[morcheeba]

That's essentially what he's doing. The patch antenna he's using have a null at the horizon, where ground-based jammers would be.

[denton-scratch]

OK, thanks. That info wasn't in TFA, nor in the article it linked to.

[yencabulator]

It is in the linked-to article, including discussion about lobes, polarization, more directional replacement antennas, and comparative measurements while being jammed.

https://olegkutkov.me/2023/11/07/connecting-external-gps-ant...