EKINOX Series
– Hardware Manual
EKINOXV3HM.1.2
2. Performance specification
2.1. Inertial measurement unit
The IMU is the core component of an inertial navigation system. Leveraging on MEMS technology and an
innovative proprietary integration, the Ekinox IMU delivers an exceptional performance while maintaining a
reasonable cost.
2.1.1. Accelerometers
The Ekinox IMU contains a set of 3 MEMS capacitive accelerometers. Coupled with advanced filtering
techniques and sculling integrals, these accelerometers will provide quartz performance level. Thanks to a
very low VRE, the performance is maintained in highly vibrating environments.
A2
A3
Remarks
Full scale (
g)
± 8
± 14
Velocity Random Walk (µ
g/√hz)
7
40
Allan variance – @ 25°C
In run bias instability (µ
g)
2
10
Allan variance – @ 25°C
Vibration Rectification Error (µ
g/g²)
<200
<50
VRE – 20 Hz – 2 kHz
Bandwidth (Hz)
433
433
Attenuation of 3 dB
Orthogonality (°)
< 0.02
< 0.02
Over temperature range
2.1.2. Gyroscopes
The set of 3 high end tactical grade MEMS gyroscopes is sampled at 2.3 kHz. A specific integration design
as well advanced signal processing (FIR filters, coning integrals) ensure best performance in vibrating
environments.
G4
Remarks
Full scale (°/s)
± 300
In run bias instability (°/hr)
0.5
Allan variance – @ 25°C
Angular Random Walk (°/√hr)
0.14
Allan variance – @ 25°C
Bandwidth (Hz)
60
Attenuation of 3 dB
Orthogonality (°)
< 0.02
Over temperature range
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