• By
    Authored by LORD Corp. 2015
  • Posted
    Monday, July 27, 2015 - 10:45

Inertial sensors for surveillance, stabilization of airborne intelligence, and reconnaissance

Dynamic Platform Challenges

Imaging systems operating from dynamic platforms are subject to angular motion and jitter that undermine performance. Countering low frequency disturbances and actively stabilizing platforms requires precise orientation feedback. LORD MicroStrain’s 3DM-GX4 family of inertial sensor products is ideally suited for this purpose.

LORD Microstrain Inertial Sensors provide:
∙ Low gyro white noise
∙ High-output option
∙ Precise gimbal feedback
∙ Miniature, lightweight solution
∙ Cost-effective line-of sight surveillance
∙ Identical performance between devices
3DM-GX4-25™ AHRS - Attitude Reference Heading System
The 3DM-GX4 -25™ is a miniature industrial-grade attitude heading reference system (AHRS) with integrated magnetometers, high noise immunity, and exceptional performance.
∙ Best in class 10°/hour gyro bias stability
∙ 0.001°/s/g2 rms vibration rectification error
∙ Gyroscope range: ±75, 150, 300 (standard), 900°/sec
∙ Accelerometer range: ±5 (standard), 16 g

Precise Feedback Under Linear Acceleration

MicroStrain 3DM-GX4-45 GPS aided AHRS

Currently in use by defense contractors for stabilization applications, the 3DM-GX4-45’s Extended Kalman Filter provides precise stabilization feedback in high linear acceleration environments that can cause typical sensors to report attitude erroneously. The 3DM-GX4-45 mitigates outer loop tracking errors and provides improved gyro white noise performance.

In low acceleration settings, LORD MicroStrain’s 3DM-GX4-25 AHRS can be used effectively. Its low latency and high data output rates provide the precision inner-loop feedback necessary to achieve fine stabilizing performance.

LORD MicroStrain’s miniature inertial sensors provide a high performance sensing solution where size, weight, and power must be minimized. Factory calibration is performed on each sensor system over its full operating temperature range, correcting for a multitude of MEMS-sensor-related errors, and ensuring identical performance between devices.