Page 11 - EMCORE Navigation & Inertial Sensing Brochure

MEMS IMU & GPS/INS

EMCORE’s MEMS IMUs and Navigation Systems (GPS/INS), based on our Systron Donner Quartz
ineRTial MeaSUReMenT UniTS & naVigaTiOn SySTeMS
MEMS technology, deliver unprecedented performance in their class. They are designed for a
wide variety of high-precision Commercial, Industrial, Marine, and Defense Applications.
SDI500 Quartz MEMS Tactical Grade IMU
The SDI500 IMU outperforms other MEMS IMUs and delivers comparable performance to older,
costlier optical IMUs in a lower power, smaller, and lighter form factor. With 1°/hr gyro bias, 1 mg
accelerometer bias stability and very low 0.02°/√hr Angle Random Walk (ARW) over wide
temperature ranges, the SDI500 is designed to achieve the demanding performance levels
required in sophisticated systems applications and is well-suited for use by Integrators and OEMs.

Features/Benefits Applications
n Excellent bias stability n Missile & torpedo guidance,
control & targeting
n Unprecedented low angle random walk values
n Precision guided munitions
n Superior vibration performance n Defense fixed wing and helicopter
n Miniature, small footprint size (19 in. ) n UAVs and UUVs
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n Multiple data formats/output interfaces n Tank turret stabilization
n Platform stabilization

SDI170 Quartz MEMS Tactical Grade IMU
EMCORE’s SDI170 IMU is designed as a performance-compatible inertial system that is form, fit, and
functional with a legacy RLG-based IMU product, but with superior overall performance, versatility,
and a significantly higher MTBF rating over ruggedized environments. The tactical performance of
the SDI170 IMU is based on EMCORE’s mature, proven, dependable, and accurate quartz MEMS
inertial sensor technology in our SDI500 tactical-grade IMU.
Features/Benefits Applications
n 1°/hr gyro & 1 mg accel bias over temperature n Precision AHRS
n 0.02°/√hr angle random walk–5X better than RLG-based n GPS-aided navigation systems
IMU it is designed to replace n Autonomous & remotely operated
n <1 second start-up time to valid data vehicles
n <33 in. rugged size n Tactical weapons: missile &
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torpedo guidance, control &
n 20 year lifetime without recalibration, greater than targeting
100,000 hour MTBF

EMCORE MEMs IMUs vs. COMpEtItOR

EMCORE SDI500 & SDI170 Honeywell HG1700
Parameter Gyro Channels Acceleration Channels Gyro Channels Acceleration Channels
Performance
Bias 1°/hr - 10°/hr 1.0 mg - 2.0 mg 1°/hr - 5°/hr 1.0 mg - 3.0 mg
Bias In-Run Stability 1°/hr - 2°/hr 100 μg - 200 μg N/A N/A
Random Walk (Noise) <0.02°/√hr 100 μg/√Hz <0.125 - 0.5°/√hr 0.65 FPS/√hr
Data Rates 600 Hz (Control) / 100 Hz (Guidance) - other rates available 600 Hz (Control) / 100 Hz (Guidance)
Physical & Environmental
Operating Temperature Range -55 °C to +85 °C -54 °C to +85 °C
Dimensions SDI500 2.9”D x 2.9”H, SDI170 3.5”D x 2.9”H HG1700 AG 3.5”D x 2.86”H
Weight SDI500 1.3 lbs, SDI170 1.95 lbs HG1700 AG <2 lbs
Volume SDI500 19 cubic in., SDI170 33 cubic in. HG1700 AG 33 cubic in.

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