How come there’s GPS reception inside the Massey Tunnel near Vancouver, BC?
sentiment50 asked:
Quite surprisingly, my GPS has reception inside the Massey tunnel, which shows my exact position inside the tunnel and my progress. This is true when driving in both directions. Since the tunnel is made of concrete and is covered in 15 meters of rocks (according to Wikipedia), this is quite amazing. Is there some internal GPS repeater inside the tunnel maybe?
Quite surprisingly, my GPS has reception inside the Massey tunnel, which shows my exact position inside the tunnel and my progress. This is true when driving in both directions. Since the tunnel is made of concrete and is covered in 15 meters of rocks (according to Wikipedia), this is quite amazing. Is there some internal GPS repeater inside the tunnel maybe?
Possibly Related Posts:
- How exactly does a GPS monitor the volcano to see if it is deflating or inflating?
- How can I find a resource to know about how GPS and GIS aid haiti victims?
- What is the best hand held GPS device for a geologist?
- what are some ways that scientists use gps in our world today?