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Aerospace

Gyro Inertial Navigation

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The application of gyroscope inertial navigation in global navigation satellite systems (GNSS) is significant. Gyroscope inertial navigation systems (INS) complement GNSS by providing accurate position, velocity, and orientation data, especially in environments where satellite signals may be weak or obstructed, such as urban canyons or tunnels. INS uses gyroscopes and accelerometers to track the movement of an object over time, allowing for continuous navigation even when GNSS signals are unavailable. This integration enhances the overall reliability and accuracy of navigation systems, making them suitable for various applications, including aviation, maritime, and autonomous vehicles. In summary, gyroscope inertial navigation plays a crucial role in improving the robustness and precision of GNSS navigation, particularly in challenging environments.

Release time:

2021-09-03 11:39

Inertial navigation using gyroscopes is an autonomous navigation system that does not rely on external information or radiate energy externally, but the term itself is not related to GNSS (Global Navigation Satellite System) navigation.

　 Gyro Inertial NavigationIt is an autonomous navigation system that does not rely on external information and does not radiate energy to the outside world. It mainly consists of gyroscopes and accelerometers.

1. What is Gyro Inertial Navigation

　　Gyro Inertial NavigationIt is an autonomous navigation system that does not rely on external information or radiate energy to the outside, but the term itself is not related to GNSS (Global Navigation Satellite System) navigation.

1. Gyro inertial navigation has the characteristic of stable orientation in one direction, independent of external motion. When this device is installed on an object that rotates in direction, it can measure the rotation angle of the object.

2. The accelerometer can measure the acceleration value of the object's motion, and the distance can be calculated using S=(1/2)a * t ^ 2. As for the acceleration value, it is constantly changing. Then score.

The three-axis gyroscope points to the xyz axes on the coordinate axes, and the accelerometers are added on these three axes to form an inertial navigation device. By changing the three-axis angles and accumulating the three-axis distances, the three-axis position movement of the object in three-dimensional space can be measured, that is, three-dimensional spatial displacement, but you will find that such a device can only measure relative displacement, that is, the displacement between two times in the time record.

2.Gyro Inertial NavigationAnd Global Navigation Satellite System Navigation

GNSS navigation is a system that guides users based on the location information provided by GPS/BD and the pre-planned route.

We know that GPS/BD calculates its own position by receiving signals sent by satellites. When the satellite is obstructed, the positioning device cannot locate. Obstruction can occur in various situations, such as passing under an overpass or through a tunnel. At this time, the vehicle icon in the navigation may not move until the vehicle reaches an open area, at which point it will see the position jump.

In addition, based on the relationship between speed, time, and distance, the speed calculated from a satellite signal can infer a possible position to continue navigation. However, if the vehicle's acceleration and deceleration changes greatly, the estimated position will deviate significantly from the current actual position, which will bring a poor experience to the user.

　　Gyro Inertial NavigationThe application combined with GNSS not only solves the problem of GNSS devices losing navigation position when satellites are lost but also addresses the issue of relative displacement existing only in gyro inertial navigation. When the positioning accuracy of GNSS devices decreases, navigation position compensation calculations are performed using inertial navigation devices; when the accuracy of gyro inertial navigation decreases, position compensation and calculations are performed using GNSS devices.

In the field of navigation, the combination of GNSS and inertial navigation can effectively solve positioning and driving problems in obstructed environments such as tunnels, high buildings, bridges, or forests. However, due to the inherent technical shortcomings of gyro inertial navigation (time and temperature are the main factors affecting the error of inertial navigation systems, and accumulated errors are prone to expansion), long-term navigation remains very difficult. Today, the Global Navigation Satellite System has become a positioning technology in many application fields, and the technological advancements in the geospatial industry over the past 30 years have been impressive.



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The application of Global Positioning System (GPS) combined with gyroscope inertial navigation is significant in various fields. This integration enhances navigation accuracy and reliability by providing continuous position and orientation data. 1. **Aerospace**: In aviation, the combination allows for precise navigation and control of aircraft, especially in areas where GPS signals may be weak or unavailable. 2. **Maritime**: Ships utilize this technology for accurate positioning and to improve safety during navigation, particularly in challenging environments like open seas or near coastlines. 3. **Automotive**: In vehicles, this system aids in advanced driver-assistance systems (ADAS) and autonomous driving by providing real-time location and movement data. 4. **Mobile Devices**: Smartphones and tablets use this combination for location-based services, enhancing user experience in applications like maps and navigation. 5. **Robotics**: Robots rely on this technology for navigation and movement in various environments, ensuring they can operate effectively and safely. 6. **Surveying and Mapping**: Professionals in these fields use GPS and inertial navigation for high-precision measurements and to create accurate maps. Overall, the integration of GPS with gyroscope inertial navigation systems significantly improves the performance and reliability of navigation solutions across multiple industries.

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Previous Page

The application of Global Positioning System (GPS) combined with gyroscope inertial navigation is significant in various fields. This integration enhances navigation accuracy and reliability by providing continuous position and orientation data. 1. **Aerospace**: In aviation, the combination allows for precise navigation and control of aircraft, especially in areas where GPS signals may be weak or unavailable. 2. **Maritime**: Ships utilize this technology for accurate positioning and to improve safety during navigation, particularly in challenging environments like open seas or near coastlines. 3. **Automotive**: In vehicles, this system aids in advanced driver-assistance systems (ADAS) and autonomous driving by providing real-time location and movement data. 4. **Mobile Devices**: Smartphones and tablets use this combination for location-based services, enhancing user experience in applications like maps and navigation. 5. **Robotics**: Robots rely on this technology for navigation and movement in various environments, ensuring they can operate effectively and safely. 6. **Surveying and Mapping**: Professionals in these fields use GPS and inertial navigation for high-precision measurements and to create accurate maps. Overall, the integration of GPS with gyroscope inertial navigation systems significantly improves the performance and reliability of navigation solutions across multiple industries.

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A vacuum brazing furnace that can improve the cooling efficiency of products.