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Question: Would using GPS antenna that only points at the sky (vs more omni-directional ones that mobile devices must have to work in any position) would "fix"
by adql 3y ago
Question: Would using GPS antenna that only points at the sky (vs more omni-directional ones that mobile devices must have to work in any position) would "fix" the jamming problem ?
- morcheeba 3y agoThat'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 3y agoOK, thanks. That info wasn't in TFA, nor in the article it linked to.
- yencabulator 3y agoIt 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-antenna-to-the-starlink-terminal/ https://olegkutkov.me/2023/11/07/connecting-external-gps-ant...
- ceejayoz 3y agoI can't find it in a quick Google, but I read an article a while back talking about them putting the receivers in foxholes; can see the sky just fine, but any ground-based jammers nearby have to push through the dirt.
- sandworm101 3y ago>> GPS antenna that only points at the sky On paper. In reality, most every antenna has "side lobes" through which jamming signals can spoil the actual signal. In some cases the more directional an antenna becomes, the more significant are the side lobes.
- jandrese 3y agoRemember that GPS satellites may be near the horizon relative to you. That said there are enough of them in orbit that you can usually get away with only using the ones that are more overhead.
- deleted 3y ago[deleted]