How Does RTK Allow GPS To Be Centimeter Level Accurate?

[Music] [Music] so rtk stands for real-time kinematic what it means is it's taking a correction service from a surveyed gps base station applying that correction to the the rover or the moving gps system it's able to correct for atmospheric distortions and errors in the in the existing gps system which is what brings it down from meter level accuracy to centimeter level accuracy and positioning because the gps system is triangulating itself off of these gps signals from moving satellites in in free space the satellite signal is traveling through great distances of atmosphere and those distances of atmosphere affect the the speed at which the signal arrives at the gps receiver the position estimate is is critical to the timing of those signals but because the atmosphere changes and the time of arrival changes on on each of those signals based on weather conditions time of day there's there's a lot of factors then the actual position estimate will vary there's error as a result it's kind of like having a a fuzzy tape measure where your your mark isn't isn't very clear and it's just simply you can't read it there's also air in the in the gps signals themselves so what rtk does is it takes a correction from a surveyed known location that is in relatively close proximity to the to the rover which can be up to 20 miles and it applies that correction to account for these atmospheric distortions and errors [Music] foreign

Channel: Inertial Sense, Inc.

Views: 6,836

Keywords: gpsrtk, dual ins, gps antenna, tom bennett, inertial sense, autonomous navigation, autonomous robotics, robot operating system, robot localization, gnss, what is gnss, gnss antenna, gnss vs gps, gnss receiver, gnss systems, dual gps, imu, imu sensor, drone imu, what is an imu, uins, inertial, ins sensor, inertial sensor, ins system, ins robotics, inertial navigation system, ins navigation, inertial measurement unit, rtk, lidar, vslam, rtk explained, how gps works, use of gps

Id: bsbj0tsYJ9Y

Length: 2min 9sec (129 seconds)

Published: Fri May 07 2021