introduction
play

Introduction STRIDE Increasing use for PNT applications: - PowerPoint PPT Presentation

Oct 08, 2023 •95 likes •332 views

Introduction STRIDE Increasing use for PNT applications: Positioning Navigation Timing GNSS Vulnerabilities STRIDE Source: IranMap.com GNSS Receiver Evaluation STRIDE Many designers are working on improving

  2. Introduction STRIDE Increasing use for PNT applications:  Positioning  Navigation  Timing

  3. GNSS Vulnerabilities STRIDE Source: IranMap.com

  4. GNSS Receiver Evaluation STRIDE Many designers are working on  improving characteristics of GNSS receivers, such as: Lower power consumption  Tracking of weak satellite signals  Acquisition time  Positioning and timing accuracy  Radio frequency interference (RFI)  interoperability Many developers and users still  struggle to identify suitable standard tests to objectively verify and evaluate the functionality and performance of GNSS receivers.

  5. GNSS Receiver Evaluation STRIDE GNSS Simulation Field Evaluation Employs live GNSS signals. Employs simulated GNSS signals.   Should be conducted in open area with Should be conducted in a RF enclosure   clear view of the sky. (e.g. anechoic chamber). Tests scenarios are uncontrollable by Test scenarios are user controllable   users and not repeatable. and repeatable.

  6. Research Theme STRIDE Title: Simulation and Modelling of Global Navigation Satellite System (GNSS) Vulnerabilities Research Objectives:  GNSS simulation will be used to model the effect of the following vulnerabilities on GNSS receiver performances:  Radio frequency interference (RFI)  Spoofing  Ionospheric and tropospheric delays  LOS blockage and multipath errors

  7. R&D Projects Conducted STRIDE Num. Project Title Status Duration November 2009 – June Evaluation of the Effect of Radio Frequency Interference (RFI) on 1 Internal Global Positioning System (GPS) Signals 2010 January 2011 – May Evaluation of the Effect of Radio Frequency Interference (RFI) on 2 RMK10 Global Positioning System (GPS) Signals via GPS Simulation 2012 January 2013 – January Evaluation of the Effect of Multipath on Global Positioning System 3 Internal (GPS) Signals via GPS Simulation 2014 Evaluation of the Effect of Global Positioning System (GPS) April – September 2014 4 Internal Satellite Clock Error via GPS Simulation Evaluation of Trade-Off Between Global Positioning System (GPS) November 2014 – March 5 Accuracy and Power Saving from Reduction of Number of GPS Internal 2015 Receiver Channels Evaluation of the Accuracy of Global Positioning System (GPS) May – August 2015 6 Internal Speed Measurement via GPS Simulation October 2015 – August Evaluation of the Effect of Global Positioning System (GPS) 7 Internal 2016 Antenna Orientation on GPS Performance Evaluation of Global Positioning System (GPS) Adjacent Band October 2016 – Current 8 Internal Compatibility via GPS Simulation January 2018 – Simulation and Modelling of Global Navigation Satellite System Proposed 9 (GNSS) Vulnerabilities for RMK11 December 2019

  8. Presentation Outline STRIDE Review of activities conducted on  vulnerabilities of GPS to: Radio frequency interference (RFI)  Simplistic spoofing  Static multipath  GPS satellite clock error   Power consumption Speed measurement  Antenna orientation  Future research direction:  Intermediate spoofing  Dynamic multipath   Ionospheric and troposheric delays Extension to other GNSS systems;  GLONASS, BeiDou and Galileo

  9. GNSS Antenna Orientation STRIDE Antennas are a critical part of any  GNSS receiver design and their importance cannot be stated highly enough. GNSS signals are extremely weak and  present unique demands on the antenna. Even the best receiver cannot bring  back what has been lost due to a poor antenna design. The choice and implementation of the  antenna plays a significant role in GNSS performance

  10. GNSS Antenna Orientation STRIDE Ideally, a GNSS antenna should have  an isotropic response pattern that is independent of its orientation or direction of arrival of GNSS signals. However, there are no ideal antennas  in the real world and real antennas do not have an isotropic response pattern. This means that the same signal  received at various antenna orientations can result in stronger or weaker signals being presented to the receiver front end. To this end, the evaluation of the effect  of GNSS antenna orientation on GNSS performance has received significant attention

  11. Objective STRIDE  This study is aimed at evaluating the effect of GPS antenna orientation for three Garmin GPS receivers that use built-in quad helix antennas;  GPSmap 60CSx  GPSmap 62Cs  Oregon 550

  12. Methodology STRIDE The following assumptions are made for the tests conducted: • No ionospheric or troposheric delays • No clock and ephemeris error • No unintended multipath fading or obstructions • No interference signals Test locations: • N 2 ° 58’ E 101° 48’ (Kajang, Selangor, Malaysia) • N 39 ° 45’ W 105° 00’ (Denver, Colorado, USA) • S 16 ° 55’ E 145° 46’ (Cairns, Queensland, Australia) • S 51 ° 37’ W 69° 12’ (Rio Gallegos, Argentina) UTC times: • 0000 • 0300 • 0600 • 0900 Readings are taken for GPS antenna orientations of 0 to 345 ° , at increments of 15 ° . For each reading, values of estimate probable error (EPE) are recorded for a period of 15 min.

