, we consider a multiband spatial compressive sensing (CS) acquisition system, based on a pushbroom scanning. We conduct a series of analyses to address the effects of the satellite movement on its performance in a context of a future space mission aimed at monitoring the cryosphere. We initially apply the state-of-the-art techniques of CS to static images, and evaluate the reconstruction errors on representative scenes of the earth. We then extend the reconstruction algorithms to pushframe acquisitions, i.e., static images processed line-by-line, and pushbroom acquisitions, i.e., moving frames, which consider the payload displacement during acquisition. A parallel analysis on the classical pushbroom acquisition strategy is also performed for comparison. Design guidelines following this analysis are then provided.

Compressive Sensing Imaging Spectrometer for UV-Vis Stellar Spectroscopy: Instrumental Concept and Performance Analysis

“…Concerning the space application domains, few studies have addressed the investigation of the potential of CS for Earth observation (EO) applications [ 21 , 22 , 23 , 24 , 25 , 26 ]. Among these, an ESA-funded study for the development of a laboratory demonstrator of a CS-based hyperspectral imager for Earth Observation [ 23 ] which highlighted some critical issues, such as stray light control and the need of very high-speed light modulator, can be mentioned.…”