Advances in deep space exploration via simulators & deep learning

•General classification models are not in-depth enough for deep space exploration.•Simulated images can provide a plethora of neural network training.•Simulated images can train neural networks to identify real exoplanets as well as real images would, or better.•Novelty detection, combined with simu...

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Veröffentlicht in:New astronomy 2021-04, Vol.84, p.101517, Article 101517
Hauptverfasser: Bird, James, Petzold, Linda, Lubin, Philip, Deacon, Julia
Format: Artikel
Sprache:eng
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Zusammenfassung:•General classification models are not in-depth enough for deep space exploration.•Simulated images can provide a plethora of neural network training.•Simulated images can train neural networks to identify real exoplanets as well as real images would, or better.•Novelty detection, combined with simulated images, is turned into simple object detection.•Simulator images are the basis for an entirely more accurate predictive ai spacecraft. The NASA Starlight and Breakthrough Starshot programs conceptualize fast interstellar travel via small relativistic spacecraft that are propelled by directed energy. This process is radically different from traditional space travel and trades large and slow spacecraft for small, fast, inexpensive, and fragile ones. The main goal of these wafer satellites is to gather useful images during their deep space journey. We introduce and solve some of the main problems that accompany this concept. First, we need an object detection system that can detect planets that we have never seen before, some containing features that we may not even know exist in the universe. Second, once we have images of exoplanets, we need a way to take these images and rank them by importance. Equipment fails and data rates are slow, thus we need a method to ensure that the most important images to humankind are the ones that are prioritized for data transfer. Finally, the energy on board is minimal and must be conserved and used sparingly. No exoplanet images should be missed, but using energy erroneously would be detrimental. We introduce simulator-based methods that leverage artificial intelligence, mostly in the form of computer vision, in order to solve all three of these issues. Our results confirm that simulators provide an extremely rich training environment that surpasses that of real images, and can be used to train models on features that have yet to be observed by humans. We also show that the immersive and adaptable environment provided by the simulator, combined with deep learning, lets us navigate and save energy in an otherwise implausible way.
ISSN:1384-1076
1384-1092
DOI:10.1016/j.newast.2020.101517