Airborne Gravimeter

GT-2A - CMG (Canadian Micro Gravity)

The very large dynamic range provides high precision data even in turbulent flying conditions; data is acquired through short periods of saturation in extreme turbulence by the automatic application of a reduced order Kalman filter, enabling platform misalignment to be computed and hence controlled; the automatic calibration program computes accelerometer scale factors and errors in perpendicularity between the accelerometer sensitive axis and the platform surface. The GT-2A installation in a fixed wing aircraft is shown in Fig 1 (courtesy of Excalibur).