Aviation Navigation TDF71A Airborne Optical Gyro Inertial Navigation
1 Introduction
The airborne optical gyro inertial navigation system (INS) employs optical gyroscopes and quartz accelerometers as its core sensing components, utilizing either a strapdown or modulated (dithered) system architecture. With high-speed embedded navigation algorithms, it delivers real-time positioning and orientation data. This product series integrates satellite-based (GNSS), celestial, barometric altimeter, radio navigation, and visual perception inputs through configurable fusion architectures, tailored to mission-specific requirements. Supporting diverse operational modes ranging from standalone inertial navigation to hybrid multi-sensor solutions, it provides comprehensive platform navigation parameters including 3D position, velocity, attitude, and angular rates.
2 Application Fields
Suitable for fixed-wing UAVs, rotary-wing UAVs, and specialized airborne vehicles.
3 Performance Characteristics
Supports switching between self-alignment, moving-base alignment, and transfer alignment based on customer needs.
Supports multi-sensor fusion, incorporating satellite, celestial, altimeter, radio, and visual navigation data.
Capable of alignment on ground-based vibrating platforms and in-flight alignment.
Equipped with system fault detection and alarm functions.
4 Main parameters
| Type |
TDF71A |
| Accelerometer |
Months Bias Repeatability |
≤20μg |
| Months Scale Factor Accuracy |
≤20ppm |
| Gyro |
Bias Repeatability |
≤0.01°/hr |
| Scale Factor Accuracy |
≤20ppm |
| Random walk |
≤0.005°/√hr |
| Features |
Position accuracy |
Pure inertia |
≤2nm/1h |
| Inertial navigation satellite combination |
better than satellite accuracy |
| Velocity accuracy |
Pure inertia |
≤1.5m/s |
| Inertial navigation satellite combination |
≤0.2m/s |
| Angular Rate |
≥±400°/sec |
| Angular Acceleration |
100000°/sec2 |
| Acceleration |
＞25g |
| Angular Attitude |
Any Orientation |
| Alignment time |
≤8min |
| Input/output |
3 RS422 full-duplex serial ports, 1 100M Ethernet port |
| Alignment Time |
Time |
＜5min |
| AHRS Applications Performance |
Heading Accuracy |
Pure inertia |
≤0.2°sec(L) |
| Satellite navigation combination |
≤0.1°sec(L) |
| Pitch & Roll Accuracy |
Pure inertia |
≤0.03° |
| Satellite navigation combination |
≤0.02° |
| Power consumption |
＜15W |
| Characteristics |
Dimensions |
130×130×100 |
| Weight |
＜2.2kg |
| Temperature |
-40℃~60℃ |
| Shock |
15g,Half-sine wave 11ms |
| Input Voltage |
DC24V(±25%) |
| cooling |
Conduction to mounting plate |
| Vibration |
20~2000Hz,6.06g |
| MTBF |
＞20000 hours |
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Aviation Navigation TDF71A Airborne Optical Gyro Inertial Navigation Images
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