31 WISE-4610(P) User Manual
Chapter 4 Software Functions
4.2.2 Positioning
4.2.2.1 General Description
WISE-4610 accesses the u-blox EVA-M8M-0 GNSS module via the I2C interface.
This GNSS module can provide geolocation and time information.
The features of EVA-M8M are listed below:
Measurement Data
The data below is available from the GNSS module:
Table 4.3: Features
Receiver Type
72-channel u-blox M8 engine
GPS/QZSS L1 C/A, GLONASS L10F,
BeiDou B1
SBAS L1 C/A: WAAS, EGNOS, MSAS
Galileo-ready E1B/C
Maximum Navigation
Update Rate
Single GNSS: Up to 18 Hz
Concurrent GNSS: Up to 10 Hz
Accuracy
Position: 2.5 m CEP
SBAS: 2.0 m CEP
Acquisition
Cold starts: 27 s
Aided starts: 4 s
Reacquisition: 1 s
Sensitivity
Tracking and navigation: -164 dBm
Cold starts: -147 dBm
Hot starts: -156 dBm
Assistance GNSS
AssistNow Online
AssistNow Offline
AssistNow autonomous
OMA SUPL and 3GPP compliant
Table 4.4: Measurement Data
Values Description
UTC Time
2017~ Year
1 ~ 12 Month
1 ~ 31 Day
0 ~ 23 Hour
0 ~ 59 Minute
0 ~ 59 Second
Position
Longitude
(+- *10
-7
degree), a minus sign if south of the equator
Latitude
(+- *10
-7
degree), a minus sign if west of the prime meridian
Altitude
(*10
-3
m) height above mean sea level
Speed
(*10
-3
km/hr) ground speed
Number of satellites Satellites used for navigation
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