Place Lab: Device Positioning Using Radio Beacons in the Wild
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Comparing Four Methods of Correcting GPS Data: DGPS, WAAS, L-Band, and Postprocessing Dick Karsky, Project Leader
United States Department of Agriculture Engineering Forest Service Technology & Development Program July 2004 0471-2307–MTDC 2200/2300/2400/3400/5100/5300/5400/ 6700/7100 Comparing Four Methods of Correcting GPS Data: DGPS, WAAS, L-Band, and Postprocessing Dick Karsky, Project Leader he global positioning system (GPS) of satellites DGPS Beacon Corrections allows persons with standard GPS receivers to know where they are with an accuracy of 5 meters The U.S. Coast Guard has installed two control centers Tor so. When more precise locations are needed, and more than 60 beacon stations along the coastal errors (table 1) in GPS data must be corrected. A waterways and in the interior United States to transmit number of ways of correcting GPS data have been DGPS correction data that can improve GPS accuracy. developed. Some can correct the data in realtime The beacon stations use marine radio beacon fre- (differential GPS and the wide area augmentation quencies to transmit correction data to the remote GPS system). Others apply the corrections after the GPS receiver. The correction data typically provides 1- to data has been collected (postprocessing). 5-meter accuracy in real time. In theory, all methods of correction should yield similar In principle, this process is quite simple. A GPS receiver results. However, because of the location of different normally calculates its position by measuring the time it reference stations, and the equipment used at those takes for a signal from a satellite to reach its position. stations, the different methods do produce different Because the GPS receiver knows exactly where results. -
963837070-MIT.Pdf
Characterization of Redundant UHF Communication Systems for CubeSats by Stephen J. Shea Jr. B.S. Astronautical Engineering United States Air Force Academy, 2014 SUBMITTED TO THE DEPARTMENT OF AERONATICS AND ASTRONAUTICS IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN AERONAUTICS AND ASTRONAUTICS AT THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY JUNE 2016 C 2016 Massachusetts Institute of Technology. All rights reserved. Signature of Author: Signature redacted Department of AfironauticWoUnd XeronaTtics May 19, 2016 Certified by: _____Signature redacted KerCahoy Assistant Professor of Aeronautics and Astronautics Thesis Supervisor Accepted by: Signature redacted / Paulo C. Lozano Associate Professor of Aerofautics and Astronautics Chair, Graduate Program Committee MASSACHUSETTS INSTITUTE OF TECHNOLOGY JUN 2 8 2016 LIBRARIES ARCHIVES The opinions expressed in this thesis are the author's own and do not reflect the view of the United States Air Force, the Department of Defense, or the United States government. 2 Characterization of Redundant UHF Communication Systems for CubeSats by Stephen Joseph Shea, Jr Submitted to the Department of Aeronautics and Astronautics on , in partial fulfillment of the requirements for the degree of Master of Science in Aeronautics and Astronautics Abstract In this thesis we describe the process of determining the likelihood of two different Ultra High Frequency (UHF) radios damaging each other on orbit, determining how to mitigate the damage, and testing to prove the radios are protected by the mitigation. The example case is the Microwave Radiometer Technology Acceleration (MiRaTA) CubeSat. We conducted a trade study over three available radio architectures: primary radio and a beacon, high speed primary and low speed backup radios, and two fully capable radios. -
Reasons, Rewards, Regrets: Privacy Considerations in Location Sharing As an Interactive Practice
Reasons, Rewards, Regrets: Privacy Considerations in Location Sharing as an Interactive Practice Sameer Patil, Greg Norcie, Apu Kapadia Adam J. Lee School of Informatics and Computing Department of Computer Science Indiana University University of Pittsburgh 901 E 10th St 210 S Bouquet St Bloomington, IN 47408 USA Pittsburgh, PA 15260 USA {patil, gnorcie, kapadia}@indiana.edu [email protected] ABSTRACT systems focused on enabling collaborators to locate each Rapid growth in the usage of location-aware mobile phones other (e.g., [25, 36]). Such systems typically required orga- has enabled mainstream adoption of location-sharing ser- nizations to install their own location-mapping infrastruc- vices (LSS). Integration with social-networking services ture, either developed in-house by the organization or pur- (SNS) has further accelerated this trend. To uncover how chased from companies such as Ubisense, which offers a 3D localization infrastructure. To scale globally without such these developments have shaped the evolution of LSS usage, 1 we conducted an online study (N = 362) aimed at under- custom infrastructure, services such as Dodgeball allowed standing the preferences and practices of LSS users in the users to send their current locations as text messages to US. We found that the main motivations for location sharing the service, which then alerted friends if they opportunis- were to connect and coordinate with one's social and pro- tically happened to be near each other. Eventually WiFi fessional circles, to project an interesting image of oneself, and GPS-based localization built into smartphones led to and to receive rewards offered for `checking in.' Respon- the development of various stand-alone location-sharing ser- dents overwhelmingly preferred sharing location only upon vices (LSS) such as Foursquare (https://www.foursquare. -
