The use of Radio Frequency Identification (RFID) technology extends historically to the 1970’s, when the first commercial products emerged. The introduction of this technology motivated future research that sought to integrate RFID into various applications ranging from inventory control/monitoring to human/animal tracking. However, the practical significance of this technology was not fully re...

[1] Radio Doppler and ranging data at X band ( 8.4 GHz), optical navigation data, and spacecraft attitude control data can be used to characterize the dust environment surrounding comet 81P/Wild 2 and possibly the mass and bulk density of its nucleus. As a secondary objective, a favorable solar conjunction prior to the cometary encounter on 2 January 2004 can be used to sound the Sun’s corona a...

SONAR is the acronym for SOund Navigation And Ranging. Sonar techology is similar to other technologies such as: RADAR = RAdio Detection And Ranging; ultrasound, which typically is used with higher frequencies in medical applications; seismics, which typically uses lower frequencies in the sediments. The knowledge and understanding of underwater sound is not new. Leonardo Da Vinci discovered in...

This paper focuses on multi-sensor fusion for navigation in difficult environments where none of the existing navigation technologies can satisfy requirements for accurate and reliable navigation if used in a stand-alone mode. A generic multi-sensor fusion approach is presented. This approach builds the navigation mechanization around a self-contained inertial navigator, which is used as a core...

The Paper gives an overview about advanced wireless communication, positioning and navigation services for telematic applications in particular those ones connected with freight transportation processes and management of commercial vehicle operations. The challenges and restrictions of different radio technologies are discussed. A telematic solution for freight wagon tracking is presented and i...

The localization of people and objects in different environments is an essential prerequisite for many applications in navigation, robotics, machine control and monitoring. The limiting factor for many applications is the indoor environment in which the Global Satellite Systems work only partially or cannot function at all. Currently radio frequency (RF) based methods are being increasingly imp...

Markus Ulmschneider studied communications and computer engineering at the University of Ulm, Germany, from where he received his Bachelor’s degree in 2011 and his Master’s degree in 2014. In 2014, he joined the Institute of Communications and Navigation of the German Aerospace Center (DLR), Germany, where he is part of the scientific staff of the Mobile Radio Transmission group. His main resea...

A method is proposed for improving the accuracy of calculating tropospheric delay in satellite radio navigation using Kalman filtering with a combination calculation one standard troposphere models. The was tested on real measurement data absence information about weather conditions. It concluded that can work time. implemented and receiver used by Farvater company.

The application of RFID technology is growing fast in university libraries, mainly reflected self-help borrowing and return, literature navigation, book inventory. Based on the practice Jianghan University Library, this paper explores path method applying intelligent construction resources such as readers profile, co-construction sharing. (Radio Frequency Identification) a kind non-contact auto...

Most RF beacons-based mobile robot navigation techniques rely on approximating line-of-sight (LOS) distances between the beacons and the robot. This is mostly performed using the robot's received signal strength (RSS) measurements from the beacons. However, accurate mapping between the RSS measurements and the LOS distance is almost impossible to achieve in reverberant environments. This paper ...