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Product name: GPS module
 
 TOPEX Bytton router contains several options which allows to a professional solution to become a state of the art product with all the requirements included. Bytton equipment can be provided along with several modules which will increase the product reliability and profitability such as: Analogue Voice, WiFiModule, RS232 Serial Interfaces or GPS module.

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  Product Application
 
 Bytton GPS module is used in special applications such as car fleet management allowing a central localization and monitoring. Bytton router will transmit data referring to the geographic position through the integrated GPS Module.
 
The router receives the exact location of the monitored items through GPS and transmits data over the cellular network to a central site or NOC. As back-up possibilities for the main 2G/3G+ network, Bytton can use a second cellular network, fixed landline Ethernet connection or through an extern al USB modem.

GPS module main features:

     -       20-channel, 200 000 effective correlators, L1  1575.42 MHz
-       Velocity: up to 500 m/s
-       Acceleration: up to 5 G
-       Tracking capability: 20 satellite simultaneously
-       Accuracy :
o    horizontal accuracy: better than 2.2 m (CEP), 5.2 m (2 dRMS)
o    PPS accuracy: typically better than 1 µs
-       Acquisition time @ -125dBm:
o    Cold Start TTFF: 42 s (95%), 34 s (typ) valid almanac
o    Warm Start TTFF: 38 s (95%), 32 s (typ) valid almanac, time and position
o    Hot Start TTFF: <1s (95%), 500 ms (typ) valid almanac, time, position and ephemeris
-       Acquisition time @ -140dBm:
o    Cold Start TTFF: 66 s (95%), 52 s (typ) valid almanac
o    Warm Start TTFF: 59 s (95%), 49 s (typ) valid almanac, time and position
o    Hot Start TTFF: <1s (95%), <1s (typ) valid almanac, time, position and ephemeris
-       On-board filtering:
o    L1 –75 MHz, –30 dB
o    L1 +50 MHz, –20 dB