Overview

Registration
  • 08:00-08:30
  • 28.06
Attendee registration.

Plenary 1: Ignacio Fernández, "Galileo authentication - What, when and why"
  • 08:40
  • 28.06
GNSS authentication, or the lack thereof, has been a subject of intense discussion over more than a decade in the satellite navigation community. However, no GNSS currently provides any authentication features to its open service users. Galileo, the European satellite navigation system, has been studying the addition of authentication for its services. This new feature is in the pipeline for its operational provision by the end of the decade. This talk will present the authentication message and signal defined in the Galileo E1 (Open Service) and E6 (Commercial Service), the service provision roadmap, and the performance and security levels obtained in the lab and field testing.
The translation of GNSS authentication features to secured services in consumer and professional receivers may lead to some innovations and standards in the future. Some open points and challenges in this area will also be presented. They relate to key management, combination of authenticated and non-authenticated signals and sensors, authentication in an A-GNSS context where most receivers will operate, and integration of an authentication status in the existing location services

Session 1: Security aspects in GNSS
  • 09:40
  • 28.06
Session chair: Joaquim Fortuny-Guasch, European Commission, Joint Resarch Center (JRC), Italy.

"Galileo Signal Authenticity Verification Using Signal Quality Monitoring Methods"
Jafarnia-Jahromi, Ali (1); Broumandan, Ali (1); Daneshmand, Saeed (1); Lachapelle, Gérard (1); Ioannides, Rigas T. (2)
1: UofC, Canada; 2: European Space Agency

"Evaluating the Security of One-way Key Chains in TESLA-based GNSS Navigation Message Authentication Schemes"
Caparra, Gianluca (1); Sturaro, Silvia (1); Laurenti, Nicola (1); Wullems, Christian (2)
1: University of Padova, Italy; 2: ESTEC, European Space Agency, The Netherlands

"Galileo NMA Signal Unpredictability and Anti-Replay Capabilities"
Fernández-Hernández, Ignacio (1); Seco-Granados, Gonzalo (2)
1: EC, Belgium; 2: UAB, Spain
Session 2: GNSS receivers (I/II)
  • 11:10
  • 28.06
Session chair: Gerard Lachapelle, University of Calgary, Canada.

"Time-effective GPS Time Domain Signal Acquisition Algorithm"
Alves de Albuquerque, Glauberto Leilson (1); Valderrama, Carlos (1); Costa Silva, Fabrício (2); Xavier-de-Souza, Samuel (2)
1: University of Mons, Belgium; 2: Federal University of Rio Grande do Norte, Brazil

"Design of Signal Acquisition and Tracking Process Based on Multi-Thread for Real-time GNSS Software Receiver"
Park, Kwi Woo (1); Suh, Jae-Won (1); Seo, Bo-Seok (1); Lee, Min Joon (2); Park, Chansik (1)
1: Chungbuk National University, Korea, Republic of (South Korea); 2: Agency for Defense Development, Korea, Republic of (South Korea)

"Extended prediction of QZSS orbit and clock"
Leppäkoski, Helena; Rautalin, Sakari; Zhang, Xiaolong; Ali-Löytty, Simo; Piché, Robert
Tampere University of Technology, Finland

"Sensitivity of GNSS Blind Interference Detection Algorithm Based on Fourth-order Autocumulants"
Sousa, Fernando Manuel Gomes (1); Nunes, Fernando Duarte (2)
1: Instituto de Telecomunicacoes and ISEL, Portugal; 2: Instituto de Telecomunicacoes and IST, Portugal

"Mitigation of False Locks in the Acquisition of High-Order BOC Signals in HS-GNSS Receivers"
Gómez-Casco, David (1); Garcia-Molina, José A. (2,3); Gusi-Amigó, Adrià (4); Crisci, Massimo (2); López-Salcedo, José A. (1); Seco-Granados, Gonzalo (1)
1: Dpt. Telecommunications and Systems Engineering, Universitat Autònoma de Barcelona (UAB), Spain; 2: European Space Agency (ESA/ESTEC), TEC-ETN, The Netherlands; 3: HE Space, The Netherlands; 4: Centre Tecnológic de Telecomunicacions de Catalunya (CTTC), Barcelona, Spain

