[Goose]

https://www.yahoo.com/news/why-isn-t-rus...00516.html Some conjectures on why Russia has not been jamming GPS extensively. The Ukrainians will certainly be using GPS for their Excalibur 155 mm rounds and their GMLRS rounds. These both have INS as a primary guidance system but GPS correction is valuable when available. The references in the article to GPS spoofing are accurate, but "military grade" GPS is resistant to many (not all) of the things that will fool your cell phone. The article presents some ideas, but it is still a bit of a mystery why Russia has done so little GPS jamming.

[Goose]

https://www.yahoo.com/news/why-isn-t-rus...00516.html Some conjectures on why Russia has not been jamming GPS extensively. The Ukrainians will certainly be using GPS for their Excalibur 155 mm rounds and their GMLRS rounds. These both have INS as a primary guidance system but GPS correction is valuable when available. The references in the article to GPS spoofing are accurate, but "military grade" GPS is resistant to many (not all) of the things that will fool your cell phone. The article presents some ideas, but it is still a bit of a mystery why Russia has done so little GPS jamming.