Earlier this year I wrote a belated tribute to a well-known pioneer in strapdown. Now I must write another tribute, even more belated, to a Read more

Prof. H.B. Hablani from Dept Aerospace Engrg, Indian Institute of Technology (Bombay) recently taught a 5-day course on integrated navigation, Read more

In 2013 a phone presentation was arranged, for me to talk for an hour with a couple dozen engineers at Raytheon. The original plan was Read more

The sky isn't falling but some of our bridges are. About seventy thousand of them are structurally deficient, and about a quarter of those could Read more

In February of this year the navigation community lost a major contributor to navigation -- John Bortz. To many his name is best known in Read more

 A comment challenged my video .  I'm glad it included an acknowledgment that some points might have been missed. To be frank that happened a Read more

4/11/2013Press Release   James L Farrell launches his new Kindle book - GPS Made Simple   James L Farrell, author of  GNSS Aided Navigation Read more

A LinkedIn discussion centered on the Future Airborne Capability Environment (FACE) standard contained an important observation concerning Read more

Significant momentum is evolving toward a role for Open System Architecture (OSA) applied to radar. My observations in connection with that, Read more

Free-inertial navigation uses accelerometers and gyros alone, unaided. For that purpose pioneers of yesteryear developed a variety of techniques, Read more

Now that several years have passed since the LORAN-C budget was killed, it might be a good time to revisit that decision. Unlike other decisions, Read more

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