NavikEye is the Multiconstellation GNSS simulator from MaxEye Technologies. NavikEye Multi-constellation GNSS Simulator offers realtime generation of various global satellite navigation signals including dynamic scenarios and HIL simulation. The scenario generation can be fully automated using the remote TCP commands via Ethernet. This enables the implementation of dynamic HIL environment. The HIL test system can feed the realtime location coordinates, velocity and other vehicle dynamics to the GNSS Simulator. Based on this GNSS simulator updates the receiver position in realtime. The simulator supports moving receiver scenarios with predefined waypoints using NMEA and KML files. NavikEye GNSS Simulator is based on National Instruments scalable and software defined PXI architecture powered by LabVIEW.

1. NavikEye
Multi Constellation
GNSS Simulator Specifications
R&D and Production Test

2. NavikEye GNSS Simulator
NavikEye Multi-constellation GNSS Simulator
offers realtime generation of various global
satellite navigation signals including dynamic
scenarios and HIL simulation. The scenario
generation can be fully automated using the
remote TCP commands via Ethernet. This
enables the implementation of dynamic HIL
environment. The HIL test system can feed the
realtime location coordinates, velocity and other
vehicle dynamics to the GNSS Simulator.
Based on this GNSS simulator updates the
receiver position in realtime.
The simulator supports moving receiver
scenarios with predefined waypoints using
NMEA and KML files. NavikEye GNSS
Simulator is based on National Instruments
scalable and software defined PXI architecture
powered by LabVIEW.
Key Features
 Support for all global satellite navigation
systems (GPS, IRNSS, GLONASS, Galileo,
BeiDou and QZSS)
 42 configurable satellites per RF Signal
Generator
 Hardware-in-the-loop (HIL) realtime simulation
of the vehicle dynamics position, velocity, jerk
and acceleration
 Trajectory Simulation: Static and Dynamic
(KML and NMEA)
 Integrated MAP view for the simulated co-
ordinates
 Real-time satellite power level and on/off
control for individual satellites
 Easy to use graphical user interface and Remote
APIsupport

3. NavikEye GNSS Simulator
GNSS Constellations
GNSS Simulator Specifications
Feature Value Comments
Number of Simulated Satellites 42 Simultaneous generation of up to
42 channels from one RF output
Number of RF outputs 1
HIL streaming rate 50 Hz
HIL Latency 20 ms
Elevation Angle 0° to 90° Removes the satellites from the
visible satellites based on the user
specified elevation angle value
Signal Dynamics
Velocity 1000kmph
Simulation time User Configurable Time and
Date (UTC) or System Time
Leap second simulation
Trajectory configuration Dynamic waypoint files
KML and NMEA Formats
Static
Satellite Vehicle Parameters Individual satellites ON/OFF
Individual satellites power
control
Signal Accuracy
Pseudorange ± 0.001 m Uncertainty in the phase offset
calculated from the range
Pseudorange rate ± 0.001 m/s Uncertainty in the simulation of the
Doppler shift calculated from the
range rate
Interchannel bias 0 Uncertainty in the carrier phase of
any two satellites
Feature Constellation Frequency
band
Signal Frequency
(MHz)
Chip
Rate
(MHz)
Supported Constellations GPS
GLONASS L1
Galileo E1
BeiDou B1
QZSS
IRNSS (NavIC)
L1
L1
L1
L1
L1
L5
C/A
C/A
B and C
I
C/A
SPS
1575.420
1602.000
1575.420
1561.098
1575.420
1176.450
1.023
0.511
1.023
2.046
1.023
1.023

4. NavikEye GNSS Simulator
GNSS Simulator Specifications (Instrument Dependent)
Parameters AST-1000
(Vector Signal
Transceiver)
NI PXIe-5840
(Vector Signal
Transceiver)
NI PXIe-
5644R/
NI PXIe-
5645R/
NI PXIe-5646R
(Vector Signal
Transceiver)
NI PXIe-5672
(Vector Signal
Generator)
NI PXIe-5673E
(Vector Signal
Generator)
USRP-2920
USRP-2922
USRP-2930
USRP-2932
(RF
Transceiver)
USRP-2940R
USRP-2942R
USRP-2950R
USRP-2944R
USRP-2952R
USRP-2954R
(RF
Transceiver)
Number of
Constellations
Multi-
Constellation
Multi-
Constellation
Multi-
Constellation
Single-
Constellation
Single-
Constellation
Single-
Constellation
Multi-
Constellation
Number of
Satellites per RF
output
42 42 TBC 12* 12* 12* TBC
Number of RF
outputs
1 to 4 1 1 1 1 1 2
Frequency
Range
9 KHz to 6GHz 9 KHz to 6GHz 65 MHz to 6
GHz
250 kHz to 2.7
GHz
50 MHz to 6.6
GHz
50 MHz to 2.2
GHz
(2920/2930)
400 MHz to 4.4
GHz
(2922/2932)
50 MHz to 2.2
GHz
(2940R/2950R)
400 MHz to 4.4
GHz
(2942R/2952R)
10 MHz to 6
GHz
(2944R/2954R)
Initial
Frequency
Accuracy
± 200 × 10 -9 ± 200 × 10 -9 ± 200 × 10 -9 ± 50 ppb ± 3 × 10-6 2.5 ppm 2.5 ppm
Power Level
Accuracy
(Typical)
± 0.45 dB ± 0.45 dB ± 0.5 dB ± 1.0 dB ± 0.6 dB - -
RF Output
Harmonics
-32 dBc
@15dBm
-32 dBc
@15dBm
-30 dBc
@<5dBm
–35 dBc,
maximum
@0dBm
-30 dBc,
maximum
- -
RF Output
Nonharmonic
Spurious
-63 dBc
Offset ≤ 1MHz
-63 dBc
Offset ≤ 1MHz
-75 dBc
Offset ≤ 1MHz
–58 dBc,
maximum
@0dBm
–51 dBc,
maximum
- -
Phase Noise
@ 20KHz offset
-102 dBc/Hz -102 dBc/Hz -99 dBc/Hz -102 dBc/Hz -105 dBc/Hz - -
Output Average
Noise Density
@-30dBm
power (Typical)
-165 dBm/Hz -165 dBm/Hz -168 dBm/Hz -150 dBm/Hz -152 dBm/Hz - -
Operating
temperature
range
0 °C to 45 °C 0 °C to 45 °C 0 °C to 55 °C 0 °C to 55 °C 0 °C to 55 °C 23 °C ± 5 °C 23 °C ± 5 °C
RF Output
Connector Type
SMA Female SMA Female SMA Female SMA Female SMA Female SMA Female SMA Female
Recommended
Application
Production,
R&D,
Functional and
Performance
Test
Production,
R&D,
Functional and
Performance
Test
Production,
R&D,
Functional and
Performance
Test
Production,
R&D,
Functional and
Performance
Test
Production,
R&D,
Functional and
Performance
Test
Production,
R&D,
Functional Test
Production,
R&D,
Functional Test
*Applicable to GPS and subject to system configuration.
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