Second part on 29.06
Plenary 2: Danijela Cabric, ”Localization in cognitive radio networks”
  • 14:00
  • 28.06
Cognitive Radio (CR) is a promising approach to efficiently utilize the scarce RF spectrum resource. In this paradigm, knowledge about spectrum occupancy in time, frequency, and space that is both accurate and timely is crucial in allowing CR networks to opportunistically use the spectrum, and avoid interference to a primary user (PU). In particular, information about PU location will enable several key capabilities in CR networks including improved spatio-temporal spectrum sensing, intelligent location-aware power control and routing, as well as aiding security and spectrum policy enforcement.
The PU localization problem in CR networks is in general different from localization in other applications such as Wireless Sensor Networks (WSN) and Global Positioning System (GPS), due to the following two features. First, a PU does not cooperate or communicate with CRs since they are opportunistic users of the PU spectrum band. Therefore, very limited knowledge about PU signaling, such as transmit power, modulation scheme and synchronization, is available to CRs. Second, since CRs need to detect and localize PUs in the entire coverage area at a very low signal-to-noise ratio (SNR), cooperation among a large number of CRs is necessary, which introduces important accuracy and complexity constraints.
In this talk, we will explore a set of CR cooperative localization algorithms for single and multiple PUs using different antenna configurations and available measurements, and analyze their cost performance trade-offs both theoretically and experimentally.​

Session 3: Cooperative and hybrid positioning
  • 15:20
  • 28.06
Session chair: Sunwoo Kim, Hanyang University, Korea.

"Cooperative Localization and Tracking using Multipath Channel Information"
Kulmer, Josef; Leitinger, Erik; Meissner, Paul; Hinteregger, Stefan; Witrisal, Klaus
Graz University of Technology, Austria

"Selection of Relevant Particles in Nonparametric Distributed Message Passing for Cooperative Localization"
Mendrzik, Rico; Lewandowsky, Jan; Bauch, Gerhard
Hamburg University of Technology, Germany

"Kalman-based mobility tracking with range-free localization under a realistic device distribution"
Kim, Hyowon (1); Kim, Junhyuk (1); Lee, Sangwook (2); Sin, Cheonsig (2); Park, Chansik (3); Lee, Minjoon (4); Kim, Sunwoo (1)
1: Hanyang University, Korea, Republic of (South Korea); 2: Department of Satellite Wireless Convergnce Research, Electronics and Telecommunications Research Institute, Korea, Republic of (South Korea); 3: School of Electronics Engineering, Chungbuk National University, Cheongju, Korea, Republic of (South Korea); 4: Agency for Defense Development, Daejeon, Korea, Republic of (South Korea)

"A Hybrid Localization Framework Supporting Multiple Standards and Manifold Post-Processing"
Gunia, Marco; Zhang, Bo; Joram, Niko; Ellinger, Frank
TU Dresden, Germany

"Grid Based Position Discovery"
Ergin, Mustafa Onur; Handziski, Vlado; Wolisz, Adam
Technische Universität Berlin, Germany
Plenary 3: Klaus Witrisal, ”High-accuracy positioning in multipath channels: localization-awareness for 5G networks”
  • 08:40
  • 29.06
Location-awareness is the capability of a mobile network to employ position information for the sake of operating more efficiently. It is foreseen that fifth-generation (5G) wireless networks will be able to exploit much more accurate position information than any previous generation of wireless networks. This comes naturally due to the increased bandwidth and the application of multi-antenna techniques, which will eventually turn multipath propagation from an enemy to a friend.
This talk will first highlight the impact of multipath propagation on the accuracy of wireless range and position estimation. The important influence of bandwidth and the benefit of MIMO processing will be analyzed. Next it will be shown how one can make use of multipath to benefit from improved positioning accuracy, robustness, and a relaxed need for infrastructure nodes. Analytical performance bounds, their experimental validation, and algorithms derived thereof will be discussed. Finally, it will be shown that a multipath-enabled positioning system is a showcase example of a cognitive dynamic system that can optimize the information gained from each measurement, exploiting its memory of past measurements to plan future measurements. The environment map it collects can be used to predict the propagation characteristics, yielding location-awareness for positioning and communications. It is concluded that the use of position information may become as important to 5G networks as other new, disruptive technologies such as massive MIMO and mm-wave.

