u-blox Introduces the LEA-4T Precision Timing GPS Module for Global Synchronicity
Feb 23, 2006 gps navigation, misc news
u-blox AG, today introduced the LEA-4T, a high performance, low power, precision timing GPS receiver capable of a (compensated) time pulse accuracy of 15 ns. Needing just one satellite and consuming no more than 38 mA, the LEA-4T is ideally suited for telecomm network synchronization and for applications that need time-accurate data communication between geographically dispersed systems and devices.
The LEA-4T features a Time Mode function whereby the GPS receiver assumes a stationary position, whether programmed manually or determined by an initial self-survey. Stationary operation enables GPS timing with only one visible satellite and eliminates timing errors which otherwise result from positioning errors. The accuracy of the time pulse is as good as 50 ns Root Mean Square (RMS), synchronized to GPS or UTC time. However, an accuracy of 15 ns can be achieved by using the quantization error information to compensate for the granularity of the time pulse. The 2-channel time mark and counter unit also provides a globally synchronized time stamping and time-measuring functionality useful in applications such as seismic sensors or other applications that require wide-area synchronization needs…
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