GPS


Given a decent view of the sky, a GPS receiver can determine your latitude and longitude to a high degree of accuracy as good as a meter or so. But what if the latitude and longitude themselves are in error? That’s the problem faced by the continent of Australia. Every […]

How Science Misplaced Australia


Some interesting and informative links from around the net: Via The Art of Manliness, here’s “How to Survive a Lightning Strike,” “Why I Am Not An Environmentalist: The Science of Economics Versus the Religion of Ecology,” by Steven E. Landsburg, excerpted from The Armchair Economist: Economics and Everyday Life, Sean […]

Some Interesting Links



A couple of years ago, I surveyed the origins of the GPS system in a Sputnik-inspired satellite navigation system that operated using Doppler shift measurements of satellite signals. The TRANSIT or NAVSAT system yielded 100m – 400m location accuracy (accounts vary). The system included several firsts: the first nuclear powered satellite […]

The Navy Navigation Satellite System – A GPS Precursor