Orolia Conducts Indoor Location Tests with Iridium Satellites
Thursday, March 23, 2017 | Comments

Orolia announced that in several indoor environments in the field, it successfully synchronized a Spectracom high-precision time server with the new Iridium Satellite Time & Location (STL) time synchronization signal.

Configured with an embedded STL receiver and a small patch antenna, the SecureSync was able to sync up with the STL signal in several challenging indoor locations. The first successful synchronization was in the interior of a building in downtown Manhattan on the seventh floor of the New York Stock Exchange. The second was in the interior of a conference center with multiple sources of potential signal interference during the Institute of Navigation event in Monterey, California. Additional successful indoor timing signal synchronization locations include MiFiD2 events near the Paris Stock Exchange, a multistory building, and inside Gibson Hall in downtown London.

STL uses the narrowband paging channels of Iridium, a one-way transmission from the satellite with a high gain system. The STL signal is different from the wide band, lower gain two-way channel of the Iridium phone and cannot be compared. The STL signal is 1,000 times stronger than GPS because it originates from the Iridium constellation of 66 satellites orbiting in a low earth orbit. It is also encrypted for high security, which greatly enhances the resilient positioning, navigation and timing (PNT) capabilities of the Spectracom product lines.

Having proven the ability to provide a strong and reliable alternative signal in various indoor field locations, the new globally accessible STL signal adds a significant safety net to any critical global navigation satellite system (GNSS) application. Adding to the mix of signals benefits critical infrastructure, company executives said.

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