Ionospheric Nowcasting Over Italy Through Data Assimilation: A Synergy Between IRI UP and IONORING by Alessio Pignalberi, Claudio Cesaroni, Marco Pietrella, Michael Pezzopane, Luca Spogli, Carlo Marcocci, Emanuele Pica

“…Abstract An accurate modeling of the ionosphere electron density is pivotal to guarantee the effective operation of communication and navigation systems, particularly during Space Weather events. …”
Get full text

Prediction of Full-Frequency Deep-Sea Noise Based on Sea Surface Wind Speed and Real-Time Noise Data by Bo Yuan, Licheng Lu, Zhenzhu Wang, Guoli Song, Li Ma, Wenbo Wang

“…The prediction of ocean ambient noise is crucial for protecting the marine ecosystem and ensuring communication and navigation safety, especially under extreme weather conditions such as typhoons and strong winds. …”
Get full text

A Low‐Latitude Three‐Dimensional Ionospheric Electron Density Model Based on Radio Occultation Data Using Artificial Neural Networks With Prior Knowledge by Ding Yang, Hanxian Fang

“…Abstract The accurate estimation of electron density in the ionosphere is crucial for various applications including remote sensing systems, communication, satellite positioning, and navigation. Previous ionospheric models using artificial neural networks (ANN) are only data‐driven, whose effects are entirely affected by observational data. …”
Get full text

A Regional Model of Topside Ionospheric Effective Scale Heights Derived From Ionosonde and GNSS TEC by Chunhua Jiang, Zhichao Liu, Cong Zhao, Tongxin Liu, Guobin Yang, Hua Shen, Wengeng Huang

“…In this study, a new method was proposed to estimate topside ionospheric effective scale heights from ionosonde and Global Navigation Satellite System (GNSS) vertical total electron content (TEC). …”
Get full text

Beyond the embrace: a phenomenological qualitative exploration of the impact of kangaroo mother care (KMC) on couple relationships in China by Xin Ding, Yiyin He, Peizhen Chen, Chunmei He, Jufang Ding, Hongqing Guo, Wenying Yao

“…These themes collectively illustrated the complex interplay between enhanced emotional intimacy, renegotiated parental roles and the navigation of conflicts within the context of neonatal caregiving.Conclusions KMC may have effects on couple relationships beyond its immediate benefits for the infant. …”
Get full text

Assessment of PPP Using BDS PPP-B2b Products with Short-Time-Span Observations and Backward Smoothing Method by Lewen Zhao, Wei Zhai

“…The BeiDou Navigation Satellite System (BDS) offers orbit and clock corrections through the B2b signal, enabling Precise Point Positioning (PPP) without relying on ground communication networks. …”
Get full text

Ex vivo validation of magnetically actuated intravascular untethered robots in a clinical setting by Leendert-Jan W. Ligtenberg, Nicole C. A. Rabou, Constantinos Goulas, Wytze C. Duinmeijer, Frank R. Halfwerk, Jutta Arens, Roger Lomme, Veronika Magdanz, Anke Klingner, Emily A. M. Klein Rot, Colin H. E. Nijland, Dorothee Wasserberg, H. Remco Liefers, Pascal Jonkheijm, Arturo Susarrey-Arce, Michiel Warlé, Islam S. M. Khalil

“…Abstract Intravascular surgical instruments require precise navigation within narrow vessels, necessitating maximum flexibility, minimal diameter, and high degrees of freedom. …”
Get full text

Experimental Validation of a GNSS Receiver Antenna Absolute Field Calibration System by Antonio Tupek, Mladen Zrinjski, Krunoslav Špoljar, Karlo Stipetić

“…Carrier-phase measurements are essential in precise Global Navigation Satellite System (GNSS) positioning applications. …”
Get full text

Super‐Intense Geomagnetic Storm on 10–11 May 2024: Possible Mechanisms and Impacts by S. Tulasi Ram, B. Veenadhari, A. P. Dimri, J. Bulusu, M. Bagiya, S. Gurubaran, N. Parihar, B. Remya, G. Seemala, Rajesh Singh, S. Sripathi, S. V. Singh, G. Vichare

“…Severe electrodynamic disturbances led to a strong positive ionospheric storm with more than 100% increase in dayside ionospheric Total Electron Content (TEC), affecting GPS positioning/navigation. Further, an HF radio blackout was found to occur in the 2–12 MHz frequency band due to strong D‐ and E‐region ionization resulting from a solar flare prior to this storm.…”
Get full text

Design and Detection Performance of Metal Contaminant Sensor with Triple Coil Structure by Changzhi Gu, Zuo Zhang, Shaoxuan Zhang, Hongliang Zhao, Shukui Hu, Wenbo Zhang, Chenzhao Bai, Hongpeng Zhang, Chenyong Wang

Get full text

A Comprehensive Review on Sensor Fusion Techniques for Localization of a Dynamic Target in GPS-Denied Environments by Shoude Wang, Nur Syazreen Ahmad

