The next general meeting of the ION North Star Section will be Tuesday, Oct 3th in Mechanical Engineering Building Room 1130 at the University of Minnesota (http://campusmaps.umn.edu/tc/map.php?building=265), starting at 6:00 PM. Tom Jakel of the University of Minnesota will be the keynote speakers. Tom will give a presentation entitled “Use of Trunk Roll Constraint to Improve Heading Estimation in Pedestrian Dead Reckoning Navigation Systems.” This presentation is co-authored with Demoz Gebre-Egziabher of the University of Minnesota Sandwiches and beverages will be served during the Meet and Greet portion of the meeting. Please email us at firstname.lastname@example.org, if you plan to attend. Agenda: 6:00 Meet and Greet 6:30 Keynote Speaker 7:45 Section Business 8:00 Final remarks Keynote presentation: Title: Use of Trunk Roll Constraint to Improve Heading Estimation in Pedestrian Dead Reckoning Navigation Systems: Authors: T. Jakel ,Honeywell; D. Gebre-Egziabher, University of Minnesota, Twin Cities Abstract: A method for increasing the accuracy of the heading estimate in IMU-based personal navigation system will be discussed. Heading estimation without use or emittance of any external electromagnetic signals for reference is a critical but challenging component of pedestrian dead reckoning navigation systems. In the environments where these systems are normally used, electromagnetic signals may be unavailable. custodia iphone outlet Even when available, these signals may be intentionally or inadvertently corrupted for an extended period of time. custodia samsung s8 In such environments, the navigation system must determine initial heading through gyro-compassing or using information from other sensors such as magnetometers or radio frequency multilateration systems. iphone 7 custodia outlet Subsequently, these external measurements may be used periodically to arrest the heading drift when signal conditions and trajectory allow it. Due to the size, weight, power, and cost constraints imposed on a pedestrian navigation systems as well as current IMU performance limitations, the gyroscopes used to determine heading have significant drift. To deal with this drift problem without having to rely on information external to the navigator, the use of human motion models as constraints has been proposed. cover samsung custodia For example, one such motion model used as a constraint predicts the onset of turning motion of the pedestrian by thresholding the outputs of the yaw gyroscope. For example, unless a significant yaw rate is detected, the user is assumed to be moving in a straight line. samsung custodia outlet This gyroscope is also integrated to determine the change in angle over the period of turning, such constraints delay the open loop gyro integration time onset which increases the accumulated drift, especially for sudden turns, which can occur during indoor navigation. The use of the trunk roll angle and angular rate are presented as additional signals used to predict the onset of pedestrian turning motion. The signature of the trunk roll motion relative to foot and body reorientation is described. Integration of the trunk roll motion based turning prediction method with existing yaw threshold methods is described and analyzed. Experimental data from ten subjects was captured in a gait laboratory, where a Vicon motion tracking unit is used for validation. In these experiments the subjects were instrumented with five low cost IMU units; one on the right foot, one on the right ankle, one on the right thigh, one on the lower back and one on the chest. The outputs of the foot-mounted IMUs are used with Zero Velocity Updates (ZUPTs) to determine the subject’s gross body motion. The torso mounted IMUs are used to sense upper body motion and this information is used in activating the trunk-roll constraint. The analysis of experimental data demonstrates that trunk rolling motion precedes heading change and can be used together with yaw rate threshold methods to predict the onset of a turning motion.
