52 research outputs found
Current status of using bioreactors to produce secondary metabolites from medicinal and aromatic plants
No full text
Mid-Inclination Orbits for Small Satellite SAR Constellations and their Interferometric Exploitation: the IRIDE case study
No full textA model-based approach for the preliminary design of small satellites constellations based on user needs analysis. The Iride optical sub-constellation case study
No full textUsers demand for services is a fundamental point for the end-to-end analysis of a space mission. In this work the importance of users’ needs is highlighted thanks to the systematic model-based approach presented and used for obtaining optimal constellation in terms of services offered. The adopted methodology, that links users’ need analysis and technical requirements of the considered constellation, includes 5 phases: formulation, in which, through an accurate analysis of user needs, it passes from user requirements to technical requirements and the former are traced thanks to a prioritization of the same, enumeration, in which the orbital parameters are selected of the constellation, then all possible constellation combinations are filtered with the parameters selected in the constellation design matrix, simulation, in which the obtained constellation combinations are simulated and the parameters and performances of interest are obtained, evaluation, in which the revenue metrics, down-selection, in which with the help of the Pareto optimality criterion it is possible to select optimal constellations in terms of satisfaction of user needs and amount of data downloaded to the ground. As a case study the preliminarily design of the optical sub-constellation of the Italian constellation for Earth Observation IRIDE, is considered. The considered case of study, based on the users’ demand expressed through the Copernicus User Forum, permits to demonstrate the capability of the proposed approach for the preliminary designs of space architectures permitting to evaluate different optimal constellations and compare them considering their ability to reply to the needs raised by the end-users
Constellation Design and Analysis for Spaceborne DInSAR Mapping in Mid-Inclination Orbits: The IRIDE NIMBUS Mission
No full textThe IRIDE constellation is an ambitious Italian space program that will support the national authorities in their analyses and monitoring activities, with a focus on Italian territory mapping. It will comprise a series of small satellite sub-constellations exploiting a wide range of remote sensing technologies. This paper analyses the NIMBUS X-Band Synthetic Aperture Radar (SAR) IRIDE sub-constellation, exploring potential orbital configurations beyond the more conventional and widespread Dawn-Dusk Sun-Synchronous Orbit (SSO) one. In particular, starting from the mission target, we show that a 49° Mid Inclination Orbit (MIO) in a right-looking StripMap acquisition mode represents a highly effective choice for NIMBUS. We demonstrate that this configuration enhances the systematic coverage of the Italian territory with 6 nodal days of interferometric revisit time and high spatial resolution, thereby facilitating detailed observations of both natural phenomena and anthropic activities. In terms of Differential Interferometric SAR (DInSAR) performance, we prove that MIOs do not show significant limitations for what attains the critical baseline and geometric distortions. In addition, MIOs may lead to future advances in creating 3D displacement maps because they allow for the recovery of the North-South deformation component that, conversely, cannot be precisely measured with DInSAR systems operating in SSO
National scale full-resolution P-SBAS processing for the investigation of critical infrastructure deformations related to the built-up environment
No full textSentinel-1 T117 co-seismic interferogram of Amatrice earthquake (Italy) generated through the ESA G-POD platform
No full textSentinel-1 T117 co-seismic interferogram (wrapped) of Amatrice earthquake (Italy).
Data Type: wrapped Interferogram (radians)
Sensor: Sentinel-1
Observation interval: 15082016S1A_27082016S1A
Applied Phase Filter: None
Wavelength: 5.5465760 [cm]
Look Angle: 39.060890 [deg]
Projection: Geografic Lat-Long (WGS84)
Author: IREA - CNR
Acknowledgments:
Contains modified Copernicus data (2016), ESA GEP, G-POD, CNR-IREA, Italian DP
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