Session 4: Positioning via 5G & UWB
  • 09:40
  • 29.06
Session chair: Fernando Nunes, Instituto de Telecomunicaçoes, Portugal.

"Feasibility Study of 5G-based Localization for Assisted Driving"
del Peral-Rosado, José Antonio (1); López-Salcedo, José Antonio (1); Kim, Sunwoo (2); Seco-Granados, Gonzalo (1)
1: Universitat Autònoma de Barcelona (UAB), Spain; 2: Hanyang University, South Korea

"Impact of Altitude Difference for Local Positioning Systems and Compensation with Two-Stage Filters"
Pelka, Mathias; Goronzy, Grigori; Hellbrück, Horst
Fachhochschule Lübeck Luebeck, Germany

"Belief Propagation based Joint Probabilistic Data Association for Multipath-Assisted Indoor Navigation and Tracking"
Leitinger, Erik (1); Meyer, Florian (2); Meissner, Paul (1); Witrisal, Klaus (1); Hlawatsch, Franz (2)
1: Graz University of Technology, Austria; 2: Vienna University of Technology, Austria
Session 5: GNSS receivers (II/II)
  • 11:10
  • 29.06
Session chair: Klaus Witrisal, Graz University of Technology, Austria

"Improving Detection of Incorrect GPS Carrier Phase Integer Ambiguity Solutions with the Ambiguity Filter"
Pereira, Rita (1); Sanguino, José (2)
1: Instituto Superior Técnico, Portugal; 2: Instituto de Telecomunicações, Instituto Superior Técnico, Portugal

"Robust Vector Tracking for GNSS carrier phase signals"
Marçal, José (1,2); Nunes, Fernando (1,2)
1: University of Lisbon, Portugal; 2: Instituto de Telecomunicações, Lisboa, Portugal

"A simplified Solar Radiation Pressure Model for GNSS autonomous orbit prediction"
Zhang, Xiaolong; Piche, Robert
Tampere University of technology, Finland

"Transient Change Detection for LOS and NLOS Discrimination at GNSS Signal Processing Level"
Egea-Roca, Daniel; Seco-Granados, Gonzalo; López-Salcedo, José A.
Universitat Autònoma de Barcelona (UAB), Spain

"Performance Evaluation in AltBOC Receivers Affected by Interference"
Nunes, Fernando Duarte (1); Nunes, Rui Filipe (2); Sousa, Fernando Manuel (3)
1: Instituto de Telecomunicacoes and IST, Portugal; 2: Instituto Superior Tecnico, Portugal; 3: Instituto de Telecomunicacoes and ISEL, Portugal
Session 6: Indoor navigation
  • 14:00
  • 29.06
Session chair: Joaquin Torres Sospedra, Universitat Jaume I, Spain

"Smoothing Indoor Trajectories"
Abadi, Aharon; Melamed, Roie; Packer, Eli; Shapira, Natalie
IBM Research Haifa

"Clustering benefits in mobile-centric WiFi positioning in multi-floor buildings"
Cramariuc, Andrei; Huttunen, Heikki; Lohan, Elena-Simona
TUT, Finland

"Data fusion approaches for WiFi fingerprinting"
Lohan, Elena-Simona (1); Talvitie, Jukka (1); Granados, Gonzalo-Seco (2)
1: TUT, Finland; 2: UAB, Spain
Session 7: RSS-based positioning
  • 15:20
  • 29.06
Session chair: Helena Leppäkoski, TUT, Finland.

