How to measure GPS signal strength on Android?

Question

Question is as simple as the title: How to measure GPS signal strength?

Answer 1

You can read signal strength in MNEA message GSV in SNR-Signal to Noise Ratio.

Signal strength is VERY important. Too weak of a signal and the receiver can't track them. You need several 'strong' satellites to get position, not just one.

Older receivers couldn't track in trees or inside buildings. Modern receivers are much more sensitive.