How to use GPS as primary source of data in RTAB-MAP ?

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How to use GPS as primary source of data in RTAB-MAP ?

mrrabbit
Hi Matlabbe,
I am working on navigating and SLAM for a mobile robot using GPS as localization method. But the problem is, it is failing at some cases due to signal loss at some point in the environment. So I am looking for a SLAM method that does use the GPS as primary source and switched to other slam methods when the GPS goes out of signal and comes back to GPS when the GPS comes back alive. Have any of you guys got any idea about any slam technologies doing this. I tried using RTAB-MAP, but the problem is it uses a combination of all sensors available to it, it does not give priority to GPS as needed. It fuses all these sensor data. Is there anyway to do this.

Thanks for your time.