“…Although Global Navigation Satellite Systems (GNSS) typically provide sufficient accuracy for outdoor positioning, positioning systems face significant challenges in complex application scenarios, particularly in GPS-denied environments (GDE). …”
Get full text

YOLO-IRS: Infrared Ship Detection Algorithm Based on Self-Attention Mechanism and KAN in Complex Marine Background by Limin Guo, Yuwu Wang, Muran Guo, Xiaohai Zhou

“…Infrared ship detection technology plays a crucial role in ensuring maritime transportation and navigation safety. However, infrared ship targets at sea exhibit characteristics such as multi-scale, arbitrary orientation, and dense arrangements, with imaging often influenced by complex sea–sky backgrounds. …”
Get full text

The Potential for Observing African Weather with GNSS Remote Sensing by Olalekan A. Isioye, Ludwig Combrinck, Joel O. Botai, Cilence Munghemezulu

“…When compared to the wide range of atmospheric sensing techniques, global navigation satellite system (GNSS) offers the advantage of operating under all weather conditions, is continuous, with high temporal and spatial resolution and high accuracy, and has long-term stability. …”
Get full text

Revisiting the Variation of the Ionospheric Irregularities in the Low Latitude Region of China Based on Small Regional Geodetic GNSS Station Network by H. Y. Gao, D. H. Zhang, Z. Z. Liu, S. J. Sun, Y. Q. Hao, Z. Xiao

“…Abstract The rate of total electron content index (ROTI) and loss of lock (LoL) from global navigation satellite system (GNSS) observations are an important data source for ionospheric scintillation study. …”
Get full text

Evidence of genetic determination of annual movement strategies in medium-sized raptors by Ivan Literák, Claudia Maria Kyseláková, Marek Dostál, Caka Karlsson, Jan Škrábal, Mykola Skyrpan, Ervín Hrtan, Lászlo Haraszthy, Rainer Raab

“…Abstract Most species of migrating birds use a combination of innate vector-based orientation programs and social information to facilitate accurate navigation during their life. A number of various interspecies hybridisations have been reported in birds. …”
Get full text

Study on Few-Shot Fault Diagnosis Method for Marine Fuel Systems Based on DT-SViT-KNN by Shankai Li, Liang Qi, Jiayu Shi, Han Xiao, Bin Da, Runkang Tang, Danfeng Zuo

“…The fuel system serves as the core component of marine diesel engines, and timely and effective fault diagnosis is the prerequisite for the safe navigation of ships. To address the challenge of current data-driven fault-diagnosis-based methods, which have difficulty in feature extraction and low accuracy under small samples, this paper proposes a fault diagnosis method based on digital twin (DT), Siamese Vision Transformer (SViT), and K-Nearest Neighbor (KNN). …”
Get full text

Global Empirical Model of Sporadic-E Occurrence Rates by Eli V. Parsch, Anthony L. Franz, Eugene V. Dao, Dong L. Wu, Nimalan Swarnalingam, Nimalan Swarnalingam, Cornelius C. J. H. Salinas, Daniel J. Emmons

“…This study develops a global empirical model of blanketing sporadic-E occurrence rates using a Karhunen–Loéve Expansion (KLE) of a global OR climatology built with Global Navigation Satellite System radio occultation (GNSS-RO) and ionosonde observations. …”
Get full text

Quid du port romain estuarien de Barzan (Charente-Maritime) ? by Vivien Mathé, Laurence Tranoy, Marion Druez, François Lévêque, Vincent Miailhe, Frédéric Pouget

“…It is tempting to propose to interpret these as landmarks for navigation, for example a lighthouse and/or seamark. …”
Get full text

Prospects of the vacuum aspiration biopsy in terms of making the diagnoosis of malignant neoplasms of the mammary glands in patients categorised 3 and 4 according to BIRADS scale by S. S. Skurikhin, I. A. Bolotin, O. L. Chagunava, A. B. Guslev

“…In the period from February 2020 to July 2021, 41 (n = 41) the patient with nodules of 3 and 4a categories according to BIRADS has been passed 41 vacuum aspiration biopsies (VAB) (n = 41) under local infiltration anesthesia with ultrasound navigation. The 17 % (n = 7) of the nodular neoplasms were represented by multiple lesions. …”
Get full text

The Satellite Risk Prediction and Radiation Forecast System (SaRIF) by Richard B. Horne, Sarah A. Glauert, Peter Kirsch, Daniel Heynderickx, Suzy Bingham, Peter Thorn, Babara‐Ann Curran, David Pitchford, Ewan Haggarty, David Wade, Ralf Keil

“…Abstract With new satellite constellations being launched into low Earth orbit, the growing use of medium Earth orbit for radio‐navigation and timing signals, slot region orbits for telecommunications and the introduction of electric propulsion to reach geostationary orbit, there is a growing need to develop services to protect satellites from space weather. …”
Get full text