  13. Results & Discussion STRIDE GPSmap 60CSx

  14. Results & Discussion STRIDE GPSmap 62Cs

  15. Results & Discussion STRIDE Oregon 550

  16. Results & Discussion STRIDE It is found that there is degradation of  accuracy for antenna orientations of 75 to 120° and 240 to 285°. This indicates that for these orientations, the  antenna gain is lower, resulting in reduced carrier-to-noise density ( C / N 0 ) levels for GPS satellites tracked by the receivers, which is the ratio of received GPS signal power level to noise density. Lower C/N0 levels result in increased data  bit error rate when extracting navigation data from GPS signals, and hence, increased carrier and code tracking loop jitter. This, in turn, results in more noisy range  measurements and thus, less precise positioning. For the remaining orientations, the  performance remains constant.

  17. Results & Discussion STRIDE These results indicate that the quad helix antennas are operating in endfire and  backfire modes simultaneously. While this type of design has smaller antenna gain than quad helix antennas that  use only endfire or backfire modes, it allows for a more isotropic antenna performance. Example of the radiation pattern of a quad helix antenna operating in endfire and backfire modes simultaneously

  18. Conclusion STRIDE  It was found that there was degradation of accuracy for orientations of 75 to 120° and 240 to 285°.  For the remaining orientations, the accuracy remained constant. This indicates that the quad helix antennas are operating in endfire and backfire modes simultaneously.  While this type of design has smaller antenna gain than quad helix antennas that use only endfire or backfire modes, it allows for a more isotropic antenna performance.  This study will be extended to evaluate the performance of antennas of a wider range of GPS receivers.

  19. Scope for Future Work STRIDE  The proposed scope for future work includes the extension of this study to perform the simulation and modelling of:  Intermediate spoofing  Dynamic multipath  Ionospheric and troposheric delays  Extension to other GNSS systems; GLONASS, BeiDou and Galileo

  20. GPS Functional Tests STRIDE Pendulum Instruments Trimble Geoexplorer Magellan Z-Max GPS-12R 6000 GeoXH, Nomad 900G and Juno SB Topcon Hiper GA Trimble R8 ProMark 200

  21. Research Collaborations STRIDE Effect of Radio Frequency  Interference (RFI) on Global Positioning System (GPS) Static Observations (2012) Collaboration with the Faculty  of Architecture, Planning and Surveying (FSPU), Universiti Teknologi MARA (UiTM) Project Co-Leaders:  Assoc. Prof. Sr. Dr. Azman Mohd  Suldi  Mr. Ahmad Norhisyam Idris Power Efficient Global  Positioning System (GPS) Receiver Design (2014) Collaboration with the  Department of Computer and Communication Systems Engineering, Universiti Putra Malaysia (UPM) Project Co-Leaders:  Dr. Fakhrul Zaman Rokhani   Mr. Fawaz Mohamed Jumaah

Recommend

INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION

INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION

TRAINING COURSE ON SOCIAL PROTECTION & FORMALIZATION TRINIDAD AND TOBAGO MARCH 15, 2017 INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION INTRODUCTION Design of the NIS Assistance from the

547 views • 23 slides
INTRODUCTION Introduction 2/42 INTRODUCTION Alternations I am giving bread to the

INTRODUCTION Introduction 2/42 INTRODUCTION Alternations I am giving bread to the

Patterns of variation in the expression of case and agreement Andrs Brny Leiden University Centre for Linguistics 9 November 2019, BaSIS Workshop a.barany@hum.leidenuniv.nl INTRODUCTION Introduction 2/42 INTRODUCTION

1.37k views • 42 slides
Introduction Introduction Introduction Introduction Outline Motivation Failures

Introduction Introduction Introduction Introduction Outline Motivation Failures

Introduction Introduction Introduction Introduction Outline Motivation Failures Definition and concepts Process and product properties Principles SE Approaches Motivation Software and the economy The economies of

