Combination GPS/GLONASS Receivers:
GPS and GLONASS Combination Antennas:
GL-NDV-68E
GPS/GLONASS Navigation RECEIVER
The Mode I is system-primary and automatically selected: tracking off all GLONASS satellites in view, free channels track GPS satellites.
Other modes are available upon pilot selection:
- The Mode II: tracking off all GLONASS satellites in view
- The Mode III: tracking off all GPS satellites in view. LI frequency, C/A Code GLONASS and GPS, digital processing (WAAS/EGNOS in future)
- Four-dimensional navigation
- Expanded digital interfacing capabilities.
The digital receiver computes position, updates ten times a second, measures position to 15 meters RMS, and measures velocity to 0.1 m/s RMS.
Main processing functions, handled by the GL-NDV68E, include:
- GPS position and velocity sensing
- The Receiver Autonomous Integrity Monitoring (RAIM), required for Non Precision Approach, Terminal and En Route stages of flight; the Fault Detection and Exclusion Algorithms (FDE) detect and remove erroneous measurements.
- Providing digital interfacing.
GL-NDV68E can use real-time RTCM differential correction for GLONASS and GPS. Advanced signal-processing techniques, such as Differential GNSS and Kinematics Carrier-Phase Tracking will allow GNSS systems to be certified for Category (CAT) I, II Precision Approaches in the future.
Physical Characteristics
Dimensions
87.6 x 57.2 x 15mm
Weight
< 100 g
Connectors
30 pin for digital, MMCX for antenna
Electrical
On-board power supply accepts any unregulated voltage between 6V and 25V
On-board back up battery saves data for about 10 years Typical power consumption is 1.5W
Environmental
Operating
–40 °C to +80 °C
Storage
–60 °C to +85 °C
On-board power supply accepts any unregulated voltage between 6V and 25V
Input/Output
Two high speed (115.2 Kbps)standard RS232 Serial Ports
NMEA0183
1 PPS output (TTl) synchronized to GPS, UTC, or GlONASS, < 40ns
Accuracy
Position
10 meters RMS
Altitude
15 meters RMS
Velocity
0.1 m/s RMS (steady-rate)
Time
Universal Coordinated Time to the nearest microsecond
Update rate
Up to 10 Hz update rate for real time position & raw data (code and carrier)
Acquisition time
Hot Start
< 30 s
Cold Start
< 150 s
Reacquisition
< 1 s
Dynamics
Velocity
2000 m/s
Altitude
up to 40 km
Acceleration
20G
Jerk
10 G/s
MTBF
No less 20000 h
