Locata
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Side-by-Side Comparison


LOCATA GPS
  • Ground based
  • Satellite based
  • Direct Sequence Spread Spectrum (DSSS) signal structure
  • Direct Sequence Spread Spectrum (DSSS) signal structure
  • 2.4 GHz open access ISM band
  • 1.575 MHz licensed navigation band
  • Unlimited number of receivers
  • Unlimited number of receivers
  • Complexity is in the LocataLites.  Receivers are simple in design and operation
  • Complexity is in the satellites and ground control segment.  Receivers are simple in design and operation
  • Range and phase measurements (currently) at rates up to 25 Hz
  • Range and phase measurements at rates dependent on receiver (10-20 Hz is typical)
  • Position accuracy is primarily determined by DOPs
  • Position accuracy is primarily determined by DOPs
  • DOPs are user configurable.  LocataLites can be placed to suit each application.
  • DOPs are not user configurable.  The satellites are where they are.
  • Received signal strength of -84 dBm @ 10 km and -64 dBm @ 1 km from the LocataLite[1]
  • Strongest satellite signal is -125 dBm[2]
[1]     Ideal transmitter at +23 dBm with a 6 dB gain transmit antenna and only free space path loss effecting the signal [2]   No obstructions to satellite visibility and 3 dBi gain receive antenna