NAVSOP

Batch Geonews: OpenStreetView.org, 215TB of new Bird's Eye Imagery, Omnipresence of the Google Maps API, and more

Here's the recent geonews in batch mode. It excludes Esri-related geonews since I wait for the conclusion of the User Conference to share an aggregated entry. Also to note, this week some of our users finally get our daily newsletter in their inboxes after an absence of over a year - the problem was that it was identified as 'spam' by a 3rd party filtering system - thanks to the user who reported this issue!

On the open source front:

On the Microsoft front:

Discussed over Slashdot:

In the miscellaneous category:

In the maps category:

NAVSOP Navigation System Rivals GPS

A story discussed recently over Slashdot is named NAVSOP Navigation System Rivals GPS.

Their summary: "BAE Systems has developed a positioning solution that it claims will work even when GPS is unavailable. Its strategy is to use the collection of radio frequency signals from TV, radio and cellphone masts, even WiFi routers, to deduce a position. BAE's answer is dubbed Navigation via Signals of Opportunity (NAVSOP). It interrogates the airwaves for the ID and signal strength of local digital TV and radio signals, plus air traffic control radars, with finer grained adjustments coming from cellphone masts and WiFi routers. In any given area, the TV, radio, cellphone and radar signals tend to be at constant frequencies and power levels as they are are heavily regulated — so positions could be calculated from them. "The real beauty of NAVSOP is that the infrastructure required to make it work is already in place," says a BAE spokesman — and "software defined radio" microchips that run NAVSOP routines can easily be integrated into existing satnavs. The firm believes the technology could also work in urban concrete canyons where GPS signals cannot currently reach."

I remembered 4 years ago we mentioned eLORAN as a possible backup system for the current satellite GNSS systems.

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