Please join us and be a part of the Avionics in the Midwest Lecture Series. In this Lecture Series, we will explore the accomplishments of those who have made significant contributions to the field of Avionics. Each lecture will focus on a particular Guidance, Navigation, and Control technology, the history and impact of the technology, the professional and personal relationships of those involved in the development of the technology, and the theory behind the technology. In the field of engineering, our current accomplishments are built on existing technologies and accomplishments of those who came before us. This Lecture Series explores significant technologies developed by engineers who came before us that we use and take for granted today. Further, this Lecture Series explores the technologies developed by engineering graduate students as they test and extend the limits of the current technologies. The Twin Cities Section of the American Institute of Aeronautics and Astronautics (AIAA) and the North Star Section of the Institute of Navigation (ION) are proud to continue to host a Lecture Series that explores the history and impact of the technology and engineering behind avionics systems. In this third part of the Lecture Series, the AIAA and ION are pleased to welcome Dr. Wouter Pelgrum of Ohio University and Mr. Hamid Mokhtarzadeh of the University of Minnesota. Dr. Pelgrum is a dynamic speaker with both academic and industrial experience who will share his experiences and thoughts on navigation in GNSS denied environments. Mr. coque iphone xr Mokhtarzadeh is a Ph.D. candidate who will discuss the fusion of correlated random vectors which has applications in many real world navigation problems. Avionics Lecture Schedule: Date: Wednesday, 11 December 2013 Event Schedule: 6:00 – 6:30 pm Meet and Greet 6:30 – 7:00 pm Presentation: Mr. Hamid Mokhtarzadeh 7:00 – 8:30 pm Presentation: Dr. Wouter Pelgrum Event Location: Akerman Hall: Aerospace Engineering & Mechanics Hangar University of Minnesota 110 Union Street SE Minneapolis, MN 55455-0153 Dinner: Compliments of AIAA and ION RSVP: Please email us at email@example.com if you plan to attend Presentations: Presenter: Dr. Wouter J. Pelgrum Title: High-Performance Positioning, Navigation, and Timing When GPS is Not Available Abstract: The American GPS system has made ultra-precise Positioning, Navigation, and Timing (PNT) virtually ubiquitous, affordable, and available worldwide to everyone. And satellite navigation is only getting better with the other existing and upcoming Global Navigation Satellite Systems (GNSS): GLONASS (Russia), Galileo (Europe), Beidou/Compass (China), QZSS (Japan), and IRNSS (India). iphone cover outlet The unsurpassed performance of GNSS and its low user cost has fueled a wide range of applications, such as Personal Navigation Devices (PND) in cars, Automatic Identification System (AIS) for shipping, and Automatic Dependent Surveillance – Broadcast (ADS-B) for aviation. And not to forget GNSS time and frequency that is used for the synchronization of, for example, electrical power grids, communication systems, and financial networks. With the growing number of GNSS-PNT applications there is also an increasing dependency: GNSS has become part of the world’s critical infrastructure, with significant safety, environmental, and economical impact associated with the unavailability or failure of GPS or other GNSS. The low received signal power, intrinsic to satellite systems, makes GNSS vulnerable to jamming and spoofing. Furthermore, solar events can cause significant ionosphere scintillation and thereby hinder acquisition and tracking of the L-band GNSS signals. Over the past decade, there has been a significant and ongoing effort to improve the robustness of PNT: GNSS receiver and satellite technology have been improved, and GNSS has been integrated with a variety of sensors. Examples of multi-sensor integration are the combination of GNSS with inertial, barometric, vision, LIDAR, radar, and WIFI-based navigation solutions. All these new developments make you almost forget we navigated long before GPS was even conceived. Mariners navigated using celestial methods, and with systems such as Loran, Decca, and Omega. coque iphone x Aviators used, and often still use, NDB, VOR, DME, and Loran. This presentation focuses on the legacy radio navigation systems Loran-C (100 kHz) and DME/N (1 GHz), their working principles, performance, past and current usage, and their potential for future applications. Loran-C’s legacy position performance of 0.25 nmi and DME/N’s ranging performance of 0.2 nmi are no match for most of today’s stringent performance requirements, which necessitates system enhancements. The maritime “Harbor Entrance and Approach” (HEA) procedure, for example, requires 8-20 m 95% positioning accuracy. A completely overhauled Loran-C system called “eLoran” makes this possible with modern solid-state transmitters, DSP receiver technology, novel receiver antenna design, and compensation of propagation-induced errors using differential corrections and ASF correction maps. HEA eLoran measurements in Tampa Bay Florida in 2004 demonstrated better-than 10 meter accuracy. Now, almost a decade later, Great Britain is rolling out eLoran services for all their major harbors. This is one of the examples of eLoran technology and applications that will be