"A BLE-Based Probabilistic Room-Level Localization Method"
Kyritsis, Athanasios I.; Kostopoulos, Panagiotis; Deriaz, Michel; Konstantas, Dimitri
University of Geneva (UNIGE), Switzerland

"Movement Model Enhanced RSS Localisation"
Hindmarch, Ian; Thomas, Paul; Beach, Mark; Nix, Andy
University of Bristol, United Kingdom

"Access Point topology evaluation and optimization based on Cramer-Rao Lower Bound for WLAN indoor positioning"
Laitinen, Elina Orvokki; Lohan, Elena-Simona
Tampere University of Technology, Finland

"Analyzing Passive Wi-Fi Fingerprinting for Privacy-Preserving Indoor-Positioning"
Schauer, Lorenz; Dorfmeister, Florian; Wirth, Florian
LMU Munich, Germany
Plenary 4: Javier de Salas, ”Carrier phase positioning experiences in consumer GNSS devices”
  • 08:40
  • 30.06
GNSS chipsets found in mobile phones are a technological wonder. Not only do they occupy a few mm2, draw a handful of milliamps from the battery and possible share the die with another systems such as WiFi, Bluetooth or NFC, but also they implement very advanced techniques (digital filters configurable on-the-fly, hundreds of channels to maximize sensitivity, multipath-mitigation methods, tight integration with MEMS sensors, etc.) in order to be able to operate with meter-level accuracy in very adverse conditions caused by interferences from other components of the phone, poor visibility of the satellites, use of very simple antennas, rich multipath propagation, etc. The performance of these GNSS chipsets in benign environments is a heart-warming surprise, and it will be presented in the talk.
The talk will also give evidence that, thanks to the outstanding piece of engineering that GNSS chipsets are, RTK positioning at decimetre level is currently feasible in consumer devices. Protocols (the 3GPP LPP) and operating systems (the Android GNSS Hardware Abstraction Layer) that support the transmission of carrier phase measurements already exist. Experimental results using phones equipped with Broadcom chipsets will show that the chipsets performance is also at the required level to be suitable for RTK. The effects of the antenna, the baseline length, the use of another type of receiver as reference, etc. will be discussed in detail, as well as the need to tune cycle slip detectors given the abundance of these phase jumps produced by fading and the rough environment.

Session 8: Design, prototyping and testing of positioning devices
  • 09:40
  • 30.06
Session chair: Ali Broumandan, University of Calgary, Canada.

"Cloud GNSS receivers: new advanced applications made possible"
Lucas-Sabola, Vicente (1); Seco-Granados, Gonzalo (1); Lopez-Salcedo, Jose A. (1); Garcia-Molina, Jose A. (2); Crisci, Massimo (2)
1: Universitat Autonoma de Barcelona, Spain; 2: European Space Agency (ESA), The Netherlands

"Compact 6+1 Antenna Array for Robust GNSS Applications"
Caizzone, Stefano
German Aerospace Center (DLR), Germany

"Analysis of the Measured RCHP and LHCP GNSS Signals in Multipath Environment"
Lighari, Rameez UR Rahman (1); Berg, Markus (1); Kallankari, Jani (2); Parssinen, Aarno (1); Salonen, Erkki T. (1)
1: Centre for Wireless Communications (CWC), Department of Communications Engineering, University of Oulu, Finland; 2: Verkotan Ltd., Oulu, Finland

"A Coverage Efficient FMCW Positioning System"
Al-Qudsi, Belal; El-Shennawy, Mohammed; Joram, Niko; Ellinger, Frank
Technische Universitaet Dresden, Germany
Session 9: Ionospheric, Tropospheric & Scintillation effects in GNSS
  • 11:30
  • 30.06
Session chair: Wu Chen, Hong Kong Polytechnic University, Hong Kong S.A.R. (China).

