A5001954611- GNSS positioning and interference
- Advanced Frequency and Time Standards
- Ionosphere and magnetosphere dynamics
- Railway Systems and Energy Efficiency
- Mobile Agent-Based Network Management
- Satellite Communication Systems
- Monetary Policy and Economic Impact
- Inertial Sensor and Navigation
- Transportation Systems and Safety
- Radio Wave Propagation Studies
- Target Tracking and Data Fusion in Sensor Networks
- Advanced Research in Systems and Signal Processing
- Power Line Communications and Noise
- Geophysics and Gravity Measurements
- Economic Growth and Productivity
RWTH Aachen University
2016-2020
Airbus (Germany)
2018-2020
Airbus (Netherlands)
2019
Airbus (Italy)
2018
Institute of Navigation
2018
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
2015-2018
Technical University of Munich
2018
This paper presents a User Range Accuracy (URA)/Signal-in-Space (SISA) analysis to support ARAIM based on time-dependent statistical characterization of orbit and clock error observations. By comparing precise orbits broadcast ephemeris for each individual GPS Galileo satellite, this work computes the Signal-in-Space Error (SISRE) that needs be overbounded by URA/SISA value included in Integrity Support Message (ISM). Service data from January 2008 February 2015 March June are processed,...
In this paper, we derive new satellite orbit and clock error models for time sequential, dual frequency, multi-constellation Advanced Receiver Autonomous Integrity Monitoring (ARAIM). the current implementation of baseline ‘snapshot’ ARAIM, Carrier Smoothed Code (CSC) measurements at one instant in are used to provide a navigation solution. Using time-sequential i.e., using collected over time, will significantly reduce Protection Levels (PL). It was shown [3] that snapshot ARAIM cannot...
This paper presents a nominal range error analysis to support ARAIM based on statistical study of orbit and clock errors observations for Galileo F-NAV Open Service. Nominal is characterized by the socalled Signal-in-Space Range Error (SISRE) which computed comparing precise reference orbits broadcast ephemeris each individual satellite. work processes constellation service data from March 2015 July 2016 accounting progressive satellite addition during expansion. Given undergoing maturation...
This paper analyzes the effect of error correlation on SISRE bounding for GPS and Galileo satellites. For a given period data collection, it computes effective number independent samples contained in dataset applying an estimation variance analyses. Results show that time between is highly dependent constellation onboard clock type. On one hand, satellites equipped with Rubidium clocks exhibit significantly longer than those Cesium clocks. other substantially shorter among less variability...
ARAIM is an evolution of the RAIM integrity technique recently developed to protect multi-constellation users by means robust user algorithms. The solution for Aviation includes offline ground monitoring architecture, which provides updates on nominal performance and fault rates multiple constellations. This data contained in Integrity Support Message (ISM) that generated network provided airborne fleet through GNSS signals. current concept has been designed initially serve sector....
We present a method to detect intentional ranging errors on GNSS measurements. Intentional can be introduced by targeted radio interference, or spoofing, and are considered significant threat aviation safety. The proposed assumes functioning APNT capability, able provide RNP 0.3 equivalent services independently of GNSS. two variants the method, one in snapshot processing batch processing, where capability is assumed include inertial hybridization. after integration, capable detecting range...
This paper presents a methodology to validate MGEX precise products applied in the characterization of GPS and Galileo constellation performance fault detection. First this compares orbits coming from four different analysis centers contrasts level agreement among them. The validated are used along with code phase observations collected by set ground stations simultaneously estimate receiver biases satellite offsets. Once network is synchronized, retrieval missing orbit clock attempted....
This paper presents a novel Signal-in-Space Range Error (SISRE) overbounding methodology based on the combination of two Gaussian distributions. Based empirical evidence from GPS and Galileo historical SISRE data, by partitioning error distribution into core tail sets, this work introduces an individual Single (SG) overbound for each distribution. Their weighted sum creates more efficient Multi (MG) integrity bound which provides flexibility to optimize core-tail shape ultimately leading...
This paper provides an update on two essential aspects related to the future support of Galileo Advanced Receiver Autonomous Integrity Monitoring (ARAIM) service: performance assessment and Support Message (ISM) format. The first part this gives a detailed measurement characterization parameters relevant for ARAIM users, with particular view URA Broadcast Group Delay (BGD) error overbound. work is one important outcomes Failure Mode Effect Analysis (IFMEA) that has been established in frame...
This paper focuses on the model of Signal In Space biases in Integrity Support Message (ISM) and Advanced RAIM (ARAIM) user algorithm. distortions, satellite orbit clock missmodelling, antenna phase center offsets, inter-frequency other related errors generate ranging error distributions which must be included handled integrity The scope this is to investigate design these ISM order optimize availability performance. study present ARAIM algorithms shows situations where conservatism can...
The Advanced Receiver Autonomous Integrity Monitoring (ARAIM) concept was designed initially to serve the aviation community and civil authorities. Nevertheless, message provide flexibility, for its use in non-aviation communities. A wide range of applications, especially safety life (SoL) operations, can principle take advantage this service, or a modified version it, since they have similar, even more demanding requirements than users. Rail, Maritime Unmanned Aerial Vehicles (UAVs), were...
This paper analyzes the effect of error correlation on SISRE bounding for GPS and Galileo satellites. For a given period data collection, it computes effective number independent samples contained in dataset applying an estimation variance analyses. Results show that time between is highly dependent constellation onboard clock type. On one hand, satellites equipped with Rubidium clocks exhibit longer those Cesium (50-60 hours versus 5-6 hours). other significantly shorter among less...
Today, Satellite Based Augmentation Systems (SBASs) are in transition to support dual frequency Global Positioning System (GPS) or Galileo. With this evolution comes an architectural change, mitigating some of the time-critical requirements provision SBAS data user. In particular users will no longer need fast and continuous transmission ionospheric corrections for safety-of-life service. Without model delay, future may be designed with a much sparser ground network without GEO link....