Tracking fish using implanted radio transmitters is an important part of studying and preserving native fish species. However, conventional methods for locating the fish after they are tagged can be time consuming and costly. Unmanned Aerial Vehicles (UAV) have been used in general radio localization applications and can possibly be used to locate fish quickly and effectively. However, the meth...

This paper presents the 1ST RELY project which aims at Integrating Satellite Digital Radio Broadcasting (S-DB), terrestrial cellular technology and EGNOS satellite navigation

The Ground-based Radio Navigation System (GRNS) is an alternative/backup navigation system based on time synchronized pseudolites. It has been studied for some years due to the potential vulnerability issue of satellite navigation systems (e.g., GPS or Galileo). In the framework of our study, a periodic pulsed sequence was used instead of the randomized pulse sequence recommended as the RTCM (r...

The Federal Aviation Administration is leading the National Airspace System modernization e ort, in part by supplanting traditional air tra c services with GPS aided by the Wide and Local Area Augmentation Systems (WAAS & LAAS). Making GPS the sole-means of navigation will enhance safety, exibility and e ciency of operations for all aircraft ranging from the single engine general aviation aircr...

Studies of the ionosphere and the physics of the ionospheric processes rely on the knowledge of spatial distribution of the ionospheric plasma. Being the propagation medium for radio waves, the ionosphere significantly affects the performance of various navigation, location, and communication systems. Therefore, investigation into the structure of the ionosphere is of interest for many practica...