Spaceborne and ground-based sensor collaboration: Advancing resident space objects’ orbit determination for space sustainability

Sajjad, Niki; Mirshams, Mehran; Hein, Andreas Makoto

doi:10.1007/s42064-023-0193-1

Astrodyn

2024

DOI: 10.1007/s42064-023-0193-1

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Spaceborne and ground-based sensor collaboration: Advancing resident space objects’ orbit determination for space sustainability

Niki Sajjad,

Mehran Mirshams,

Andreas Makoto Hein

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Cited by 2 publications

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Comprehensive review of noncontact sensing technologies for bridge condition monitoring and assessment

Tian,

Zhang,

Lyu

et al. 2024

Intelligent Transportation Infrastructure

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Bridges play a vital role in modern transportation networks. Nevertheless, the degradation of their materials, combined with the effects of natural disasters (e.g. earthquakes, floods, rockfalls, landslides), can result in decreased performance or even collapse. Therefore, monitoring the health of bridges is essential to maintain the safety and integrity of highway and railway systems. Noncontact sensing technologies provide effective solutions for bridge condition monitoring and performance assessment, as they can gather data without direct interaction with the structure. This paper provides a comprehensive review of the latest noncontact sensing technologies employed for bridge condition monitoring, detailing their principles, benefits, drawbacks, and applications. Firstly, the recent advancements in vision sensing technology for detecting defects, measuring deformations, vibrations, cable forces, vehicle loads, pedestrian-induced impact force, and monitoring vessel collision with bridges are summarized; secondly, the laser scanning technology for three-dimensional model reconstruction, full-field deformation measurement, and quality inspection of bridges are examined; thirdly, the use of microwave radar technology for measuring deformations, vibrations, and cable forces in bridges is investigated. Finally, the paper outlines future trends in noncontact sensing technologies for bridge condition monitoring and evaluation. This comprehensive review offers valuable insights for engineers and researchers in the field of civil engineering.

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Comprehensive review of noncontact sensing technologies for bridge condition monitoring and assessment

Tian,

Zhang,

Lyu

et al. 2024

Intelligent Transportation Infrastructure

View full text Add to dashboard Cite

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Test Method for Single Satellite’s Inter-Satellite Link Pointing and Tracking via Ground Station

Hong,

Huang,

Yang

et al. 2024

Aerospace

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An inter-satellite link is a key technology that improves control accuracy, transmission efficiency, and autonomous capability of constellations. A satellite’s pointing and tracking abilities mainly determine the inter-satellite link’s performance, which should be validated through an in-orbit test. However, during the construction of the constellation, the distribution of satellites does not satisfy the constraints of establishing the inter-satellite link. A test method for inter-satellite link pointing and tracking is developed with respect to a single satellite. A practical mission scenario for testing inter-satellite links’ performance is constructed. A virtual satellite is introduced as the target satellite to establish an inter-satellite link with the local satellite. The orbit of the virtual target satellite between two ground stations is characterized based on the Newton–Raphson method. By comparing the predicted and actual time differences between two ground stations receiving the signals from the local satellite, the inter-satellite link pointing and tracking abilities are evaluated independently. Numerical simulations verify the design of the virtual satellite. The single satellite test method for inter-satellite link pointing and tracking abilities is available.

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Spaceborne and ground-based sensor collaboration: Advancing resident space objects’ orbit determination for space sustainability

Cited by 2 publications

References 71 publications

Comprehensive review of noncontact sensing technologies for bridge condition monitoring and assessment

Comprehensive review of noncontact sensing technologies for bridge condition monitoring and assessment

Test Method for Single Satellite’s Inter-Satellite Link Pointing and Tracking via Ground Station

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