


Ellipse-E
External GNSS for Navigation
Ellipse-E is a versatile miniature inertial navigation sensor that connects to external GNSS receiver to provide navigation data, and other sensors such as DVL or odometer.

Description
Ellipse-E is a small-sized high performance Inertial Navigation System. It provides Roll, Pitch (RTK), Heading, and Heave, and computes Navigation data when connected to an external GNSS receiver. It accepts Odometer aiding to maintain the best accuracy in challenging environments. This light-weight sensor (47 grams) includes a MEMS-based Inertial Measurement Unit (IMU) and runs an enhanced Extended Kalman Filter (EKF) which fuses inertial and aiding information to provide accurate real time orientation and navigation data.
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Specifications
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Environment
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Non-operating shock tolerance [g]
2000
Operating shock tolerance [g]
8
Min. operating temperature [C]
-40
Max. operating temperature [C]
85
Splashproof casting
Y
Water resistant casting
Y
Water resistance [m]
2
Casting and coating
IP68
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Power Supply
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Min. Voltage (DC)
5
Max. Voltage (DC)
36
Power consumption [W]
0.3
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Accelerometers
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Num. of Accelerometers
3
Range [max g]
8
Bandwidth [ Hz ]
390
Alignment Error [ ± ° ]
0.05
In-Run Bias Stability [mg]
2
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Operational
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Output data formats
Binary eCom protocol, TSS
Output frequency [ Hz ]
200
Interface types
Interfaces
RS-422, USB, CAN
Other interfaces and additional information
CAN 2.0A/B - up to 1 Mbit/s, RS-232, RS-422, USB - up to 921,600 bps.
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Pressure sensor
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Pressure sensor
Y
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Gyroscopes
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Num. of Gyroscopes
3
Range [± ° / sec]
450
In-Run Bias Stability [ °/ hr]
7
Bandwidth [ Hz ]
133
Non-linearity [ % ]
0.05
Alignment Error [ ± ° ]
0.05
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General
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Year of last update
2020
Year of initial development
2014
System components
Accelerometer(s), Gyroscope(s), Magnetometer(s), Pressure sensor
Height [mm]
24
Width [mm]
45
Length [mm]
46
Weight [gr]
47
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Magnetometers
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Num. of Magnetometers
3
Range [ ± Gauss ]
50
Bandwidth [ Hz ]
22
Non-linearity [ max % ]
0.1
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Additional specifications
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Distinguishable features
With the best Performance/price ratio, the Ellipse-E offers the ability to connect to an external GNSS receiver for a continuous fusion of inertial and position data in order to deliver a robust trajectory even during GNSS outages.
Application
Autonomous vehicle navigationPoint cloud data georeferencing
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Accuracy
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Heading dynamic accuracy [ ° ]
0.2
Pitch and Roll dynamic accuracy [ ° ]
0.05
Documents