presented, together with land-mobile, maritime, and airborne measurement results. The aviation community faces a challenge similar to that of the maritime community: GPS has enabled enhanced procedures at low cost, but how to protect against GPS outages? FAA’s Alternative Positioning, Navigation, and Time (APNT) program is tasked with that challenge. One of the candidate architectures is the Distance Measuring Equipment (DME) system. The legacy DME/N system is only specified to 0.2 nmi ranging performance, with DME/DME/IRU specified to the RNAV 1 level (approximately 1610m 95% positioning performance). cover shop online The APNT target performance is RNP 0.3, or 370 m 95%, with integrity. Various techniques are under consideration to improve DME’s performance such as upgraded, state-of-the-art ground-station and avionics equipment. soldes coque iphone More revolutionary performance enhancements are obtained by novel techniques such as DME carrier phase, beat signal, and pulse modulation and TOA determination techniques. A brief overview of these techniques will be presented accompanied by flight test results and an outlook on the future of the system. Biography: Dr. Wouter J. Pelgrum is an Assistant Professor of Electrical Engineering at Ohio University where he teaches electronic navigation-related courses. His research programs include GNSS, Inertial, DME, Loran, Time and Frequency transfer, integrated navigation systems, and advanced ground/flight test instrumentation systems. Prior to joining Ohio University in 2009, Wouter worked in private industry where he contributed to the development of an integrated GPS-eLoran receiver and antenna. From 2006 until 2008, Wouter operated his own company specializing in navigation-related research and consulting. Presenter: Mr. Hamid Mokhtarzadeh Title: Data Fusion when Correlation Matters Abstract: The problem of fusing two or more uncertain quantities arises in aerospace applications. When the correlation between the quantities are zero (or known), the Kalman filter (or an alternative formulation) is an effective fusion algorithm. However, some amount of correlation is common, and if left unrestricted, this correlation could lead to filter divergence. In this talk I describe scenarios where handling correlation is important. coque iphone 7 This is followed by the presentation of a fusion technique, known as covariance intersection, for handling unknown correlation. huawei custodia Finally, an automotive application simulation is used to demonstrate the performance of the filters. Biography: Mr. Hamid Mokhtarzadeh is a Ph.D. coque iphone 8 candidate in the Department of Aerospace Engineering and Mechanics at the University of Minnesota. He earned a B.S. coque iphone 8 and M.S. iphone cover original in Aerospace Engineering and Mechanics from the University of Minnesota. His M.S. research focused on modeling and control of dynamical systems. Hamid’s current interests include data analysis and visualization, estimation, and integrated navigation systems.
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The next general meeting of the ION North Star Section will be Thursday May 17th in Mechanical Engineering Building Room 1130 at the University of Minnesota (http://campusmaps.umn.edu/tc/map.php?building=265). custodia iphone outlet acheter coque iphone en ligne The keynote speaker at this meeting will be a presentation on the Design and Analysis of Safety Critical Systems by Peter Seiler from the University of Minnesota. Please email us at firstname.lastname@example.org, if you plan to attend. custodia iphone Agenda: 6:00 Meet and Greet 6:30 Keynote Speaker 7:45 Section Business 8:00 Closing remarks Sandwiches and beverages will be served during the Meet and Greet portion of the meeting. The keynote presentation will be: Title: Design and Analysis of Safety Critical Systems Presenter: Peter Seiler (University of Minnesota) Abstract: The FAA (US) and JAA (European) certification authorities impose high demands on the reliability of safety-critical aircraft systems. cover iphone outlet coque iphone The high degree of reliability is typically achieved through the use of physically redundant components. custodia huawei shop coque iphone xs Commercial aircraft such as the Boeing 777 have redundant control surfaces, sensors, processors, hydraulic lines, and communication networks. cover iphone custodia coque iphone soldes This talk will first review the design challenges associated with redundancy management for commercial aircraft. One drawback of physical redundancy is the increased size, cost, weight, and power requirements. Some aircraft, e.g. custodia outlet samsung s8 UAVs, cannot be designed to meet the conflicting design requirements imposed by the use of physical redundancy for reliability. coque iphone Model-based fault detection provides an alternative means to achieve high levels of reliability without using redundant physical hardware. coque iphone x These analytical methods detect faults using dynamic models to relate the behavior of various subsystems and sensor measurements. coque iphone xr Systems that use analytical redundancy must also demonstrate the required levels of reliability to certification authorities. A major obstacle to the use of analytical fault detection in aerospace systems is the lack of appropriate tools to analyze and certify the performance of these systems.
