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GPS-21GPS Sensor

Parallel 24-channel GPS receiver capabilities and compatibility with SBAS (WAAS / EGNOS) and MICHIBIKI


WAAS, EGNOS and MICHIBIKI compatible

SBAS, Satellite Based Augmentation Systems, are fully operated in USA (WAAS) and Europe (EGNOS).
GPS-21 is able to receive the seamless correction signals provided from these systems.
MICHIBIKI (Quasi-Zenith Satellite System) is a Japanese satellite positioning system composed mainly of satellites with quasi – zenith orbit.
Four satellites take non-symmetrical figure-of-moons trajectory up and down, so that one satellite in the country will always be arranged in the zenith direction, complementing GPS positioning. Moreover, positioning accuracy can be improved by receiving sub meter-class reinforcement signals broadcast from the quasi-zenith satellite.
MICHIBIKI can be used in East Asia and Oceania area only.

24-channel reception

Parallel 24-channel receiver provides precise and quick positioning at any time.



Main Specifications

GPS receiver section
Receiving frequency1575.42 MHz ± 1 MHz
Receiving channelParallel 24-channel
Sensitivity-168 dBm
Positioning accuracyPositionGPS: 10m (2 drms, SA=OFF, PDOP≦3)

SBAS : 7m (2 drm, SA=OFF, PDOP≦3)
Velocity1m / sec (rms, SA=OFF, PDOP ≦3)
TrackingVelocity972 km/h max
Acceleration1 G or less
Position updata interval1 second
Position fixing tine Cold start35 second (standard value)
Differential positioningRX inputSBAS (MSAS, WAAS, EGNOS), QZSS (L1S)
External inputRTCM SC-104
Power supply10.8 to 31.2 VDC
Power consumption0.6 W or less
Data communicationAsynchronous data communication with RS-422
Output dataFormatNMEA 0183 Ver. 2.3
Data levelRS-422
Output current20 mA or less
Please contact Koden

or your nearest distributor.

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