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The LandMark^TM 20 GPS/AHRS eXT provides internally temperature compensated RS485 output of delta velocity, delta theta, heading, pitch and roll angle and altitude information as well as integrated GPS data from a 50 channel C/A code 4Hz position update rate GPS receiver. GPS aiding is included in all units for turning error correction as well as for continued output during short-term GPS dropouts.

The signature feature is the integrated GPS and inertial data, which is optimized with fully compensated bias, scale factor, misalignment, g-sensitivity, heading, pitch and roll angles, altitude information integrated with a 4Hz GPS position data update rate GPS. This is in a ruggedized environmentally sealed package that is EMI resistant and includes a MILSPEC connector. Three different models with different software loads are available (see feature guide) to meet the requirements of users. The eXT unit is highly durable and can withstand environmental vibration, shock and EMI typically associated with commercial aircraft requirements.

• Enhanced Performance GPS-Aided MEMS AHRS to Full INS/GPS

-200 GPS Aided AHRS

-300 INS with GPS, Mags. & Baro.

-400 INS/GPS with Mags. & Baro.

• Rugged Environmentally Sealed Packaging & MILSPEC Connector

• Low Noise Gyros & Accelerometers

• Fully Compensated Bias, Scale Factor, Misalignment, g-Sensitivity, Heading & Altitude

• In-Run Gyro Bias 30° /hour 1σ

• Pitch, Roll & Yaw Angles 0.5° typical

• Redundant Altitude ±3 meter typical

• Velocity Correction for Turning Errors & GPS Dropouts

• Single RS485 Output 100Hz

• GPS Receiver – 50 Channel & 4 Hz Position Data Update Rate

• Supports DGPS, WAAS, EGNOS and MSAS

• Spare Analog Port for Air Data or Digital Port for Wheel Counter

The LandMark^TM 20 GPS/AHRS eXT is well suited for low cost flight control, navigation, antenna stabilization and pointing, general aviation as well as laboratory use.