A Fully Autonomous On-Board GNC Methodology for Small-Body Environments Based on CNN Image Processing and MPCs
Publicated to:Aerospace. 11 (11): - 2024-01-01 11(11), DOI: 10.3390/aerospace11110952
Authors: Peñarroya P; Escalante A; Frekhaug T; Sanjurjo M
Affiliations
Abstract
The increasing need for autonomy in space exploration missions is becoming more and more relevant in the design of missions to small bodies. The long communication latencies and sensitivity of the system to unplanned environmental perturbations mean autonomous methods could be a key design block for this type of mission. In this work, a fully autonomous Guidance, Navigation, and Control (GNC) methodology is introduced. This methodology relies on published CNN-based techniques for surface recognition and pose estimation and also on existing MPC-based techniques for the design of a trajectory to perform a soft landing on an asteroid. Combining Hazard Detection and Avoidance (HDA) with relative navigation systems, a Global Safety Map (GSM) is built on the fly as images are acquired. These GSMs provide the GNC system with information about feasible landing spots and populate a longitude–latitude map with safe/hazardous labels that are later processed to find an optimal landing spot based on mission requirements and a distance-fromhazard metric. The methodology is exemplified using Bennu as the body of interest, and a GSM is built for an arbitrary reconnaissance orbit. © 2024 by the authors.
Keywords
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Bibliometric impact. Analysis of the contribution and dissemination channel
The work has been published in the journal Aerospace due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2024 there are still no calculated indicators, but in 2023, it was in position 14/52, thus managing to position itself as a Q2 (Segundo Cuartil), in the category Engineering, Aerospace. Notably, the journal is positioned en el Cuartil Q2 para la agencia Scopus (SJR) en la categoría Aerospace Engineering.
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Leadership analysis of institutional authors
There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: Last Author (SANJURJO RIVO, MANUEL).