Inertial Navigation Systems, INS/GPS, AHRS, and IMU Sensors for Unmanned Systems

GNSS-Aided INS Integrated into Autonomous Tractor

By Mike Ball / 05 Oct 2020
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Unmanned tractor with SBG Systems GNSS-INSSBG Systems’ Ellipse2-D dual-antenna GNSS-aided INS (Inertial Navigation System) has been integrated into a self-driving tractor developed by South Korean company Unmanned Solution. The company specializes in autonomous vehicles and is a pioneer in the modernization of agricultural equipment in South Korea, having developed an auto-guidance system and a self-driving algorithm suitable for the Korean agricultural market and environment.

The auto-guidance system is made up of a GPS/GNSS module that provides high-precision positioning, an auto-steering module, and a control console that allows users to set parameters and define paths for the vehicle to follow. It provides and controls position, attitude and speed data, allowing the tractor to follow its programmed path.

SBG Systems’ Ellipse2-D INS is integrated into the system’s GPS/GNSS module, delivering positioning, roll/pitch and heading data and allowing the system to monitor the tractor and adjust course if needed. The Ellipse2-D sensor is a dual-antenna RTK GNSS/INS that is ideal for platforms such as this tractor that are slow-moving, and thus require a highly precise heading because of the low dynamics. A dual-antenna inertial system delivers more accurate heading than a single antenna solution, even in a stationary position, and is therefore recommended for autonomous vehicles with low dynamics.

Unmanned Solution is also currently developing a driverless autonomous pesticide applicator. The company’s current portfolio includes a number of autonomous solutions not limited to agricultural applications, all of which are equipped with either an SBG Systems Ellipse or Ekinox RTK GNSS/INS, depending on the application’s performance and accuracy needs. These autonomous systems include:

WITH:US autonomous shuttle – operates as an on-demand public transportation service in smart cities, using Velodyne LiDARs, SBG Systems RTK INS/GNSS, several cameras, and controllers, enabling the shuttle to analyze its surroundings and determine the best course of action. The shuttle is used for short-distance trips such as campuses, industrial, airport, and downtown areas.
WITH:US LOGI autonomous logistics robot – used for indoor and outdoor short-distance deliveries. In addition to being able to access areas that regular vehicles cannot reach, it also allows customers to choose their preferred date, time and location for delivery.
WITH:US CARO – designed for long-distance and large deliveries, with a large loading space and a carrying capacity of up to 1,500kg.
WITH:US SECURITY robot – a self-driving security robot capable of travelling short distances in a range of environments. It integrates an obstacle recognition technology for outdoors applications, and can serve as a patrolling robot.

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Posted by Mike Ball Mike Ball is our resident technical editor here at Unmanned Systems Technology. Combining his passion for teaching, advanced engineering and all things unmanned, Mike keeps a watchful eye over everything related to the unmanned technical sector. With over 10 years’ experience in the unmanned field and a degree in engineering, Mike’s been heading up our technical team here for the last 8 years. Connect & Contact