The Athena 111 from Rockwell Collins is an integrated inertial navigation system (INS)/GPS and air data sensor suite. It uses Kalman filter algorithms GPS/magnetometer reference to help you achieve superior accuracy during dynamic maneuvers. The unit includes a built-in automatic magnetometer calibration that simplifies the installation process.

Key Features & Benefits
*Provides attitude and heading measurement with static and dynamic accuracy
*Includes a differential ready, WAAS-enabled GPS receiver
*Full air-data measurements

Specifications
INS/GPS Performance:
Update Rate : 100Hz
Start-up Time : 10 seconds (initial attitude); 1 minute (full alignment)
Heading Range : ? 3.14 rad (? 180 deg)
Attitude Range Pitch : ? 1.57 rad (? 90 deg)
Attitude Range Roll : ? 3.14 rad (? 180 deg)
Altitude Range: -304.8 m to 15,240 m (-1,000 ft to 50,000 ft)
Baro-inertial Altitude Accuracy: <13.7 m (45 ft) at sea level, <91.4 m (300 ft) at 15,240 m (50,000 ft) altitude
GPS Range : Worldwide
Lat/Long Position Accuracy GPS C/A Code; differential-ready; WAAS enabled
GPS Antenna Power : 5V
Airspeed Accuracy : <2 knots @ 40 knots, <1 knot @ 60 knots
Max Airspeed : 650 knots standard, 165 knots optional

IMU Performance:
Maximum Angular Rates : ? 3.49 rad (? 200 deg/s)
Maximum g Range : ? 10 g

Attitude Heading Accuracy (1 Sigma) with GPS:
Pitch/Roll Accuracy : .005 rad (0.3 deg)
Heading Accuracy : .008 rad (0.5 deg)?

Extended GPS Outage (1 Sigma):
Pitch/Roll Accuracy : .008 rad (0.5 deg)?
Heading Accuracy : .017 rad (1 deg)?

Position and Velocity Accuracies with GPS Aiding:
Horizontal velocity accuracy 2 : 0.1 m/sec rms in each direction
Vertical velocity accuracy 2: 0.15 m/sec rms
Horizontal position accuracy 2: 2.5 m CEP3 typical standalone; 2.0 m CEP typical with SBAS or local area DGPS4
3D position accuracy 2: 5.0 m SEP5 typical standalone; 3.0 m SEP typical with SBAS or local area DGPS4

1 Dependent on the accuracy of the measured external magnetic field
2 When operating with GPS aiding (in modes 1, 2 or 5) from a C/A code receiver
3 CEP = Circular Error Probable; the radius of a horizontal circle, centered at the antenna?s true position, containing 50% of the fixes
4 Depends on the accuracy of the correction data of the DPGS or SBAS service
5 SEP = Spherical Error Probable; the radius of the sphere, centered at the true position, contains 50% of the fixes

Physical SpecS
Size: 13.9 x 12.7 x 6.35 cm (5.5 x 5.0 x 2.5 in)
Weight: 756 g (1.7 lb)
Enclosure: Aluminum
Power :4.5 W nominal @ 18-36 VDC
Data Storage: 32 MB disk on chip, non-volatile

Power
Voltage Limits: The unit operates with an input from 18 VDC to 36 VDC, nominal 4.5W
Starting Current: The starting current does not exceed 2.5 amps at 28 VDC
Current Limits. The running current does not exceed 0.3 amps at 28 VDC

Environmental
Operating Temperature: -40 to 70 deg C
Non-operating Temperature: -54 to 85 deg C
Operating Vibration: MIL-STD-810
Humidity: Sealed enclosure
Serial Input/Output: RS-422 INS, baud: 115.2 kb/s