1.03k views • 49 slides
Introduction Introduction Introduction Nationwide Cause for Concern 1

Introduction Introduction Introduction Nationwide Cause for Concern 1

Introduction Introduction Introduction Nationwide Cause for Concern 1 https://www.cdc.gov/std/stats17/infographic.htm Introduction Epidemiology in Western Colorado CPHE Surveillance Data Report, May 2018 Chlamydia Epidemiology in Western

977 views • 39 slides
DAQ introduction Purpose of this talk : (1) Introduction for those who have not been in every

DAQ introduction Purpose of this talk : (1) Introduction for those who have not been in every

DAQ introduction Purpose of this talk : (1) Introduction for those who have not been in every meeting (2) Some ideas of diagrams for section 7.1 (Introduction) of TP. Giles Barr 25 Jan 2018, Pembroke College On DUNE, the reality is there is a

474 views • 10 slides
INTRODUCTION cf. Schneider, Chapter 1 INTRODUCTION THEY ARE OUT TO GET YOU INTRODUCTION WHAT

INTRODUCTION cf. Schneider, Chapter 1 INTRODUCTION THEY ARE OUT TO GET YOU INTRODUCTION WHAT

ADVANCED COMPUTER SECURITY INTRODUCTION cf. Schneider, Chapter 1 INTRODUCTION THEY ARE OUT TO GET YOU INTRODUCTION WHAT IS SECURITY? A systems security policies describe What the system is supposed to do Store and provide access

479 views • 16 slides
Overview Introduction to SMIL Introduction to W3C and XML Introduction to SMIL

Overview Introduction to SMIL Introduction to W3C and XML Introduction to SMIL

Overview Introduction to SMIL Introduction to W3C and XML Introduction to SMIL Writing a SMIL file Adding Media Objects Martin Halvey Clipping media files January 2008 Timing and Synchronising Layout World Wide

387 views • 14 slides
14 Introduction Introduction Bad guys can put malware into Example: hosts

14 Introduction Introduction Bad guys can put malware into Example: hosts

Introduction Introduction source Encapsulation ISO/OSI reference model message M application segment H t H t M transport network datagram H n H n H t M presentation: allow applications to frame link H l H n H t M interpret

583 views • 4 slides
Previous Lecture Introduction to SMIL 2 Introduction to W3C and XML Introduction to SMIL

Previous Lecture Introduction to SMIL 2 Introduction to W3C and XML Introduction to SMIL

Previous Lecture Introduction to SMIL 2 Introduction to W3C and XML Introduction to SMIL Writing a SMIL file Adding Media Objects Martin Halvey Clipping media files January 2008 Timing and Synchronising Layout

322 views • 8 slides
Lecture 1 Andreas Habegger Introduction Zynq Introduction Zynq Introduction Zynq PS vs. PL

Lecture 1 Andreas Habegger Introduction Zynq Introduction Zynq Introduction Zynq PS vs. PL

Introduction Zynq Lecture 1 Andreas Habegger Introduction Zynq Introduction Zynq Introduction Zynq PS vs. PL Processing System Processor Peripherals Data Buses AXI Bus Conclusion BTE5380 - Embedded Systems Octobre 2014 Andreas Habegger

1.81k views • 30 slides
2018.06 01 SMILE5 Introduction S E 5 02 Alpha Cloud M I L 03 Company Introduction 04

2018.06 01 SMILE5 Introduction S E 5 02 Alpha Cloud M I L 03 Company Introduction 04

2018.06 01 SMILE5 Introduction S E 5 02 Alpha Cloud M I L 03 Company Introduction 04 Project References S E 5 PART.1 SMILE5 Introduction M I L Introduction STORION-SMILE5 Residential Energy Storage System Inverter 5kW Output Input

1.06k views • 25 slides
Introduction to CICS Course introduction Course introduction What is CICS? What is an

Introduction to CICS Course introduction Course introduction What is CICS? What is an

Introduction to CICS Course introduction Course introduction What is CICS? What is an application server? Why use an application server? Course introduction Services provided by CICS How CICS applications are defined Scaling CICS to meet

1.84k views • 146 slides
Network Visualization Introduction Presented by Shahed Introduction Introduction Basic

Network Visualization Introduction Presented by Shahed Introduction Introduction Basic

Network Visualization Introduction Presented by Shahed Introduction Introduction Basic building blocks Node Links (relationship between nodes) Spatial information Network data

584 views • 9 slides
Introduction Introduction (1) Main argument of the paper: universities are not only

Introduction Introduction (1) Main argument of the paper: universities are not only

Le jugement des pairs comme outil de management des universits Peer-review as a management tool Christine Musselin (CSO, Sciences Po et CNRS) Avril 2013, Lirrsistible ascension du capitalisme acadmique Introduction Introduction (1)