"Exploiting Galileo Ionospheric Disturbance Flags to boost NeQuick"
Aragon-Angel, Angela; Fortuny, Joaquim
European Commission, Joint Research Centre (JRC), Institute for the Protection and Security of the Citizen, Italy

"Ionosphere/Plasmasphere sounding with ground and space-based GNSS observations"
González Casado, Guillermo (1); Juan, José Miguel (2); Sanz, Jaume (1)
1: Departament de Matemàtiques. Universitat Politècnica de Catalunya, Spain; 2: Departament de Física. Universitat Politècnica de Catalunya, Spain

"Remote sensing of ionospheric plasma bubbles using GPS/GNSS"
Chen, Wu; Kumar, Sanjay
Hong Kong Polytechnic University, Hong Kong S.A.R. (China)

"Doubly-adaptive autoregressive Kalman filter for GNSS carrier tracking under scintillation conditions"
Locubiche-Serra, Sergi; Seco-Granados, Gonzalo; López-Salcedo, José A.
Universitat Autònoma de Barcelona, Spain

"Assessment of the SHAO-C Tropospheric Delay Correction Model Over Ethiopia"
Ejigu, Yohannes Getachew (1,2); Tsidu, Gizaw Mengistu (3,4)
1: Entoto Observatory and Research Center; 2: Wolkite University; 3: Addis Ababa University; 4: Botswana International University of Technology and Science (BIUST)
Session 10: MULTI-POS I: GNSS
  • 14:20
  • 30.06
Session chair: Jari Nurmi, TUT, Finland.

"GNSS applications: personal safety concerns"
Kolomijeca, Anna (1); Lohan, Elena-Simona (2); López-Salcedo, José A. (1); Seco-Granados, Gonzalo (1)
1: Universitat Autònoma de Barcelona, Spain; 2: Tampere University of Technology

"Data Driven Vertical Total Electron Content workflow for GNSS positioning for single frequency receivers"
Sánchez-Naranjo, Susana M (1,2); González O, Fabio A (2); Ramos-Pollán, Raúl (3); Solé, Marc (1)
1: Pildo Labs, Spain; 2: Universidad Nacional de Colombia, Colombia; 3: Universidad Industrial de Santander, Colombia

"Multi-GNSS analysis based on full constellations simulated data"
Ferrara, Nunzia Giorgia; Nurmi, Jari; Lohan, Elena Simona
Tampere University of Technology, Finland
Session 11: MULTI-POS II: Beyond GNSS
  • 15:40
  • 30.06
Session chair: Simona Lohan, TUT, Finland.

"Performance Considerations for Positioning with Signals of Opportunity"
Figueiredo e Silva, Pedro Manuel; Lohan, Elena Simona
Tampere University of Technology, Finland

"Particle Filter for Context Sensitive Indoor Pedestrian Navigation"
Peltola, Pekka Sakari; Hill, Chris; Moore, Terry
Nottingham University, United Kingdom

"The Non-Technical Challenges to The Location Based Services Markets: The Users’ Concerns Are Being Ignored?"
Basiri, Anahid, Moore, Terry, Hill, Chris and Bhatia, Paul
The University of Nottingham, United Kingdom

Plenary Speakers

Ordered by presentation time

Ignacio Fernández

European GNSS Service Definition Coordinator, European Commission

Talk: Galileo authentication - What, When and Why

  • 28.06.2016
  • 08:40 - 9:40
Abstract

GNSS authentication, or the lack thereof, has been a subject of intense discussion over more than a decade in the satellite navigation community. However, no GNSS currently provides any authentication features to its open service users. Galileo, the European satellite navigation system, has been studying the addition of authentication for its services. This new feature is in the pipeline for its operational provision by the end of the decade. This talk will present the authentication message and signal defined in the Galileo E1 (Open Service) and E6 (Commercial Service), the service provision roadmap, and the performance and security levels obtained in the lab and field testing.
The translation of GNSS authentication features to secured services in consumer and professional receivers may lead to some innovations and standards in the future. Some open points and challenges in this area will also be presented. They relate to key management, combination of authenticated and non-authenticated signals and sensors, authentication in an A-GNSS context where most receivers will operate, and integration of an authentication status in the existing location services

Biography

Ignacio Fernández Hernández is the GNSS Service Definition Coordinator at the European Commission, DG GROW. In the last years, he has led the definition of authentication and high accuracy services for the 1st Generation of Galileo. He also chairs the Galileo CS EU Working Group.
Previously, he coordinated the GNSS user segment activities at the EC DG TREN and the European GNSS Agency, supervising several R&D and standardization projects and co-chairing the U.S.-EU ARAIM Group. Prior to that, he worked in the EGNOS program as system engineer and system test manager.
He holds an MSc degree in Electronic Engineering from ICAI, Madrid, a PhD degree in Electronic Systems by Aalborg University, and a MBA by London Business School.