Design of Bluetooth Low Energy Based Indoor Positioning System
BALKAN JOURNAL OF ELECTRICAL & COMPUTER ENGINEERING, Vol. 5, No. 2, September 2017 60 Design of Bluetooth Low Energy Based Indoor Positioning System D. Taşkın Abstract— Nowadays, there is an increasing demand for indoor II. INDOOR POSITIONING positioning systems as services based on location are very important in mobile applications. Since Global Positioning System The goal of an indoor positioning system is to make indoor (GPS) makes only outdoor positioning successful, there is a need locations to be identified by using sensor nodes. This system of new approaches for indoor positioning systems. Some uses specific location information gathered from sensor nodes techniques on indoor positioning systems have been proposed in for navigation support. This system could find a possible usage this scope, but they have not reached to the success of outdoor in hospitals, universities, museums and shopping malls. Indoor systems in terms of speed, consistency and power management. location information can be used for navigation, giving The aim of this study is to develop an indoor positioning system using latest Bluetooth Low Energy (BLE) technology. This system information about a specific place, collecting customers consists of BLE sensor nodes, a mobile device and a mobile behaves, helping people with limited vision to navigate and application that calculates indoor position by measuring the signal connecting people who are in close proximity. levels of the sensor nodes designed. BLE sensor nodes have low For this purpose, several systems have been developed over power consumption and can be powered by a coin battery. Since the last decade. One of them is based on Wi-Fi technology, most consumers have a mobile phone today, the system can be used which requires many access points and has lack of accuracy [1]. -
Location-Based Services: Industrial and Business Analysis Group 6 Table of Contents
Location-based Services Industrial and Business Analysis Group 6 Huanhuan WANG Bo WANG Xinwei YANG Han LIU Location-based Services: Industrial and Business Analysis Group 6 Table of Contents I. Executive Summary ................................................................................................................................................. 2 II. Introduction ............................................................................................................................................................ 3 III. Analysis ................................................................................................................................................................ 3 IV. Evaluation Model .................................................................................................................................................. 4 V. Model Implementation ........................................................................................................................................... 6 VI. Evaluation & Impact ........................................................................................................................................... 12 VII. Conclusion ........................................................................................................................................................ 16 1 Location-based Services: Industrial and Business Analysis Group 6 I. Executive Summary The objective of the report is to analyze location-based services (LBS) from the industrial -
“PNT in 5G”- Clarification No. 2 to Invitation to Tender: AO/1-10516/20
ESA UNCLASSIFIED – For ESA Official Use Only Thematic Window dedicated to “PNT in 5G”- Clarification no. 2 to Invitation to Tender: AO/1-10516/20/NL/MP/mk (Issue 1.0) NAVISP Element 2 9th October 2020 Potential Tenderers are invited to take note of the following Clarification to the above Call for Proposals: In the framework of this permanent Open Call for Proposals under NAVISP Element 2, the European Space Agency (ESA) is opening a Thematic Window dedicated to “PNT in 5G”. Tenderers are hereby invited to submit an Outline Proposal on this topic preferably by January 31st 2021, within the Open Call overall duration. Further proposals on the topic could still be submitted after that deadline. They may not however benefit from the increased visibility and priority that this Thematic Window will offer. The scope of the Thematic Window is to support the implementation of pilot projects to demonstrate the contribution that the new 5G technology can do to address the PNT needs of users operating in a 5G environment, being these needs not yet adequately satisfied with the current technologies. Namely: Industry 4.0 applications in indoor environments and the related seamless outdoor/indoor scenarios Complementary PNT solutions for critical applications Network time and frequency distribution applications The Tenderers shall justify the interest of their project on the basis of: - the contribution of the project results to the consolidation of the economic viability of the introduction of a PNT related feature/service in the operational 5G networks, or - the contribution of the results to advance the definition of future releases of the standards. -
