Articles in the Positioning Category

Jun 2017 | No Comment

Contemporary navigation systems heavily rely on the satellite based systems, mostly still on GPS. The systems proved robust and accurate enough for the vast majority of its today uses. However, there are situations where the reliability and the accuracy of such systems do not meet the expected criteria…

Oct 2016 | No Comment

Massive point cloud acquisition is an effective approach for 3D modeling of unknown objects in an indoor environment.

Feb 2016 | No Comment

Introduction contains sections of status about the GNSS satellites, back ground of GNSS–based positioning methods, Threats in positioning and description of faults.

Dec 2015 | No Comment

Indoor positioning is highly desired for many applications, including personnel tracking for safety in normally unmanned locations. There are several methods and technologies available to…

Sep 2015 | No Comment

GNSS positioning in the urban environment remains challenging, because of the occurrence of many satellite signal reflection and diffraction, also called multipath, that, in the best case, combine with the direct signal, but – in the worst case when the direct signal is obscured – make signal tracking drift unboundedly.

Jun 2015 | No Comment

GNSS-based positions can be obtained in two general ways – Absolute (or Autonomous) Positioning and Differential (or Relative) Positioning. Absolute positioning…

Feb 2015 | No Comment

In the context of structural monitoring, GPS technology made possible the structures behaviour monitoring in terms of absolute displacements, relative to a fixed global reference frame…

Aug 2014 | No Comment

The following are the parameters on which the accuracy of the DGPS depends- LB, OT, number of visible satellites (affects geometry), relative geometry of satellites and change in geometry and Signal to noise ratio (SNR) of received satellite signals. Joao et al 2010 had investigated the DGPS…

Aug 2014 | No Comment

The set of satellite systems for global navigation that are functioning or are expected to be launched in the future, in English are called GNSS (Global Navigation Satellite Systems), whereas in Albanian it will be SSNG (Sistemi satelitor për navigim global). This system allows determining the position in the whole globe…

Jun 2014 | One Comment

The demand for recognizing the user position is steadily increasing not only in the outdoor but also in the indoor. In the outdoor, the global navigation satellite system (GNSS) is available and guarantees high levels of positioning accuracy..