What is an Inertial Navigation System (INS)?

An Inertial Navigation System (INS) is an autonomous navigation technology that uses inertial sensors, reference directions, and initial position data to calculate the position, direction, and speed of moving objects in space without relying on external signals.

INS vs. Embedded GPS Inertial Navigation System (EGI)

An Embedded GPS Inertial Navigation System (EGI) integrates INS and GPS tightly, avoiding the need for an external safety bus between the systems. This deep coupling ensures GPS data is not disturbed by interference signals, combining the strengths of both systems seamlessly.

INS vs. GPS

• INS relies on accelerometers and gyroscopes to autonomously determine position without external signals, offering high accuracy and resistance to interference.
• GPS uses satellite signals for real-time global positioning and offers wide applications with simple, efficient operation.

How Accurate is Inertial Navigation?

GPS typical accuracy reaches about 10 meters, while INS can achieve centimeter-level precision. When combined with GPS, INS compensates for hardware limitations, delivering highly accurate navigation.

INS and GPS Integration

The INS/GPS integrated navigation system fuses both technologies using Kalman filter algorithms, leveraging GPS data when available and INS when GPS signals are lost, such as in tunnels or urban canyons. This improves system reliability, stability, and accuracy.

Enhancing Navigation with GPS/INS Combination

• Anti-interference: INS takes over when GPS signals are weak or blocked.
• Improved accuracy: GPS corrects INS drift errors, while INS provides high-frequency data aiding GPS signal reacquisition.

INS GPS Tracker: JimiIoT JM-VG01U

Urban environments with tall buildings and tunnels can disrupt GPS signals, creating “urban canyons.” The JimiIoT JM-VG01U GPS and INS tracker overcomes these challenges by combining inertial navigation with multi-constellation GNSS (GPS, GLONASS, Galileo, Beidou). This device provides:

• Real-time, high-precision vehicle positioning in complex environments.
• Speed and attitude information even when GNSS signals are weak or lost.
• Faster initial positioning and greater satellite visibility than single GPS systems.

The Future of Inertial Navigation

Though INS can accumulate errors over time, advances in multi-source data fusion and intelligent correction using map data are addressing these issues. INS positioning is poised to become a core technology for future positioning solutions.

For more information about the JimiIoT JM-VG01U inertial navigation GPS tracker, please contact us.

Contact:
Email: info@jimiiot.com
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