Columns and Editorials

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September 14, 2012

Fractured GNSS Fairy Tales

Back in television’s halcyon days I should have been watching Donald Herbert explain science and technology on his Mr. Wizard programs.

But I was probably laughing my way through the Rocky & Bullwinkle Show instead, especially one of its mainstays, Fractured Fairy Tales — irreverent, yet revealing retellings of the Grimm Brothers’ homilies to human foibles.

And so I became a journalist instead of an engineer, hoping to fracture fallacies and received truths rather than oil shale.

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By Inside GNSS
September 3, 2012

Vector Delay Lock Loops

GNSS receivers determine their position and clock bias by measuring the arrival times of satellite signals. Delay lock loops (DLLs) are used in traditional receivers to measure the arrival times of the signals.

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By Inside GNSS

GPS Civil Funding

The Federal Aviation Administration (FAA) has told those awaiting their slice of the GPS civil program budget that the funds are on the way.

The money, which is supposed to support that portion of the GPS program springing from the needs of civilian users, has been held up for months. In fact, as of late August — with less than 40 days left to go in the fiscal year — the money had not been transferred to either the military’s GPS Directorate or the National Coordination Office (NCO) for Space-Based Positioning, Navigation, and Timing (PNT).

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By Dee Ann Divis
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