Article
Computer Science, Information Systems
Khaled Kedjar, Moulay Elhassan Elazhari, Larbi Talbi, Mourad Nedil
Summary: In this study, an efficient model of the channel matrix is developed using deep learning algorithms for a 2 x 2 wireless body area network multiple input output system in underground mines. The model predicts the channel matrix H and identifies the position of the data, as well as determines whether the channel is line-of-sight or non-line-of-sight. Through training and evaluation with data collected in underground mines, the model demonstrates low prediction error and high classification accuracy.
Article
Engineering, Electrical & Electronic
Yunjie Sa, Zhencai Zhu, Gang Shen, Xiang Li, Yu Tang, Pengpeng Chen, Qing-Guo Wang
Summary: This article proposes a nonline-of-sight (NLOS) mitigation algorithm for mine-used underground monorail cranes (MUMCs) by utilizing distance geometric constrain (DGC). The algorithm corrects NLOS errors through a correction method based on the DGC and Cayley-Menger determinant (DGC-CMD), and then employs a robust extended Kalman filter (REKF) to obtain the precise location of the MUMC. Experimental results show that the proposed algorithm outperforms other methods with a maximum localization error of 0.4098 m, an average localization error of 0.2372 m, and a standard deviation of 0.0739 m.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Multidisciplinary Sciences
Lei Yang, Zhi Zhang, Xiao Fang, Shiyu Cao, Zhegong Shangguan, Shiyin Li
Summary: This paper proposes a location information-assisted beamforming method to address the issues in traditional channel training process. By reconstructing the channel model and establishing a robust beamforming optimization problem, it effectively reduces the overhead of the communication system, and the simulation results verify its robustness.
Article
Automation & Control Systems
Shijia Wang, Shibo Wang
Summary: This paper introduces a method using UWB radar imaging to measure the longwall retreat and creep displacements. The method has the capability of all-day, all-weather imaging, and scans bolt plates in the roadway by moving the radar along a slide-way mounted on the head of armored face conveyor. The measurement errors of this method are less than 10 mm.
IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Guan Yuan, Suyang Shi, Gang Shen, Qiang Niu, Zhencai Zhu, Qingguo Wang
Summary: Coal mine location-based services are crucial for achieving intelligence. To overcome range errors in underground mine positioning, a motion inertia estimated adaptive Kalman filtering (MIAKF) method is proposed by combining IMU and UWB technologies.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Chemistry, Analytical
Om Prakash Kumar, Pramod Kumar, Tanweer Ali, Pradeep Kumar, Shweta Vincent
Summary: This article provides an overview of UWB technology, including its origins, importance, various types of UWB antennas, and the concept of UWB notch antennas with different design approaches.
Article
Engineering, Electrical & Electronic
Joon-Yong Lee
Summary: In this letter, we propose an ultrawideband channel clustering algorithm using a modified affinity propagation (AP) method. Unlike typical AP algorithms, we define similarity to reflect amplitude discontinuity observed in Saleh-Valenzuela models. The algorithm was tested on simulated channel impulse response and measured propagation data in an indoor environment, and reasonable clustering results were obtained.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Ondrej Fiser, Vojtech Hruby, Jan Vrba, Tomas Drizdal, Jan Tesarik, Jan Vrba, David Vrba
Summary: This paper presents a compact UWB bowtie antenna and balun circuit for medical MWI applications. The antenna has low reflection coefficient, high radiation efficiency, and can successfully reconstruct images.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Civil
Pengqi Zhu, Xuefeng Yin, Jose Rodriguez-Pineiro, Zhuoyu Chen, Ping Wang, Gang Li
Summary: In this paper, a pioneering research is conducted on radar channel models for the 77GHz mmWave radar in underground parking lot scenario. The research includes analysis of channel characteristics, establishment of an empirical statistical model, analysis of trajectory features, and development of a novel method for discrimination between actual targets and ghost images.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Jungang Yin, Runqi Wu, Jian Yang, Xiangdong Xu, Chong Fan
Summary: A novel ultra-wideband (UWB) microwave diagnostic system based on multimode transferring theory on dielectric waveguides is proposed for accurate detection of internal defects in high voltage polymeric insulators. Simulation and experimental results show promising potential in identifying cracks in energized polymeric insulators based on significant differences in receiving signal levels.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Chemistry, Analytical
Philip Branch
Summary: Underground mining heavily relies on wireless communications, making it crucial to understand the propagation characteristics of key wireless technologies in such environments. This paper presents measurements and models of LoRa radio propagation in an underground gold mine. The results demonstrate excellent propagation performance for LoRa, regardless of line of sight.
Review
Engineering, Electrical & Electronic
Fabian Seguel, Pablo Palacios-Jativa, Cesar A. Azurdia-Meza, Nicolas Krommenacker, Patrick Charpentier, Ismael Soto
Summary: Underground mining is expected to become the leading industry in the future, but current technologies face various limitations due to the unique and demanding conditions in underground mines. Therefore, studying positioning technologies for underground mines is of significant importance, as it requires addressing current system constraints and identifying future research directions.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Saleem Shahid, Hijab Zahra, Saad Bin Qaisar, Ijaz Haider Naqvi, Syed Muzahir Abbas, Subhas Mukhopadhyay
Summary: This paper presents an experimental characterization of a proposed radio link model for an underground mine sensor network. Power efficiency and range are critical considerations when designing a wireless sensor network for low data rate applications in underground mines. A radio link model was developed and evaluated specifically for 433 MHz DASH7 in underground mines, considering the practical electromagnetic properties of mine walls and the propagation medium. The model utilizes the received signal strength indicator (RSSI) and packet error rate (PER) to measure wave propagation and assess the quality of the radio link, leading to improved performance and reliability in complex mine structures.
APPLIED SCIENCES-BASEL
(2023)
Article
Management
Peter Nesbitt, Lewis R. Blake, Patricio Lamas, Marcos Goycoolea, Bernardo K. Pagnoncelli, Alexandra Newman, Andrea Brickey
Summary: Underground mine schedules aim to determine start dates for ore extraction activities, with strategic schedules addressing coarse-level start dates and tactical schedules accounting for day-to-day operational variability to maximize net present value.
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
(2021)
Article
Telecommunications
Mojtaba Ahadi, Javad Nourinia, Changiz Ghobadi
Summary: This paper evaluates the application of a designed antenna for microwave imaging, which is the smallest UWB antenna designed for breast cancer detection at the time of publication. The smaller size of the antenna poses challenges in microwave imaging as it may cause more clutter in the image. Simulation results showed successful detection of tumors using 16 UWB antennas with hemispherical arrangement, and experimental results proved that the designed antenna in an array of 16 antennas is capable of detecting tumors in different locations.
WIRELESS PERSONAL COMMUNICATIONS
(2021)
