The navigation problem associated with terminal aircraft guidance refers to position determination of an individual vehicle with respect to some point local to the environment as is the case with aircraft landing systems. This paper presents results for a relative navigation filter that achieves CAT3-level precision from a customized navigation satellite receiver's data message and the NORAD SD...

Multiple global and regional navigation satellite systems are currently being developed. In addition to the already available GPS and GLONASS constellations, Galileo and BeiDou satellites have been launched, as well as one QZSS satellite and other regional satellites. At the same time GPS and GLONASS are being modernized. Highprecision positioning applications that rely on carrierphase ambiguit...

In the last decade, we have been witnessing a rapid development of the constellations of Global and Regional Navigation Satellite Systems (GNSS/RNSS). Besides the well-known GPS and GLONASS, newly developed systems such as Galileo, BeiDou, QZSS and NAVIC have become increasingly important. All satellites of new GNSS are equipped with laser retroreflector arrays (LRA) dedicated to Satellite Lase...

Distance Measuring Equipment (DME) is seeing renewed interest for its ability to support future aviation navigation and surveillance needs. It is one of the primary technologies being examined by the Federal Aviation Administration (FAA) Alternative Positioning, Navigation and Timing (APNT) project to support needs to provide an alternative to global navigation satellite systems (GNSS) in the N...

Fabrice Legrand is a Ph.D. candidate at the ENAC, in the CNS Research Laboratory. His thesis is supported by CNES and Alcatel Space Industries, and dedicated to radio navigation raw measurement integrity and accuracy improvements. Christophe Macabiau is the head of Signal Processing Laboratory of the CNS Research Laboratory of the ENAC. Jean-Luc Issler and Laurent Lestarquit are in the RadioNav...

Autonomous navigation of a mobile robot is a challenging task. Much work has been done in indoor navigation in the last decade. Fewer results have been obtained in outdoor robotics. Since the early 90's, the Global Positioning System (GPS) has been the main navigation system for ships and aircrafts. In open fields, satellite navigation gives absolute position accuracy. The absolute heading info...

Navigation using GPS generally requires that the user track four satellites to resolve his 3-D spatial position and time bias. There are several reasons why it is desirable to navigate while tracking only three satellites: -The proposed 18 satellite GPS constellation will exhibit substantial periods of poor four satellite geometry over large geographic areas several times a day. -Failure of a G...

Dr. Andriy Konovaltsev received his engineer diploma and the Ph.D. degree in electrical engineering from Kharkov State Technical University of Radio Electronics, Ukraine in 1993 and 1996, correspondingly. He joined the Institute of Communications and Navigation of DLR in 2001. His research interests are in array processing for satellite navigation systems, signal processing algorithms for navig...