Nearly half of all highway fatalities occur from unintended lane departures, which comprise approximately 20,000 deaths annually in the United States. Studies have shown great promise in reducing unintended lane departures by alerting the driver when they are drifting out of the lane. At the core...More>>

Septentrio's precise-timing GPS receiver PolaRx2eTR features prominently in the OPERA experiment being held at CERN, the European laboratory for particle physics in Geneva, Switzerland. The results of this experiment would seem to indicate that neutrinos can travel at a velocity 20 parts per...More>>

Can GPS be used to detect underground nuclear explosions? A research team is developing a software program that uses GPS to analyze the ionospheric effect of nuclear explosions. Results would show when and where a country has conducted a secret underground nuclear test. More>>

There are some navigation applications for which the performance of current MEMS inertial units is not sufficient to achieve the desired navigation accuracy. For such applications, one of the foreseeable solutions is to use redundant number of inertial sensors together to generate more accurate...More>>

The new potential threat to GPS signals across the United States finally emerged as a topic of discussion at the Munich Satellite Navigation Summit, several thousand miles away from any near-term effects, and in front of an audience that will feel no pain — at first. But the European GNSS...More>>

This article presents a simple solution to one of the main challenges of indoor pedestrian navigation.  Many researchers have shown the benefits of using low cost shoe mounted IMUs, but the major drawback of these systems is the rapid and dramatic growth in heading drift error.  The method...More>>

Low cost MEMS gyros and accelerometers are often considered as a potential solution for indoor navigation, but the reality is that such sensors are only sufficient to provide useful positioning for very short periods of time. This is due to sensor errors such as biases and scale factor errors that...More>>

A comprehensive methodology combines spectral-separation and code-tracking spectral-sensitivity coefficients to analyze interference among GPS, Galileo, and Compass. The authors propose determining the minimum acceptable degradation of effective carrier-to-noise-density ratio, considering all...More>>

Brad Parkinson, the original GPS program director who continues to advise and consult for the U.S. government on the modernizing system, gave the keynote address at the ION-GNSS conference on Tuesday evening. The following text represents an incomplete transcription of his talk; I was typing as...More>>

Assume that your mobile phone knows your mode of transportation (stationary, walking, riding a car, etc.) automatically. How could navigation algorithms take advantage of this information? Here’s a possible way this information can be used. When you are not moving at all, it would turn off the...More>>