IMU 42, 42 cv & 42xp

Tactical inertial measurement unit

The IMU42 is a compact, lightweight, high performance Inertial Measurement Unit (IMU) featuring the best size/performance ratio available with extremely high bandwidth. The IMU 42 is ideally suited for applications requiring navigation, line-of-sight stabilization and flight control. It employs the latest closed-loop fiber-optic gyro (FOG) and linear rebalanced accelerometer technology. It is available in multiple configurations to meet different price and performance requirements.

Compatible for the following applications:
Stabilized electro-optical payloads
Guided Munitions
Anti aircraft and air defense missiles
Aerial pods
Advanced targeting pods

IMU 42/42cv/42xp Benefits

Two optional grades:

The IMU42 is offered in two performance grades, a variety of configurations, all in the same compact form.

Compatible with legacy IMU products

Form, fit and function performance replacement for other known IMUs.

Hard mounted with very high bandwidth:

Suitable for LOS stabilization, missiles, and demanding environments


Our products are ITAR-free and are entirely designed and developed in-house

Technical Information

The IMU 42 is a tactical grade IMU containing closed-loop fiber optic gyros and linear rebalanced accelerometer technology. The IMU 42 is a versatile inertial measurement system and comes in a variety of configurations supporting both navigation and control messages, several communication regimes tailored for different applications, with interfaces matching a legacy FOG unit. The IMU42, IMU42 CVand the IMU42XP offer unmatched SWaP to performance ratio. Similarly to other Cielo products – the unit supports an advanced BIT with detailed fault isolation.

pdf Cielo_IMU42_F_2021
ParametersIMU 42 CVIMU 42IMU 42 XP
Bias repeatability (day to day) [°/hr]< 0.5< 0.2< 0.05
Bias residual (over temperature) [°/hr]< 1< 0.5< 0.1
Bias stability (constant temperature) [°/hr]
Dynamic Range [°/sec]±1500±1500±1500
Angular Random Walk [°√hr]
Scale Factor Linearity [ppm]303030
One year bias composite error [ug]400010001000
One year SF composite error [ppm]200010001000
Dynamic range [g]±15±70±70

Cielo Inertial Space Solutions

Space applications require accurate, high bandwidth systems.
Additional unique requirements include the absolute need for observation systems to provide
line-of-sight stabilization pointing and to overcome the behavioral problems often caused by radiation in space.

Explore Success Stories


Cielo has developed an advanced new generation IMU system
based on the closed loop Fiber Optical Gyroscopes (FOG) and linear rebalanced accelerometer technology.

Explore Success Stories