A Survey of Indoor Localization Systems and Technologies Faheem Zafari, Student Member, IEEE, Athanasios Gkelias, Senior Member, IEEE, Kin K
1 A Survey of Indoor Localization Systems and Technologies Faheem Zafari, Student Member, IEEE, Athanasios Gkelias, Senior Member, IEEE, Kin K. Leung, Fellow, IEEE Abstract—Indoor localization has recently witnessed an in- cities [5], smart buildings [6], smart grids [7]) and Machine crease in interest, due to the potential wide range of services it Type Communication (MTC) [8]. can provide by leveraging Internet of Things (IoT), and ubiqui- IoT is an amalgamation of numerous heterogeneous tech- tous connectivity. Different techniques, wireless technologies and mechanisms have been proposed in the literature to provide nologies and communication standards that intend to provide indoor localization services in order to improve the services end-to-end connectivity to billions of devices. Although cur- provided to the users. However, there is a lack of an up- rently the research and commercial spotlight is on emerging to-date survey paper that incorporates some of the recently technologies related to the long-range machine-to-machine proposed accurate and reliable localization systems. In this communications, existing short- and medium-range technolo- paper, we aim to provide a detailed survey of different indoor localization techniques such as Angle of Arrival (AoA), Time of gies, such as Bluetooth, Zigbee, WiFi, UWB, etc., will remain Flight (ToF), Return Time of Flight (RTOF), Received Signal inextricable parts of the IoT network umbrella. While long- Strength (RSS); based on technologies such as WiFi, Radio range IoT technologies aim to provide high coverage and low Frequency Identification Device (RFID), Ultra Wideband (UWB), power communication solution, they are incapable to support Bluetooth and systems that have been proposed in the literature. -
Glenbard West Student Handbook
2021 - 2022 CASTLE KEYS GLENBARD WEST HIGH SCHOOL Glenbard West High School Glenbard District Office 670 Crescent Blvd. 596 Crescent Blvd. Glen Ellyn, IL 60137 Glen Ellyn, IL 60137 Telephone (630) 469-8600 Telephone (630) 469-9100 Fax (630) 469-8615 Fax (630) 469-9107 www.glenbardwesths.org www.glenbard87.org SCHOOL ADMINISTRATION Dr. Peter Monaghan Principal Mr. Christopher Mitchell Assistant Principal, Student Services Ms. Stacy Scumaci Assistant Principal, Operations Dr. Rebecca Sulaver Assistant Principal, Instruction Mr. Joe Kain Assistant Principal, Athletics Mr. Jordan Poll Dean of Students Mr. Peter Baker Dean of Students Ms. Celeste Rodriguez Dean of Students BOARD OF EDUCATION Ms. Judith Weinstock, President Ms. Margaret DeLaRosa, Vice President Mr. Robert Friend, Parliamentarian Mr. Kermit Eby Mr. John Kenwood Ms. Martha Mueller Ms.Mireya Vera Dr. David Larson, Superintendent Table of Contents ATHLETICS A-42 Coaching Staff A-42 Interscholastic A-42 ATTENDANCE A-35 CONDUCT AND DISCIPLINE A-37 Behavior Intervention Assignment (B.I.A.) A-41 Bullying/Harassment/Intimidation A-38 Bus Conduct A-38 Detention A-41 Disciplinary Consequences A-40 Dress Code A-22 Extended Day Detention (E.D.D.) A-41 Electronic Devices A-31 Out of School Suspension A-41 Restorative Intervention Alternative (R.I.A.) A-41 Search & Seizure A-42 DISTRICT 87 INFORMATION AND BOARD A - 51 POLICIES SCHOOL COUNSELING SERVICES A-27 Counselor Assignments A-27 STUDENT ACTIVITIES A-43 HEALTH CENTER A-28 P.E. Medicals A-28 LIBRARY MEDIA DEPARTMENT A-29 Elliott Library -
Worldwide Availability of Maritime Medium-Frequency Radio Infrastructure for R-Mode-Supported Navigation
Journal of Marine Science and Engineering Article Worldwide Availability of Maritime Medium-Frequency Radio Infrastructure for R-Mode-Supported Navigation Paul Koch * and Stefan Gewies German Aerospace Center (DLR), Institute of Communications and Navigation, Kalkhorstweg 53, 17235 Neustrelitz, Germany; [email protected] * Correspondence: [email protected] Received: 10 January 2020; Accepted: 11 March 2020; Published: 18 March 2020 Abstract: The Ranging Mode (R-Mode), a maritime terrestrial navigation system under development, is a promising approach to increase the resilient provision of position, navigation and timing (PNT) information for bridge instruments, which rely on Global Navigation Satellite Systems (GNSS). The R-Mode utilizes existing maritime radio infrastructure such as marine radio beacons, which support maritime traffic with more reliable and accurate PNT data in areas with challenging conditions. This paper analyzes the potential service, which the R-Mode could provide to the mariner if worldwide radio beacons were upgraded to broadcast R-Mode signals. The authors assumed for this study that the R-Mode is available in the service area of the 357 operational radio beacons. The comparison with the maritime traffic, which was generated from a one-day worldwide Automatic Identification System (AIS) Class A dataset, showed that on average, 67% of ships would operate in a global R-Mode service area, 40% of ships would see at least three and 25% of ships would see at least four radio beacons at a time. This means that R-Mode would support 25% to 40% of all ships with position and 67% of all ships with PNT integrity information. -
