Apogee Imu; Accelerometers; Gyroscopes; Surface Form Factor - SBG Navsight Ekinox IMU Hardware Manual

Navsight Solution – Hardware Manual

2.2.2. Apogee IMU

Apogee IMU is considered as the highest accuracy for a MEMS Inertial measurement unit. This IMU is the
unit of choice for challenging environments and benefits from its ultra low noise gyroscopes. Sensors
specifications are listed below.

2.2.2.1. Accelerometers

Full scale ( g )
Velocity Random Walk (µ g /√hz)
In run bias instability (µ g )
Bandwidth (Hz)
Orthogonality (°)

2.2.2.2. Gyroscopes

Full scale (°/s)
In run bias instability (°/hr)
Angular Random Walk (°/√hr)
Bandwidth (Hz)
Orthogonality (°)

2.2.2.3. Surface form factor

The Apogee IMU enclosure is composed of two anodized
aluminum parts (6061), one for the cover and one for the base
plate. The device uses high quality alloys and connectors to
offer a full IP-68 enclosure and a good resistance to harsh
environments.
The Apogee IMU connector is a high quality push pull connector
that offers IP-68 protection even unconnected.
Warning: The Apogee IMU surface model is not
designed for prolonged operation in salt water
environments. Check section Maintenance for more
details about operation in sea water environments.
A3
± 10
30
7
100
< 0.02
G3
± 200
0.05
0.012
100
0.02
13/74
Remarks
Allan variance – @ 25°C
Allan variance – @ 25°C
Attenuation of 3 dB
Over temperature range
Remarks
Allan variance – @ 25°C
Allan variance – @ 25°C
Attenuation of 3 dB
Over temperature range
Figure 2.5: Apogee Surface IMU
NAVSIGHTHM.1.3