GPS base station fishy output

GPS/GNSS Development Boards
1

Hey, I’m having issues with the performance of my f9p base and rover pair, fixing and holding are from what I can tell performing somewhat poorly and many cycle slips, etc. seem to occur. I know the f9p has a built-in RTK solution but that’s another issue I’m having for another time. I noticed in the data of my base station that it seemed to give somewhat erratic and weird-looking output:

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as opposed to when I download a dataset online and it looks more smooth and evenly distributed:

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I also checked with multiple other previous data instances of me using that receiver as a base and the pattern seems to be reoccurring and the elongated-ness seems to appear in most plots and even point in the same direction coordinate-wise.

Am I seeing the source of my issues here? or is this an expected behavior? if not what could be the causing problem? for context, I am using an U.fl. adapter to a good antenna and sadly it unlatches if not handled carefully sometimes. this has happened at most maybe a dozen times.

I appreciate the help! Thanks

2

Between two buildings, or vertical obstructions, or reflective surfaces? Low to the ground?

You really want the base antenna in a place that breaks the roof lines, and can see horizon-to-horizon above about 10 degrees. In the Northern Hemisphere the Northern Sky has the least satellite paths, as they don’t cross the poles.

Have a ground plane under things like the ANN-MB, design expectation is for at least a 10cm diameter one.

Provide some strain relief to the uFL, loop and zip-tie the cable to one of the fiducial holes, otherwise you’ll shear off the connector, the connectors also aren’t designed for multiple insertion/removal cycles.