Methods of Radio Direction Finding As an Aid to Navigation
FWD : MWB Letter 1-6 DP PA RT*«ENT OF COMMERCE Circular BUREAU OF STANDARDS No. 56 WASHINGTON (March 27, 1923.)* 4 METHODS OF RADIO DIRECTION F$JDJipG AS AN AID TO NAVIGATION; THE RELATIVE ADVANTAGES OB£&fmTING THE DIRECTION FINDER ON SHORg$tgJFcN SHIPBOARD By F. W, Dunmo:^, Associate Physicist Now that the great value of the radio direction finder as an aid to navigation is being generally recognized, consider- able importance attaches to the question whether Its proper location is on shipboard, in the hands of the navigator, or on shore. The essential part of a radio direction finding equipment or '‘radio compass'' consists of a coil of wire usually wound on a frame from four to five feet square, so mounted as to be rotatable about a vertical axis. Suitable radio receiving apparatus is connected to this coil for the reception of the radio beacon signals. The construction and operation of the direction finder have been discussed in detail in Bureau of Standards Scientific Paper No. 438, by F.A.Kolster and F.W. Dunmore, to which the reader may refer for further . informa- tion.* The present paper is concerned primarily with a com- parison of the relative advantages of the location of the •direction finder on shore and on shipboard, The two methods may be briefly described as follows; 1. Direction Finder on Shore. --This method, usually con- sists in the use of two or more radio direction finder station installations on shore, each of these compass stations being connected by wire to a controlling transmitting station. -
Location Awareness Using Mobile Application
International Journal of Trend in Research and Development, Volume 5(1), ISSN: 2394-9333 www.ijtrd.com Location Awareness Using Mobile Application 1Dr.Oye, N. D. and 2Jemimah, Nathnaiel, 1,2Department of Computer Science, Modibbo Adama University of Technology, Yola, Nigeria Abstract: Location awareness using mobile application could the review are to enable users locate places with ease and To allow friends to view each other‘s locations on a map to make help users to become more social by knowing each other‗s meeting up easier. The application has proved to be highly whereabouts useful with a lot of advantages such as being able to navigate Location Awareness to another user and another form of communication medium when phone call or text messaging fails. Further work should One of the unique features of mobile application is location be done on the system.on the location awareness system which awareness. Mobile users bring their devices with them gives the users‘ current location, sends this location using SMS everywhere, and adding location awareness to your app offers plus sharing location with friends and views them on Google users a contextual experience. Location according to maps. Users can also take benefit of this application in Wikipedia is defined as a point or an area on the earth‗s emergency situations by using emergency feature of these surface or elsewhere. It is a specific position point in physical applications. A mobile client who consists of a mobile and space. Location awareness refers to devices that can passively GPS receiver finds the locations of the user to get aware of his or actively determine their location. -
Location-Aware Communications for 5G Networks
Chalmers Publication Library Location-aware Communications for 5G Networks This document has been downloaded from Chalmers Publication Library (CPL). It is the author´s version of a work that was accepted for publication in: IEEE signal processing magazine (ISSN: 1053-5888) Citation for the published paper: Di Taranto, R. ; Muppirisetty, L. ; Raulefs, R. (2014) "Location-aware Communications for 5G Networks". IEEE signal processing magazine, vol. 31(6), pp. 102-112. Downloaded from: http://publications.lib.chalmers.se/publication/208857 Notice: Changes introduced as a result of publishing processes such as copy-editing and formatting may not be reflected in this document. For a definitive version of this work, please refer to the published source. Please note that access to the published version might require a subscription. Chalmers Publication Library (CPL) offers the possibility of retrieving research publications produced at Chalmers University of Technology. It covers all types of publications: articles, dissertations, licentiate theses, masters theses, conference papers, reports etc. Since 2006 it is the official tool for Chalmers official publication statistics. To ensure that Chalmers research results are disseminated as widely as possible, an Open Access Policy has been adopted. The CPL service is administrated and maintained by Chalmers Library. (article starts on next page) 1 Location-aware Communications for 5G Networks Rocco Di Taranto, L. Srikar Muppirisetty, Ronald Raulefs, Dirk Slock, Tommy Svensson, and Henk Wymeersch Abstract—5G networks will be the first generation to benefit path'loss distance Doppler velocity ⌘ x x − fD = x˙ (t) /λ from location information that is sufficiently precise to be || − s|| || || leveraged in wireless network design and optimization.