590 views • 28 slides
Introduction Introduction to storage and to storage and filesystems filesystems Introduction

Introduction Introduction to storage and to storage and filesystems filesystems Introduction

Moreno Baricevic Gilberto Daz Axel Kohlmeyer Stefano Cozzini ULA ICTP CNR-IOM DEMOCRITOS Merida, VENEZUELA Trieste, ITALY Trieste, ITALY Introduction Introduction to storage and to storage and filesystems filesystems Introduction

1.19k views • 51 slides
JABLOTRON JA-100 introduction November 2011 Introduction Todays goals First introduction of

JABLOTRON JA-100 introduction November 2011 Introduction Todays goals First introduction of

JABLOTRON JA-100 introduction November 2011 Introduction Todays goals First introduction of the brand new JA-100 alarm system Visions Basic architecture System components Setting Help us with final validations You are the FIRST ones

1.69k views • 111 slides
1 Introduction Introduction Communication System Baseband an adjective that describes

1 Introduction Introduction Communication System Baseband an adjective that describes

Introduction Introduction Physical Layer Mobile network Global ISP Provides the means to transmit bits Basic Concepts of from sender to receiver, Data Transmission Defines the mechanical, electrical, and Home network timing

463 views • 7 slides
Welcome! Todays Agenda: Topic Introduction Course Introduction Team Practical

Welcome! Todays Agenda: Topic Introduction Course Introduction Team Practical

INFOGR Computer Graphics Jacco Bikker - April-July 2015 - Lecture 1: Introduction Welcome! Todays Agenda: Topic Introduction Course Introduction Team Practical Details Assignments Field Study State of

869 views • 62 slides
Introduction (00) RNDr. Martin Madaras, PhD. madaras@skeletex.xyz Introduction Introduction

Introduction (00) RNDr. Martin Madaras, PhD. madaras@skeletex.xyz Introduction Introduction

Virtual and Augmented Reality Introduction (00) RNDr. Martin Madaras, PhD. madaras@skeletex.xyz Introduction Introduction Who am I? What do I do here? 2 About me Short research bio: - 2014 - finished PhD at FMFI UK - 2014 2016 -

1.3k views • 39 slides
PRESENTATION The Introduction What is the Introduction ? The introduction prepares the audience

PRESENTATION The Introduction What is the Introduction ? The introduction prepares the audience

PRESENTATION The Introduction What is the Introduction ? The introduction prepares the audience for your presentation. It tells them what your presentation is about, why it is important, and finally, what to listen for in your speech. Get the

505 views • 3 slides
How to make a presentation with L A T EX? Introduction to L A T EX Introduction to Beamer

How to make a presentation with L A T EX? Introduction to L A T EX Introduction to Beamer

Introduction to Beamer Hafida Benhidour How to make a presentation with L A T EX? Introduction to L A T EX Introduction to Beamer Introduction to Beamer Hafida Benhidour Department of computer science King Saud University November

732 views • 49 slides
Shenzhen Cuilu jewelry Co., Ltd was founded in 1996 and its a large private enterprise

Shenzhen Cuilu jewelry Co., Ltd was founded in 1996 and its a large private enterprise

Introduction Introduction - - Brief Brief Introduction Introduction of of Cuilu Cuilu Group Group Introduction Introduction - - Brief Brief Introduction Introduction of of Cuilu Cuilu Group Group Shenzhen Cuilu jewelry Co., Ltd

147 views • 14 slides
Introduction to ICS- -214 214 Introduction to ICS Official Unit / Incident Log - A V-C-N.org

Introduction to ICS- -214 214 Introduction to ICS Official Unit / Incident Log - A V-C-N.org

V olunteer C ommunications N etwork (V-C-N.org) Introduction to ICS- -214 214 Introduction to ICS Official Unit / Incident Log - A V-C-N.org Academy Course - 2012-02.24-2208 262: Introduction to ICS-214 : V-C-N.org : Slide: 1 V olunteer C

735 views • 34 slides
Introduction to ICS- -214 214 Introduction to ICS Official Unit / Incident Log - A V-C-N.org

Introduction to ICS- -214 214 Introduction to ICS Official Unit / Incident Log - A V-C-N.org

V olunteer C ommunications N etwork (V-C-N.org) Introduction to ICS- -214 214 Introduction to ICS Official Unit / Incident Log - A V-C-N.org Academy Course - 2012-02.24-2208 262: Introduction to ICS-214 : V-C-N.org : Slide: 1 V olunteer C

558 views • 18 slides

More recommend