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Hardware Integration Guide
Parameter/Feature
QZSS
Tracking
Satellite
channels
Acquisition
Standalone
Hot start:
Time To
First Fix
Warm start
(TTFF)
1,2,4,6
Cold start
Tracking
Sensitivity
(GPS,
Cold start Acquisition
GLONASS,
BeiDou)
Hot start Acquisition
Horizontal Position accuracy
1,3,4,5,6,
Altitude accuracy
1,3,4,5,6
Velocity accuracy
Tracking update rates
3
SBAS support
NMEA 0183 Version
Message
Protocol
Supported Sentences
1 Open sky, all SV RF signal level = -130dBm, Number of GPS SVs > 6, Number of Glonass SVs>5, Number of Galileo
SVs>5, Number of BeiDou SVs>5
2 TTFF values show results in worst conditions (as an external host user): timing measurement start when GPS control
request is sent on AT command interface and stop when NMEA frames (1Hz update) display 2D fix information.
3 Scenarios used for accuracy measurements simulate car travel including direction, altitude and speed variations.
4 The performance are obtained by using external Pre-SAW and LNA for conducted test setup at Room temperature, it is
used to simulate the active antenna as customer's application.
5 1Hz Navigation used for all tracking/navigation tests.
6 GNSS constellations used: GPS + GLONASS + Galileo + Beidou
7 Accuracy data are provided Circular Error Probable, CEP-50 / CEP-95. Means that 50%/95% of the positions returned
calculated have an error lower or equal to the accuracy value.
8 Tracking sensitivity is the lowest GNSS signal level for which the device can still detect an in-view satellite 50% of the
time when in sequential tracking mode..
9 Acquisition sensitivity is the lowest GNSS signal level for which the device can still detect an in-view satellite 50% of the
time.
Note:
All GNSS characterization data are measured in conducted RF path with GNSS simulator at room
temperature.
1.4.2.
GNSS Antenna Interface
The GNSS Antenna Interface is defined in the table below.
Table 15.
GNSS Antenna Interface Pads
Pad
Name
BA4
GND
BA5
GNSS_ANT
41110461XXXX
4,5,6
1,3,4,5,6,
Direction
Input
Rev 0.12
Value
L1
40
118
1 s
27 s
29 s
-163 dBm
-158 dBm
-145 dBm
7
2 / 5
7
4 / 10
0.1
1 Hz
WAAS, EGNOS, MSAS,GAGAN
V3.0
GSV, GNS, GSA, GGA, GRS, RMC, VTG
Function
GNSS Antenna Ground
GNSS Antenna Interface
January 16, 2017
Introduction
16
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