Recent development of autonomous GNC technologies for small celestial body descent and landing

Ge, Dantong; Cui, Pingyuan; Zhu, Shengying

doi:10.1016/j.paerosci.2019.06.002

Cited by 40 publications

(4 citation statements)

References 99 publications

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“…The GNC requirements are divided into the system section, which contains the capability features of the reference systems and communication links. The GNC systems vary from fully manual to semiautonomous or fully autonomous (Ge et al, 2019). Several required features of a UAS vehicle, control station, and system were previously identified in a pilot study conducted by Gheisari and Esmaeili (2016) and thus were considered important in this study.…”

Section: Improving Construction Safetymentioning

confidence: 99%

Applications of drones for safety inspection in the Gulf Cooperation Council construction

Umar

2020

ECAM

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Purposeconstruction industry in the Gulf Cooperation Council (GCC) member countries is at the peak as the region is in the stage of developing its infrastructures. Apart from some positive sign of this boost, several other issues have also been developed in the region. One of such issues is the safety of workers at the construction sites. This article, based on a variety of applications of drones in other industrial sectors, considers the use of drones for construction safety improvement in the GCC countries. This article aimed to investigate the safety-related applications of drones considering technical features and barriers and enablers for safety-related tasks.Design/methodology/approachA mixed research approach using both qualitative and quantitative methods was adopted to achieve the aims and objectives of this research. Data were collected through a systematic literature review, semistructured interviews and using a structured questionnaire. A total of 37 relevant research items and 10 interviews were held with construction safety professionals, and 92 responses collected from the safety managers through a structured questionnaire was used to derive the conclusion of this research. The collected data were processed and analyzed using the Statistical Product and Service Solutions (SPSS) program. Descriptive analyses were carried out in which means and importance factors were calculated.Findings25.92% of participants confirmed that they or their company had used the drone in different activates. The most common application of drones reported by the respondents was photography for marketing purposes followed by surveying application and quality inspections. The camera movability was the top-rated technical feature required for safety-related inspections. Similarly, “Working near the corner or edge of unprotected opening” was the top-rated application of drone for safety-related tasks. The safety concerns of using drones at job sites were rated as the most important barrier by the participants. Technical challenges associated with the use of drones for safety improvement was rated as the second most important barrier by the participants.Research limitations/implicationsAlthough, the research presented in this article is based on the GCC construction industry, however, since the data collected through systematic review and semistructured interviews are not a regional base, therefore the finding of this research could also be useful in other regions. Further research however, needs to be conducted to reduce the implications of the barriers identified in this paper so that the drone can be effectively used for safety improvement in construction not only in the GCC region but also in other countries.Practical implicationsOnce the GCC construction industry will be able to overcome the challenges associated with the application of drones in safety improvement, the safety managers will be able to monitor the site more effectively which could be helpful to improve the safety performance of the construction organization.Social implicationsImproved safety performance in not only in the greater interest of the construction organizations as they can reduce the costs associated with poor safety but can also avoid the delay caused by construction accidents. Similarly, improved safety performance reduces the accidents at construction sites, and thus reduces injuries and disabilities caused by such accidents, making the construction workers a useful part of the society. The application of drones in safety-related tasks is one of the key solutions that can lead us to improved safety performance.Originality/valueAlthough, the use of drone technology has revolutionized a number of industrial sectors due to its variety of applications, the application in construction particularly in the GCC region is still very limited. As noted in the results of this research, only 21 participants (25.92%) expressed that they or their company had used the drone in different activates. This means that the industry is not getting the full advantage of the available drone technology. The results of this research will enable construction industry stakeholders to know the challenges associated with the application of drones for safety improvement and to develop strategies to overcome these challenges.

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Section: Improving Construction Safetymentioning

confidence: 99%

Applications of drones for safety inspection in the Gulf Cooperation Council construction

Umar

2020

ECAM

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“…The very low activity levels of MBCs make this challenging -to build up the necessary signal-to-noise to make a sensitive detection via mass spec-troscopy, Castalia proposed extended periods of automated close proximity station keeping. This would have been a significant technological advance from Rosetta, where navigation with ground control in the loop meant reaction times of a few days, but automated on-board navigation is now a mature spacecraft technology, to the point of enabling precision landings on asteroids or Mars (Ge et al 2019). MBCs also differ from other comets in that their ices may be buried deeper under a refractory crust, or exposed in only a small and recently uncovered active area, and locating volatiles must constitute an important part of the mission.…”

Section: Main Belt Cometsmentioning

confidence: 99%

Past and Future Comet Missions

Snodgrass¹,

Feaga²,

Jones³

et al. 2022

Preprint

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We review the history of spacecraft encounters with comets, concentrating on those that took place in the recent past, since the publication of the Comets II book. This includes the flyby missions Stardust and Deep Impact, and their respective extended missions, the Rosetta rendezvous mission, and serendipitous encounters. While results from all of these missions can be found throughout this book, this chapter focuses on the questions that motivated each mission, the technologies that were required to answer these questions, and where each mission opened new areas to investigate. There remain a large number of questions that will require future technologies and space missions to answer; we also describe planned next steps and routes forward that may be pursued by missions that have yet to be selected, and eventually lead to cryogenic sample return of nucleus ices for laboratory study.

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“…Exploring small bodies contributes to understanding the formation and evolution of the universe for human beings and researching the origin of life [1]. In the past decade, many countries have conducted a series of exploration missions targeting small bodies, such as the United States' OSIRIS-REx and Lucy's mission [2][3][4], the European Space Agency's Rosetta mission [5], and Japan's Hayabusa2 mission [6].…”

Section: Introductionmentioning

confidence: 99%

Crater Triangle Matching Algorithm Based on Fused Geometric and Regional Features

Jin,

Shao

2024

Aerospace

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Craters are regarded as significant navigation landmarks during the descent and landing process in small body exploration missions for their universality. Recognizing and matching craters is a crucial prerequisite for visual and LIDAR-based navigation tasks. Compared to traditional algorithms, deep learning-based crater detection algorithms can achieve a higher recognition rate. However, matching crater detection results under various image transformations still poses challenges. To address the problem, a composite feature-matching algorithm that combines geometric descriptors and region descriptors (extracting normalized region pixel gradient features as feature vectors) is proposed. First, the geometric configuration map is constructed based on the crater detection results. Then, geometric descriptors and region descriptors are established within each feature primitive of the map. Subsequently, taking the salience of geometric features into consideration, composite feature descriptors with scale, rotation, and illumination invariance are generated through fusion geometric and region descriptors. Finally, descriptor matching is accomplished by computing the relative distances between descriptors and adhering to the nearest neighbor principle. Experimental results show that the composite feature descriptor proposed in this paper has better matching performance than only using shape descriptors or region descriptors, and can achieve a more than 90% correct matching rate, which can provide technical support for the small body visual navigation task.

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Recent development of autonomous GNC technologies for small celestial body descent and landing

Cited by 40 publications

References 99 publications

Applications of drones for safety inspection in the Gulf Cooperation Council construction

Applications of drones for safety inspection in the Gulf Cooperation Council construction

Past and Future Comet Missions

Crater Triangle Matching Algorithm Based on Fused Geometric and Regional Features

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