AGRICULTURE
Papers
OSNMA: Necessary but not sufficient for GNSS security
This paper examines the performance of the Galileo Open Service Navigation Message Authentication (OSNMA) in various scenarios, elucidating its logic and workflow and revealing its functionality and intended purpose.
Spoofed or Jammed?
An easy-to-read primer on GNSS jamming, spoofing and mitigation with illustrations and in-depth sidebars that explain key terminology to boost your knowledge.
GNSS/INS Sensor with On-board Vehicle Sensors
A key requirement of autonomous vehicle applications is a reliable, accurate, and robust positioning (aka) localization solution. Key navigation, planning and decision operations cannot happen without dependable positioning.
TerraStar X Technology, RTK From the Sky™
The following is from “TerraStar X Precise Positioning Enables Autonomous Applications”, presented by Sara Masterson at Multi GNSS Asia, 2018.
Global Breakthrough in PPP Technology: "RTK From the Sky" White Paper
This paper presents the first results of precise point positioning (PPP) with RTK From the Sky technology: immediate, globally available, centimeter-level accuracy.
GNSS Interference Likelihood Mapping with Case Studies
This paper describes a method for mapping interference by using a model of power loss over distance to create a map of the likelihood of the position of the interferer.
Direct Utilization of LiDAR Data in GNSS/IMU Processing for Indoor and Mobile Mapping Applications
Scanning LiDAR sensors have become a standard component in most mobile mapping systems, and they provide an impressive level of detail in 3-dimensions...
Demonstrated Interference Detection and Mitigation with a Multi-frequency High Precision Receiver
GNSS interferers come in many forms and classifications. Some are intentional, purpose built in-band jammers, but many are unintentional, originating from sources such as radio, TV, wireless communication and radars...
High-Performance GNSS Antennas with Phase-Reversal Quadrature Feeding Network and Parasitic Circular Array
The antenna is the first component in a positioning system, which processes the GNSS and correction signals received from multiple satellites. The precision of a position is strongly related to the performance of the GNSS antenna used...
Performance Differentiation in a Tightly Coupled GNSS/INS Solution
It can be a difficult task trying to determine what kind of GNSS/INS solution will meet the needs of a specific application...
Technologies for Optimized Pass-to-Pass Positioning Performance
High-quality continuous carrier phase can be used to estimate vehicle motion at the centimetre level over short periods of time even when the absolute position accuracy is at the meter level...
NovAtel’s GL1DE Technology
GL1DE provides a relative pseudorange / delta-phase filter enhancement for the NovAtel OEMV firmware. Three sets of GL1DE test results are presented.
Precise Positioning for Automotive with Mass Market GNSS Chipsets