Danijela Cabric

Associate Professor, University of California (UCLA)

Talk: Localization in cognitive radio networks

  • 28.06.2016
  • 14:00 - 15:00
Abstract

Cognitive Radio (CR) is a promising approach to efficiently utilize the scarce RF spectrum resource. In this paradigm, knowledge about spectrum occupancy in time, frequency, and space that is both accurate and timely is crucial in allowing CR networks to opportunistically use the spectrum, and avoid interference to a primary user (PU). In particular, information about PU location will enable several key capabilities in CR networks including improved spatio-temporal spectrum sensing, intelligent location-aware power control and routing, as well as aiding security and spectrum policy enforcement.
The PU localization problem in CR networks is in general different from localization in other applications such as Wireless Sensor Networks (WSN) and Global Positioning System (GPS), due to the following two features. First, a PU does not cooperate or communicate with CRs since they are opportunistic users of the PU spectrum band. Therefore, very limited knowledge about PU signaling, such as transmit power, modulation scheme and synchronization, is available to CRs. Second, since CRs need to detect and localize PUs in the entire coverage area at a very low signal-to-noise ratio (SNR), cooperation among a large number of CRs is necessary, which introduces important accuracy and complexity constraints.
In this talk, we will explore a set of CR cooperative localization algorithms for single and multiple PUs using different antenna configurations and available measurements, and analyze their cost performance trade-offs both theoretically and experimentally.​

Biography

Danijela Cabric received the Dipl. Ing. degree from the University of Belgrade, Serbia, in 1998, and the M.Sc. degree in electrical engineering from the University of California, Los Angeles, in 2001. She received her Ph.D. degree in electrical engineering from the University of California, Berkeley, in 2007, where she was a member of the Berkeley Wireless Research Center.
In 2008, she joined the faculty of the Electrical Engineering Department at the University of California, Los Angeles, where she is now Associate Professor. Dr. Cabric received the Samueli Fellowship in 2008, the Okawa Foundation Research Grant in 2009, Hellman Fellowship in 2012 and the National Science Foundation Faculty Early Career Development (CAREER) Award in 2012. She served as an Associate Editor in IEEE Journal on Selected Areas in Communications (Cognitive Radio series) and IEEE Communications Letters, and TPC Co-Chair of 8th International Conference on Cognitive Radio Oriented Wireless Networks (CROWNCOM) 2013.
She is now Associated Editor of IEEE Transactions of Cognitive Communications and Networking. Her research interests include novel radio architecture, signal processing, and networking techniques for cognitive radio, 5G and massive MIMO systems.

Klaus Witrisal

Associate Professor, Graz University of Technology

Talk: High-accuracy Positioning in Multipath Channels: Location-Awareness for 5G Networks

  • 29.06.2016
  • 08:40 - 09:40
Abstract

Location-awareness is the capability of a mobile network to employ position information for the sake of operating more efficiently. It is foreseen that fifth-generation (5G) wireless networks will be able to exploit much more accurate position information than any previous generation of wireless networks. This comes naturally due to the increased bandwidth and the application of multi-antenna techniques, which will eventually turn multipath propagation from an enemy to a friend.
This talk will first highlight the impact of multipath propagation on the accuracy of wireless range and position estimation. The important influence of bandwidth and the benefit of MIMO processing will be analyzed. Next it will be shown how one can make use of multipath to benefit from improved positioning accuracy, robustness, and a relaxed need for infrastructure nodes. Analytical performance bounds, their experimental validation, and algorithms derived thereof will be discussed. Finally, it will be shown that a multipath-enabled positioning system is a showcase example of a cognitive dynamic system that can optimize the information gained from each measurement, exploiting its memory of past measurements to plan future measurements. The environment map it collects can be used to predict the propagation characteristics, yielding location-awareness for positioning and communications. It is concluded that the use of position information may become as important to 5G networks as other new, disruptive technologies such as massive MIMO and mm-wave.

