Although GNSS/IMU integration has been studied for decades, an efficient estimator of their integration has remained a challenge. In the statistical approaches, the observation model of sensors and distribution of data must be known beforehand. This paper proposes a deep learning based approach to integrate GPS and reduced IMU information. In contrast to statistical approaches, our approach lea...

Road safety is a very important issue in many jurisdictions. Road collisions, which have been identified as a major public health problem by the World Health Organization, are the 11th leading cause of global deaths.1 This problem is being addressed in North America through improved education, enforcement and engineering. Having access to better information systems and tools to support decision...

Precise data processing from the Global Navigation Satellite Systems (GNSS) reference station network is mainly based on a combination of double-differenced carrier phase and code observations. This approach allows most measurement errors to be removed or reduced characterized as accurate method. However, creating observation differences between two receivers satellites increases noise observat...

High sensitivity receiver technology is necessary to ensure sufficient observation availability of satellite navigation in degraded signal environments. However, high sensitivity processing in the deteriorated line-of-sight conditions is susceptible to bringing about severely erroneous navigation observations. Therefore, when using a satellite navigation system, such as the Global Positioning S...

Tropospheric delay is one of the major factors affecting the accuracy of electromagnetic distance measurements. To provide wide-area real-time high precision zenith tropospheric delay (ZTD), the temporal and spatial variations of ZTD with altitude were analyzed on the bases of the latest meteorological reanalysis product (ERA-Interim) provided by the European Center for Medium-Range Weather For...

Master of Electrical Engineering Program Cornell University Design Project Report Project Title: Ionospheric irregularities as observed from the GPS reference station in Singapore, March 2002 Author: Pongabha Abhakara Abstract: In regions near the geomagnetic equator, the phenomenon of ionospheric irregularities that causes scintillations in Global Positioning System (GPS) signals occurs freque...

Carrier phase measurements are used for all high accuracy static GPS positioning applications. It is well known that there are two important aspects to the optimal processing of GPS measurements: the definition of the functional model, and the definition of the associated stochastic model. In most cases the functional model is sufficiently well known, while the definition of the stochastic mode...

One of the major obstacles in resolving ambiguities for longer baselines is the presence of unmodeled ionospheric delays. One technique to deal with this problem is to include ionospheric delay parameters in the observation equations, and estimate them as unknown states. The purpose of this article is to analyze this technique in light of the future signals that will be available through GPS mo...