Although satellite navigation, mainly based on the U.S. GPS, plays an important role in positioning and navigation tasks and although there are efforts to establish new satellite-based navigation systems like the European Galileo, the reliability and availability of these systems cannot satisfy all requirements of today’s navigation. Therefore, the navigation system of the future will likely co...

This paper introduces the special effects of the new developed Regional Satellite Augmentation System (RSAS) as an integration component of the Global Satellite Augmentation System (GSAS) employing current and new Satellite Communications, Navigation and Surveillance (CNS) for improving Air Traffic Control (ATC) and Air Traffic Management and of GPS or GLONASS and enhancement of safety and emer...

China’s navigation satellite system BeiDou is developed according to a three step strategy [1]. The first step construction begun in 1994 and ended in 2000, as the BeiDou Navigation Demonstration System, as known as BeiDou I, provided radio determination satellite service (RDSS). The second step covers from 2004 to 2012, and is to construct the BeiDou navigation satellite System (BDS, also call...

The US Global Positioning System (GPS) and the USSR (and later Russian) system Glonass have existed for decades. Europe is developing Galileo and China launched Beidou which was the first Regional Navigation Satellite System (RNSS) and then announced Compass, a Global Navigation Satellite System (GNSS). Japan is planning its own regional augmentation to GPS and Galileo known as the Quasi-Zenith...

Information visualisation (IV) involves representing information visually as a mean of getting insight into data. Many techniques are available in visualising information, with city/urban planning as one of them. The challenge that lies with city/urban planning technique in Information Visualisation is how to enhance the information legibility as to assist users in their wayfinding task. Univer...

In this article we present an application to navigate through a photo collection, using context. In this application, the user context is represented by the photos that are close to him according to one or several dimensions. For example, the user’s context can be represented by the photos that were taken near him during a precise period like the Second World War. Such a context permits the use...

Against the range-dependent accuracy of the tracking radar measurements including range, elevation and bearing angles, a new hybrid adaptive Kalman filter is proposed to enhance the performance of the radar aided strapdown inertial navigation system (INS/Radar). This filter involves the concept of residual-based adaptive estimation and adaptive fading Kalman filter and tunes dynamically the fil...

An autonomous navigation algorithm using the sensor that integrated the star sensor (FOV1) and ultraviolet earth sensor (FOV2) is presented. The star images are sampled by FOV1, and the ultraviolet earth images are sampled by the FOV2. The star identification algorithm and star tracking algorithm are executed at FOV1. Then, the optical axis direction of FOV1 at J2000.0 coordinate system is calc...