Combination GPS/GLONASS Receivers:
GPS and GLONASS Combination Antennas:
GtL-NDV735
NDV-735 Miniature GPS/GLONASS Module
The NDV-735 24-channel GPS/GLONASS receiver provides continuous all-in-view navigation satellite tracking.There are three modes of satellite tracking:
There are three modes of satellite tracking:
The Mode I is system-primary and automatically selected: receiver channels track all GLONASS satellites in view, the rest channels track GPS satellites.
Other modes are available upon pilot selection:
- Mode II: tracking of all GLONASS satellites in view;
- Mode III: tracking of all GPS satellites in view.
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
50 x 35 x 13mm
Weight
< 80 g
Connectors
20 pin (2x10) 2mm pitch for digital, MMCX for antenna
Electrical
On-board power supply accepts any voltage between 2.4V and 5.5V
On-board back up battery saves data for about 10 years
Typical power consumption is < 0.5W
Environmental
Operating
–40 °C to +80 °C
Storage
–60 °C to +85 °C
High shock and vibration resistance
Input/Output
Two high speed (115.2 Kbps) standard RS232 Serial Ports
NMEA0183
1 PPS output (3.3V, 24mA, 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
515 m/s
Altitude
up to 18 km
Acceleration
10G
Jerk
10 G/s
MTBF
No less 20000 h
