Detecting GNSS Jamming and Spoofing on Android Devices

[draekko]

Is your feature request related to a problem? Please describe.
Not related to a problem yet

Describe the solution you'd like
it would be nice Gpstest implemented a jamming or spoofing attack visual signal to know when either situation arises as per the research paper description below.

Additional context
Articles/Papers

"Detecting GNSS Jamming and Spoofing on Android Devices"
DOI: https://doi.org/10.33012/navi.537
https://navi.ion.org/content/69/3/navi.537

"Improving GNSS Spoofing Awareness in
Smartphones via Statistical Processing
of Raw Measurements"
DOI: 10.1109/OJCOMS.2023.3260905
https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=10081330

[barbeau]

Thanks @draekko, this is definitely something I'm interested in, but just haven't had the time to tackle. I already have #231 open for this feature, so I've copied your references to that issue. Any more references you find are welcome!