The GuS from Rockwell Collins is an integrated sensor suite that gives you complete INS/GPS/ADAHRS and flight control capabilities. It uses microelectromechanical systems sensors, including accelerometers, rate gyros, a magnetometer and air data pressure sensors, plus a differential-ready, Wide Area Augmentation System-enabled GPS receiver. Built-in, automatic hard iron compensation lets you quickly and easily install the unit.

Athena GuS includes all the analog and digital I/O interface hardware required to accommodate a variety of vehicle configurations and payloads. Weighing only 0.25 lbs., it has a low-volume footprint of 4.5-by-2-by-1 cubic inches and meets typical environmental requirements for shock, vibration, temperature and humidity. Rockwell Collins also provides an external magnetometer unit, sold separately, that can interface with the GuS if required.

Key Features & Benefits
*Built-in automatic magnetometer
*Calibrated to simplify installation
*Accurate roll, pitch and heading in dynamic environments and sustained turns
*WAAS-enabled, differential-ready GPS
*Microelectromechanical systems IMU
*C/A Code GPS receiver
*Single board architecture
*High-speed micro controller
*Air pressure transducers
*Product documentation and customer support

Performance
INS/GPS Performance:
Update Rate: 100 Hz
Start-up Time :10 seconds (initial attitude); 1 minute (full alignment)
Altitude Range: -304.8 m to 15,240 m (-1,000 ft to 50,000 ft)
Altitude Accuracy: 13.7 m (45 ft) at sea level, 25.9 m (85 ft) at 6,096 m (20,000 ft) altitude
Lat/Long Position Accuracy: GPS C/A Code; differential-ready, WAAS enabled
Airspeed Accuracy: < 2 knots @ 40 knots, < 1 knot @ 60 knots
Max Airspeed :200 knots/option for 400 knots
GPS Antenna:Active, 5 V

IMU Performance:
Maximum Angular Rates: ? 3.49 rad (200 deg/s); option for ? 10.47 rad (600 deg/s)
Maximum g Range: ? 8 g

Attitude Accuracy (1 ?) with GPS:
Pitch/Roll Accuracy:.0034 rad (0.2 deg)
Heading Accuracy: .0104 rad (0.6 deg)?

Extended GPS Outage (1 ?):
Pitch/Roll Accuracy: .0104 rad (0.6 deg)?
Heading Accuracy: .0174 rad (1 deg)?

Input/Output:
PWM/Discrete Input :(4) channels
PWM/Discrete Output: (10) channels
Serial Connections (4): (2) RS-232; (2) RS-422 INS

1 Using an adequate external magnetic field measurement

Physical Specs
Size: 11.43 x 5.08 x 2.54 cm (4.5 x 2 x 1 in)
Weight: .1134 kg (0.25 lb)
Enclosure: Aluminum alloy
Power: < 4 watts (nominal) @ 9-18 VDC

Power
The standard configuration power input is 9-18 VDC (12 volt DC system). The power consumption is <4 watts nominal. An optional configuration for nominal 28 VDC power is also available. Input power current limiting is not provided internal to GuS. We recommend that the input power be current limited to 5 AMP rating.

Environmental
Operating Temperature: -40 to 70 deg C
Non-operating Temperature: -54 to 85 deg C
Operating Vibration/Shock: MIS-STD-810
Humidity: 95% non-condensing