Side-by-Side Comparison
| LOCATA |
GPS |
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- Direct Sequence Spread Spectrum (DSSS) signal structure
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- Direct Sequence Spread Spectrum (DSSS) signal structure
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- 2.4 GHz open access ISM band
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- 1.575 MHz licensed navigation band
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- Unlimited number of receivers
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- Unlimited number of receivers
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- Complexity is in the LocataLites. Receivers are simple in design and operation
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- Complexity is in the satellites and ground control segment. Receivers are simple in design and operation
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- Range and phase measurements (currently) at rates up to 25 Hz
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- Range and phase measurements at rates dependent on receiver (10-20 Hz is typical)
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- Position accuracy is primarily determined by DOPs
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- Position accuracy is primarily determined by DOPs
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- DOPs are user configurable. LocataLites can be placed to suit each application.
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- DOPs are not user configurable. The satellites are where they are.
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- Received signal strength of -84 dBm @ 10 km and -64 dBm @ 1 km from the LocataLite[1]
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- Strongest satellite signal is -125 dBm[2]
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| [1] Ideal transmitter at +30 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 |