Nearly 5% of the US population is visually impaired, and nearly half of this population is within ‘working age’ (18-69). In humans, the visual sense is the most important of the five senses, and a lack of it poses serious limitations, both in daily life activities and also in job placement. The most basic task enabled by the visual system is the navigation of spatial environments. More advanced...

GPS radio occultation with CHAMP: monitoring of climate change parameters T. Schmidt, S. Heise, J. Wickert, G. Beyerle, and C. Reigber GeoForschungsZentrum Potsdam, Department 1: Geodesy and Remote Sensing, Potsdam, Germany Received: 20 September 2004 – Accepted: 27 October 2004 – Published: 1 December 2004 Correspondence to: T. Schmidt ([email protected]) © 2004 Author(s). This work is l...

Introduction Conclusions References

A new navigation method is described for indoor mobile robots. The robot system is composed of a Radio Frequency IDentification (RFID) tag sensor, a laser range scanner, and a commercial three-wheel mobile platform. The RFID tags are used as landmarks for global path planning and the topological relation map which shows the connection of scattered tags through the environment is used as course ...

The Federal Aviation Administration (FAA) Alternative Positioning Navigation & Timing (APNT) program is developing and examining solutions to provide terrestrial based radio-navigation capability that can support Next Generation Air Transportation System (NextGen) even with the loss of GNSS. Two technologies being examined are improved distance measuring equipment (DME) and passive ranging from...

Trends in the evolution and development of agricultural field machinery are often shaped by the technological development in other sectors of the world’s economy such as defense and transportation. For example, without defense-related concerns over locating troop movements or guiding ordinates, it is doubtful that the civilian sector alone would have provided enough justification for space-base...