Biography

Klaus Witrisal received the Dipl.-Ing. degree in electrical engineering from Graz University of Technology, Graz, Austria, in 1997 and the Ph.D. degree (cum laude) from Delft University of Technology, Delft, The Netherlands, in 2002.
He is currently an Associate Professor at the Signal Processing and Speech Communication Laboratory (SPSC) of Graz University of Technology, Graz, Austria, where he has been participating in various national and European research projects focused on UWB communications and positioning. He is co-chair of the Technical Working Group "Indoor'' of the COST Action IC1004 "Cooperative Smart Radio Communications for Green Smart Environments. His research interests are in signal processing for wideband and UWB wireless communications, propagation channel modeling, and positioning.
Prof. Witrisal served as a leading chair for the IEEE Workshop on Advances in Network Localization and Navigation (ANLN) at the IEEE Intern. Conf. on Communications (ICC) 2013 - 2016, as a TPC (co)-chair of the Workshop on Positioning, Navigation and Communication (WPNC) 2011, 2014, and 2015, and as a co-organizer of the Workshop on Localization in UHF RFID at the IEEE 5th Annual Intern. Conf. on RFID, 2011. He is an associate editor of IEEE Communications Letters since 2013.

Javier de Salas

Director of GNSS Software, Broadcom

Talk: Carrier phase positioning experiences in consumer GNSS devices

  • 30.06.2016
  • 08:40 - 09:40
Abstract

GNSS chipsets found in mobile phones are a technological wonder. Not only do they occupy a few mm2, draw a handful of milliamps from the battery and possible share the die with another systems such as WiFi, Bluetooth or NFC, but also they implement very advanced techniques (digital filters configurable on-the-fly, hundreds of channels to maximize sensitivity, multipath-mitigation methods, tight integration with MEMS sensors, etc.) in order to be able to operate with meter-level accuracy in very adverse conditions caused by interferences from other components of the phone, poor visibility of the satellites, use of very simple antennas, rich multipath propagation, etc. The performance of these GNSS chipsets in benign environments is a heart-warming surprise, and it will be presented in the talk.
The talk will also give evidence that, thanks to the outstanding piece of engineering that GNSS chipsets are, RTK positioning at decimetre level is currently feasible in consumer devices. Protocols (the 3GPP LPP) and operating systems (the Android GNSS Hardware Abstraction Layer) that support the transmission of carrier phase measurements already exist. Experimental results using phones equipped with Broadcom chipsets will show that the chipsets performance is also at the required level to be suitable for RTK. The effects of the antenna, the baseline length, the use of another type of receiver as reference, etc. will be discussed in detail, as well as the need to tune cycle slip detectors given the abundance of these phase jumps produced by fading and the rough environment.

Biography

Javier de Salas has been in the GNSS industry during his entire professional career holding management positions in a string of GPS companies such as Ashtech, Magellan, Global Locate and currently Broadcom since its acquisition of Global Locate in 2007.
At Broadcom, he serves as Director of GNSS Software leading a team of engineers working on GNSS software and firmware. Javier has an MSc in Electrical Engineering from Universidad Politécnica de Madrid and holds 9 US patents in the field of GNSS.

Social Events

Welcome reception at the Noble Halls of the Barcelona City Council

Tuesday June 28

18:00 At the hall of Hotel Ayre.
18:50 At the entrance of the City Council
The welcome reception will start at 19:00h with the following schedule:
19:00 Welcome and guided tour
19:45 Welcome cocktail

Visit to Park Güell and Gala Dinner

Wednesday June 29

17:45 The bus will leave from Casa Convalescencia
18:00 The bus will stop at Hotel Ayre
19:00 Visit to Park Güell
20:15 Departure by bus from Park Güell to the Gala Dinner restaurant
21:00 Gala Dinner at La Gavina Restaurant

Best paper award

The chairs of ICL-GNSS will select the best student paper submitted to the conference.