K20s
■ Post-processing software: KGO (Windows PC)
■ 1 year warranty
Optional system components
■ External Radio (410-470 MHz, 5-35W)
■ Battery Case SA-6003
■ Data collectors
- H3 plus (Android), H5 (Android)
- T17N (Windows mobile)
- S50 (Android)
■ Field software
- Field Genius (Windows)
- SurvX (Android)
- Engineering Star 5.0 (Android)
■ 1-2 year warranty extension
Appendix C Technical Terms
Ambiguity: unknown quantity is the integer number of cycles of the carrier phase
measured from the satellite to the receiver.
Baseline: The connection line of the two measurement points, on which to receive
GPS signals and collect observation data simultaneously.
Broadcast ephemeris: message released by the satellite demodulator satellite orbit
parameters.
SNR (Signal-to-noise ratio): an endpoint signal power to noise power ratio.
Cycle skipping: interfere loop skips a few cycles from a balanced point, and stabilize
in the new equilibrium point, this make the phase integer number of cycles to
generate an error.
Carrier: As the carrier, Frequency, amplitude or phase modulation of the modulated
wave by a known reference value.
C / A code: GPS coarse / acquisition code, modulate the pseudo-random binary code
for the 1023 bit duplex, the bit rate of which is 023MHz, and code repetition period
of 1ms.
Difference measurement: GPS measurements employ cross-satellite cross-receiver
and cross-epoch.
Difference Positioning: the method of determining the relative coordinates between
two or more receiver by tracking the same GPS signal.
Geometric dilution of precision: Describe the contribution of satellite geometry
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