As illustrated in the image above, the robotic lawnmower operates according to plan as long as the distance between the reported position and the exclusion area exceeds the protection level. When the protection level increases to the point that it extends into the exclusion area, or if no valid protection level value is available, service is interrupted. In this case, the lawnmower can, for example, retrace its steps back to the most recent trusted position.
Ultimately, GPS protection level increases quality of service by letting the lawnmower get closer to exclusion area while minimizing the risk of entering it.
Other applications that benefit from GPS protection level
Robotic lawnmowers are by no means the only application to benefit from GPS protection level. Basically, any application that relies on GPS-based positioning information can benefit from a highly reliable upper bound on the position error. Next, we briefly look at four other use cases.
In-vehicle navigation and driver assistance systems
In-vehicle navigation and driver assistance systems can offer improved user experience by eliminating misleading information from the GNSS receiver.
Driving instructions and alerts can, for example, be issued only when the protection level is below a predefined threshold referred to as the alert limit. This can also help prevent repeating alerts caused by challenging GNSS signal environments.
Drone based surveying
Drone based surveying depends on accurate GNSS data to correctly geotag photographs and make accurate measurements. When the protection level exceeds a predefined alert limit, the drone’s control software can flag inaccurately geotagged images or return to the same location to make new measurements once the protection level has returned to an acceptable value.
GPS protection level can also increase reliability by ensuring that autonomous drones only land when its value is below a predefined alert limit.
e-scooters or shared bikes are increasingly required to comply with municipal regulations such as no-ride zones. To enforce these regulations, e-scooters might, for example, slow down to a halt when riders enter restricted geo-fenced areas.
When the protection level exceeds a predetermined alert limit, alerts can be temporarily interrupted to avoid erroneously stopping users that are complying with regulations.
Fleet management solutions
Fleet operators, too, can benefit from GPS protection level to increase the quality of service, for example, by making it easier to locate parked vehicles.
Telematics systems in parked vehicles could, for instance, be instructed to only report their position if the GPS protection level is below a specific threshold.
Get started with GPS protection level today!
GPS protection level is now available on the ZED-F9P-04B high precision GNSS module. Designed for seamless integration with the NEO-D9C and NEO-D9S GNSS correction service receivers, the module offers customers unprecedented flexibility in assembling cost-effective, scalable solutions for robotic lawnmowers, unmanned autonomous vehicles (UAV), and semi-automated or fully automated machinery.
Head over to u-blox.com to learn more about protection level, the upgraded ZED-F9P high precision GNSS receiver, our new GNSS correction service receivers, and more.