Ublox F9P Survey Mode in for temporary solution

[DavideLentini]

I find the idea of this project fantastic , but perhaps far from my goal . I would like to make a mobile base and not fixed , and I would then need to start a Survey with Min accuracy and Min time , how exactly does the Survey In mode of the Ublox F9P work . Is this project able to do this ? Thank you very much

[jaerabr]

Hello, I use RTKbase as a base GNSS kit and rover with UHF radio and it works perfectly, please provide more details about your objective. https://photos.app.goo.gl/UihiRzKDiyK1R9LF8

[DavideLentini]

@jaerabr Thanks ! My goal is to use a Raspberry Pi with RTKBase software , as a mobile base , to inject rtk correction messages into my local network , I would probably use TCP method instead of Ntrip . Now from what I understand this library was developed as a FIXED system , right ? and not as a mobile . So I would need , arrived on a new place , to turn on the raspberry Pi , to which is connected via USB an Ublox F9P devkit : https://www.u-blox.com/en/product/c099-f9p-application-board And somehow define from the web interface my survey values to initialize one (min accuracy,min duration) using the ublox f9p in SVIN mode , and when the survey is completed send the correction data with a method I prefer (ntrip, tcp,...)

I was thinking , in case there is no such setting , that it would be enough to send the survey command before starting the rtkbase service , and after I acquired the coordinates from the survey enter them manually (or automatically) into the service and then launch the ntrip/tcp server

[DavideLentini]

I make an update here to explain how I solved , hoping that I can be of help to other people . I understand that the idea of this repository is that of a software designed for a fixed station , and therefore I think it will be quite complicated that in the future there will be a possibility of a survey system addition in . So I thought that very simply the survey in phase, must be done BEFORE starting the rtkbase services . Since I also work with a raspberry + ubuntu server+ ublox f9p , there is no GUI or even a command line interface to configure the survey . So I devised a small script in python that initially stops rtkbase services afterwards sends the configuration parameters to start the survey , and does a RESET of the F9P to start it . It is possible to follow the progress of the survey either with a led (using GPIO of the raspberry) or from the terminal , simply by going to read the UBX-NAV-SVIN packets . Once the survey is finished , the python script will start the rtkbase services , passing access to the f9p's serial . At this point from web interface , you can see the quality of the satellites , and start the various ntrip services. Since the f9p has finished the survey and is in TIME mode , it will send RTCM messages by itself .

Although it goes against the main idea of this repo , I did not use the automatic gnss configuration , because it gave me problems .