The purpose of a flight inspection system is to calibrate and evaluate the performance of aircraft navigation and landing aids to ensure conformance to specifications. This mission requires that the flight inspection platform have a reference position estimate significantly more accurate than that of the facility under inspection, i.e., tenths of meter accuracy over a region of many kilometers,...

Under the rapid development of satellite communication systems and satellite navigation systems, there is an urgent need to combine the two together in order to achieve location-based services, etc. Despite the long relationship history of navigation and communication, the two satellite systems are basically independent of each other. As a result, terminal size tends to be relatively large, and...

Abstract Aids to navigation are established assist vessels in the with special importance narrow channels, rivers, or areas dangers navigation. Whether design of aids (AtoN) system is optimum depends on ship positioning, which affected by several factors: waterway geometry, metocean conditions, ship, pilotage, and AtoN themselves, being a crucial part waterway. Optimizing type signals distance ...

This paper presents a new approach to accurate and reliable dead-reckoning with mobile robots. The approach makes use of special properties of our recently developed Multi-Degreeof-Freedom (MDOF) mobile platform, in which two differential-drive mobile robots (called "trucks") are physically connected through a compliant linkage. Using one linear and two rotary encoders, the system can measure t...

New forms of navigation aids for underwater vehicles are enabled through the use of acoustic communications. Both the content and form of the message may be used to estimate range, bearing, range rate, geo-location, and time. Accurate range estimates are available via a conventional 2-way method, but the transmitted signal also supports high precision bearing estimation and highly accurate rang...

The designs of dual band microstrip patch antennas because of their multi-functionality are becoming popular. Satellite mobile and fixed communication for Space Research, Met. Satellite, Radiolocation, Meteorological aids, aeronautical Radio navigation data and analysis has got lot of attentions in the recent years. Achieving selected multiband operation requires precise bandwidth and mutually ...

Since the late 1990s, several Asian countries have developed plans to launch their own navigation satellite systems (NSSs). As a Global Navigation Satellite System (GNSS) is very expensive and complex – only the US and Russia have fully developed GNSSs so far, with Europe and China promising systems – a Regional Navigation Satellite System (RNSS) is a more feasible option. China launched its fi...

Galileo is the program that has been launched by the European Union for the purpose of building a Global Navigation Satellite System (GNSS) for serving civilians and to exist under civil control. Our project combines many previous researched scenarios for Galileo system to a final one, which has been simulated and adjusted to meet the most demanding standards (of proposed GNSS services). The fi...

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...