EL-N-1

Single GNSS/INS navigation system
EL-N-1
Single-antenna INS/GNSS navigation unit for real-time PVA output, where heading is aided by GNSS course-over-ground during motion and DMC.
EL-N-1 is a compact MEMS INS/GNSS navigation system based on a 3-axis IMU, GNSS receiver, DMC (digital magnetic compass) and sensor fusion firmware.
EL-N-1 single GNSS/INS navigation system
GNSS
Multi-constellation GNSS support with 1 PPS timing synchronization
RTK
Support for improved positioning accuracy
Data
Real-time position, velocity, attitude and status flags output
Embedded
Sensor fusion algorithm, adaptable to different platforms

Installation / Integration

EL-N-1 is intended to be integrated as a navigation unit into the host platform. The embedded sensor-fusion firmware processes IMU and GNSS data and outputs real-time PVA data to the host controller. When connected to the CDV software application, real-time data visualization and logging are also available.

Installation

  • Rigid mounting to the host structure
  • User defined orientation relative to the host frame
  • External GNSS antenna connection
  • Power / data cable connection with the host platform

Host integration

  • Device configuration using CDV software app
  • Data logging for post-test analysis
  • RTK correction input from the host
  • Integration support through data protocol and example parsing code (C, Python)

Navigation outputs

The CDV software app allows the user to select output content and output data rate. Data is sent to the host platform using proprietary binary protocol.

Data types

  • Attitude: Euler angles, quaternions, DCM
  • Latitude, longitude and altitude
  • Body frame velocity
  • Bias compensated acceleration and angular rate data
  • GNSS position, velocity and timing data

Diagnostic and status data

  • GNSS fix type and RTK status
  • GNSS signal quality indicators
  • Navigation status flags
  • Timestamped output for logging

Mechanical dimensions

EL-N-1 mechanical dimensions drawing

Specifications

Attitude accuracy - static 0.05–0.1° (RMS)1
Attitude accuracy - dynamic 0.3–0.5° (RMS)2
GNSS (COG) heading accuracy < 1° (RMS)3
DMC heading accuracy 2° (RMS)4
Position accuracy - GNSS 1.5 m CEP horizontal / 2.0 m vertical5
Velocity accuracy 0.05 m/s
Output data rate User defined, up to 200 Hz
Serial baud rate Up to 921600 bps
Gyroscope bias stability 8 deg/h
Gyroscope dynamic range ± 2000 °/s
Gyroscope ARW 0.34 °/√hr
Accelerometer range 40 g
IMU data output rate 2 kHz
Supported constellations GPS, GLONASS, Galileo, BeiDou
RTK correction Supported, data provided by the host platform
Communication interface USB, RS232, digital inputs (2x), digital output
Main connector Harwin G125-FV11605L0R
Supply voltage 5 - 36 V
Enclosure Anodized Al enclosure
Dimensions 76.2 x 33 x 41.5 (mm) - L x W x H
Mass 94 g
Operating temperature −40°C to +85°C

Specifications may be updated without prior notice.

1 Valid under stationary or low-dynamic conditions, with proper mounting and low vibration.

2 Valid under good GNSS reception, proper mounting, moderate vibration, and platform dynamics within the defined operating range.

3 Valid when speed >3 m/s, GNSS fix and low multipath.

4 Valid with hard and soft iron compensation and suitable magnetic environment. Output is referenced to geographic north, by use of embedded WMM model.

5 Standalone GNSS accuracy, dependent on satellite visibility, proper antenna installation and low multipath.

For more information, contact: info@eloptris.rs