Good day Iain What I found and what has led to the question is that doing tests with short "baselines" below 5 meters and using a combination of Kinematic and Moving Base RTK algorithms is that if Z is shorter or longer that X the system will calculate the "baseline" as X. However when Z and X is equal the system all of a sudden calculates the "baseline" as the hypotenuse. The first image is a screen shot of the results obtained from the first rig where the horizontal distance between the antennas was 820 mm the 3rd image is a newer rig with antennas deployed at various distances from the Base. I unfortunately do not have screen shots of that data set. The units all resolved the triangles perfectly with the "baseline" the horizontal distance value. The last image is the rig I am presently testing with where the "baseline" now has become the hypotenuse.
The unit also when it settles down displays the correct measurement as is the first model I built where it would indicate 820 mm between antenna centers. The screen grab indicates 819 mm and the unit will jump a millimeter positive or negative until it settles where it appears to be "frozen" but responds immediately should you move the antenna. I do not have access to the latest test equipment etc but what we have established with this unit is that it is very precise hence the time issue. I have been to a number of professors at the local universities but have not been able to find anyone that can assist me in taking this forward Thank you for your interest Sincerely Anton [image: pitchyawfix] <https://surveyorconnect.com/wp-content/uploads/wpforo/attachments/12846/11243-pitchyawfix.JPG> [image: ToetsGps] <https://surveyorconnect.com/wp-content/uploads/wpforo/attachments/12846/11244-ToetsGps.jpg> [image: antenna] <https://surveyorconnect.com/wp-content/uploads/wpforo/attachments/12846/11245-antenna.jpg> [image: newrig] <https://surveyorconnect.com/wp-content/uploads/wpforo/attachments/12846/11246-newrig.jpg> On Sun, Apr 25, 2021 at 12:44 AM Iain <[email protected]> wrote: > The angles have nothing to do with how the rtk will setup a baseline. It > will calculate the difference in location from one point to another. The > data collector will calculate the points and no knowledge of any angles > unless you are using a total station > > > On Apr 24, 2021, at 06:34, Anton Strydom <[email protected]> wrote: > > > > Good day to all > > > > If I have a setup as per the sketch where A is either a Base or Rover > with > > B also being either a Base or Rover depending on A. ie if A is a Base > the B > > will be a Rover. X equals Z and the angle is 90 degrees. > > > > When doing RTK what would the Baseline be as established by the two GPS > > units? > > > > Sincerely > > Anton > > [image: image.jpeg] > > _______________________________________________ > > time-nuts mailing list -- [email protected] -- To unsubscribe > send an email to [email protected] > > To unsubscribe, go to and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send > an email to [email protected] > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
