This paper proposes DFMC airborne multipath models and antenna error derived from measurement supported by simulations. Based on the data evaluated, new (including contribution antenna) for Galileo E1 GPS L1 E5a L5 are discussed. Furthermore, a model Ionosphere-Free combination of signals is proposed.

Carrier phase measurement is essential for high accuracy kinematic positioning in mobile global position system (GPS) applications. For GPS receiver design, a narrow noise bandwidth is desired to decrease phase jitter due to thermal noise. On the other hand, it will deteriorate the capability of tracking loop and result in a cycle slipping. Based on narrow bandwidth criterion, a novel intellige...

In the light of rapidly growing repositories capturing the movement trajectories of people in spacetime, the need for trajectory compression becomes obvious. This paper argues for semantic trajectory compression (STC) as a means of substantially compressing the movement trajectories in an urban environment with acceptable information loss. STC exploits that human urban movement and its large–sc...

This paper evaluates the performance of a shoe/foot mounted inertial system for pedestrian navigation application. Two different grades of inertial sensors are used, namely a medium cost tactical grade Honeywell HG1700 inertial measurement unit (IMU) and a low-cost MEMS-based Crista IMU (Cloud Cap Technology). The inertial sensors are used in two different ways for computing the navigation solu...

This paper discusses the introduction of pseudolites (ground-based GPS-like signal transmitters) in existing integrated GPS/INS systems in order to provide higher availability, integrity and accuracy in a local area. Even though integrated GPS/INS systems can overcome inherent drawbacks of each component system (line-ofsight requirement for GPS, and INS errors that grow with time), performance ...

Animal tracking has been addressed by different initiatives over the last two decades. Most of them rely on satellite connectivity on every single node and lack of energy-saving strategies. This paper presents several new contributions on the tracking of dynamic heterogeneous asynchronous networks (primary nodes with GPS and secondary nodes with a kinetic generator) motivated by the animal trac...

This paper proposes a cost-effective method to estimate the vehicle sideslip angle on various frictional surfaces on banked roads. This paper demonstrates that the vehicle sideslip can be estimated by combining measurements of Global Positioning System (GPS), Inertial Measurement Unit (IMU), and a magnetometer in the Kalman filter framework. Among all the measurements, the magnetometer is the m...

A driver behaviour analysis tool is presented. The proposal offers a novel contribution based on low-cost hardware and advanced software capabilities based on data fusion. The device takes advantage of the information provided by the in-vehicle sensors using Controller Area Network Bus (CAN-BUS), an Inertial Measurement Unit (IMU) and a GPS. By fusing this information, the system can infer the ...

in this paper a practical method for tropospheric effects on gps derived coordinates in absolute mode is presented. gps observations at the permanent gps stations can be used as source of information for the modeling. the developed model is a time-dependent model and as such differs from usual tropospheric models, which are based on atmospheric parameters, i.e. temperature, pressure and humidit...

Phasor measurement Being able to determine phasors across the power system at a fixed point in time has the potential to solve these problems. One of the key components of future utility systems will therefore be Phasor Measurement Units (PMUs). PMUs rely on a GPS time signal for extremely accurate time-stamping of the power system information. A GPS satellite receiver (see box on page 60) prov...