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The North Star Section completed it initial planning for our general meetings from Sept 2012 to June 2013. custodia samsung galaxy coque iphone xr Calendar of Events:
- Approx Oct 30, cover iphone 7 custodia outlet coque iphone 7 2012: General Meeting (Tentative: John Raquet USAF, cover samsung custodia coque iphone x Alternative Nav)
- Approx Early Dec: General Meeting (Tentative: Speaker TBD)
- January 25-27: Annual Snow plow competition at the St. custodia samsung coque iphone xs max Paul Winter Carnival
- Month of Feb: General Meeting: Tour of local company.
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The next general meeting of the ION North Star Section will be Tuesday, Oct 30th in Mechanical Engineering Building Room 1130 at the University of Minnesota (http://campusmaps.umn.edu/tc/map.php?building=265), starting at 6:00 PM. John F. custodia samsung shop Raquet, the keynote speaker, will give a presentatation is entitled “Magnetic Field-Based Navigation and the Need for Self-Building World Models.” Sandwiches and beverages will be served during the Meet and Greet portion of the meeting. Please email us at email@example.com, if you plan to attend. Agenda: 6:00 Meet and Greet 6:30 Keynote Speaker 7:45 Section Business 8:00 Closing remarks Keynote presentation: Speaker: John F. cover iphone outlet Raquet John F. cover custodia iphone coque iphone Raquet is the Director of the Advanced Navigation Technology (ANT) Center at the Air Force Institute of Technology (AFIT), where he is also an Associate Professor of Electrical Engineering. The ANT Center consists of 22 faculty members, 6 staff members, and over 40 students working to solve a wide variety of problems related to autonomy and navigation. Dr. custodia samsung outlet Raquet directly supervises the research of 6-10 MS and PhD students. He has a PhD in geomatics engineering from the University of Calgary, a masters in aero/astro engineering from the Massachusetts Institute of Technology, and a BS in astronautical engineering from the U.S. coque iphone 2019 Air Force Academy. He has published over 140 navigation-related conference and journal papers and taught 44 navigation-related short courses to over 1500 students in many different organizations. cover iphone 7 plus custodia outlet He just completed his term as Chairman of the Satellite Division of the Institute of Navigation, and he is an ION Fellow. coque iphone 7 Abstract: Magnetic Field-Based Navigation and the Need for Self-Building World Models Variations in Earth’s magnetic field present a practical source of navigation information. samsung custodia outlet A magnetometer and magnetic field maps can be used for determining position ground vehicles in a variety of environments. cover iphone 8 custodia outlet coque iphone xs max This presentation describes a navigation approach using only a magnetometer and magnetic field maps created in the same vehicle, as well as navigation when magnetic field maps are created in a vehicle of a different type. Pairing the three-axis magnetometer measurements with position information creates a magnetic field map containing the variation and localized perturbations in Earth’s magnetic field as a function of position. For navigation solutions, a particle filter uses the three-axis magnetometer measurements to produce road-level navigation exploring three suburban environments. The results demonstrate navigation using magnetic field variations in large vehicles is viable and achieves good performance for road-level navigation in suburban areas. Additionally, I will use this system as an example of the need to develop improved methods for generating what I call “self-building world models”–that is, to have the capability of efficiently generating maps of natural features (such as the magnetic field) without the need for a large-scale measurement campaign.
