GPS accuracy is so good that it's tempting to rely on it exclusively. That could be a mistake in abnomal traffic conditions.

NASA’s laser retroreflector arrays aboard GPS III satellites enhance positioning accuracy for Earth navigation and scientific measurements by reflecting laser signals back to ground stations.

Visit NAP.edu/10766 to get more information about this book, to buy it in print, or to download it as a free PDF. The presence of SA has little or no effect on the ability to use GPS for orbit ...

Abstract: GPS has evolved into a vital component of our critical infrastructure. Originally developed over 50 years ago as a military navigation system, it has since been transformed into an ...

NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of ...