there is a sattelite network, and a terrestrial reference station infra
Yeah but how do we know there distances accurately
usually laser ranging is used to establish a baseline, rather than using a theodolite and chain like OG surveyors.
the rest is trigonometry, withe the GPSS defining points relative to the baseline.
https://www.gps.gov/trilateration
https://apps.dtic.mil/sti/html/tr/ADA165932/index.html
https://app.studyraid.com/en/read/15241/528230/determining-d...
Yeah but how do we know there distances accurately
usually laser ranging is used to establish a baseline, rather than using a theodolite and chain like OG surveyors.
the rest is trigonometry, withe the GPSS defining points relative to the baseline.
https://www.gps.gov/trilateration
https://apps.dtic.mil/sti/html/tr/ADA165932/index.html
https://app.studyraid.com/en/read/15241/528230/determining-d...