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The next general meeting of the ION North Star Section will be Wednesday Dec 14th in Mechanical Engineering Building Room ME 1130 at the University of Minnesota (http://campusmaps.umn.edu/tc/map.php?building=265). Please email us at firstname.lastname@example.org, if you plan to attend. iphone cover outlet The agenda for the meeting is: 6:00 Meet and Greet 6:30 Welcome 6:35 Keynote Speaker 7:30 Closing remarks Sandwiches and beverages will be served during the Meet and Greet portion of the meeting. cover custodia samsung Keynote Presentation: Title: Ionosphere Effects and other GNSS and RF Navigation Research at Miami Presenter: Jade Morton, Professor at Miami University Abstract: The ionosphere is a dynamic medium characterized by irregularities in electron density distributions which cause refraction, scattering, and diffraction of GNSS signals that traverse the ionosphere. The results of these signal interactions with the ionosphere are highly variable signal group delays and carrier advances, deep signal amplitude fading, and random carrier phase fluctuations. custodia samsung s8 While the group delay and carrier advances cause GPS range measurement errors which cannot be totally eliminated by the current state-of-the-art receivers, the signal amplitude fading and carrier phase fluctuations, collectively referred to as ionospheric scintillations, may result in receiver loss-of-lock of satellite signals. These ionosphere effects pose a serious challenge for applications that require continuous and high accuracy measurements. In this presentation, I will focus on two of our current research efforts in ionosphere effects. iphone cover outlet The first effort aims to assess the higher order ionosphere error in GPS receiver range measurements and to characterize the higher order error temporal and spatial structure. The second study concerns the establishment of a multi-constellation, multi-band GNSS receiver array in Alaska to collect GNSS signals under both natural and controlled ionospheric scintillation conditions, and the development of robust GPS receiver algorithms for the estimation of satellite signal parameters. Technical approaches, recent findings, and significance of both projects will be discussed in the presentation. Additional research activities involving short delay time GPS multipath estimation and mitigation, multi-use of ultra-wideband radar for imaging, communication, and navigation, and a few navigation application projects will be briefly highlighted Biography: Dr. Jade Morton is a Professor in the Department of Electrical and Computer Engineering at Miami University. She holds a BS in Physics from Nanjing University, China, a MS in Electrical Engineering from Case Western Reserve University, a MS in Systems Analysis from Miami University, and a PhD in Electrical Engineering from the Pennsylvania State University. She was a post-doctoral research fellow at the University of Michigan Space Physics Research Laboratory working on satellite-based remote sensing of the atmosphere. Her current research interests are in high accuracy and high sensitivity GNSS receiver algorithms, ionosphere effects on GNSS performance, software defined UWB radar for navigation, and navigation sensor integration and applications. custodia huawei outlet She has served in various capacities at the Institute of Navigation (ION) and IEEE and chaired numerous sessions, tracks, workshops, and conferences for ION and IEEE. She is a member of the editorial board of the journal GPS Solutions and is an associate editor for IEEE Transactions on Aerospace and Electronics Systems. She is also a technical committee member of the IEEE Microwave Theory and Technology Society, Digital Signal Processing Subgroup. Dr. Morton has published over 100 technical papers, received over $3M in grants and contracts, and mentored hundreds of students on navigation related projects.
The North Star section’s premier outreach activity is the Snow Plow competition that will be held at the St. outlet coque iphone Paul Winter Carnival between Jan 26 and Jan 30. vente de coque iphone The purpose of this competition is to challenge university and college students, as well as the general public, to design, build, and operate a fully autonomous snowplow to remove snow from a designated path. custodia samsung coque iphone pas cher The objectives of this competition include encouraging students and individuals to utilize the state of the art in navigation and control technologies to rapidly, accurately, and safely clear a path of snow. coque iphone 8 Click here to view the web site for the competition. coque iphone 2019 The 2011 competitors are the Univ. of MN, Univ. of MI (Dearborn), Dunwoody College of Technology, Ohio University, Wright State (Ohio) and Miami University (Ohio). huawei custodia outlet The competition will be conducted at the Science Museum and near Rice park. cover custodia samsung On Jan 27th, at the Science Museum, each competitor will give their formal presentations bewteen 5:45 and 9:30 PM. cover custodia iphone On Jan 28th between 12 and 6 PM, the final qualification review will be conducted. coque iphone xr The actual snow plowing by the vehicles will be performed on Jan 29th between 8:45 AM and 1:30 PM and on Jan 30th between 9:45 AM and 2:15 PM. custodia outlet samsung s8 coque iphone en ligne The competitors will also participate in the Grand Day at 2:45 on Jan 30th.
2010 was an active year for the North Star section. cover iphone 6 custodia outlet During the year we sponsored 6 meetings for the general membership. iphone custodia Each activity included a social 1/2 hour during which sandwiches and beverages were served. cover shop online The social 1/2 hour was followed by a keynote speaker and then a short general meeting.
The election of Section officers for the North Star section has been completed. cover iphone outlet coque iphone 2019 soldes Wayne Soehren is the newly elected Publicity chair. cover iphone soldes coque iphone All other officers were reelected. iphone custodia outlet coque iphone xs max The officers will begin their one year terms on July 1, 2011. iphone cover original coque iphone x The 2011 section officers are: Chair: Mr. cover iphone 7 custodia outlet
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