[HN Gopher] How do satellites communicate with a GPS system? (2018)
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       How do satellites communicate with a GPS system? (2018)
        
       Author : reqo
       Score  : 37 points
       Date   : 2024-04-28 15:34 UTC (1 days ago)
        
 (HTM) web link (www.allaboutcircuits.com)
 (TXT) w3m dump (www.allaboutcircuits.com)
        
       | plq wrote:
       | The title actually means "How do GPS receivers receive signals
       | from the GPS satellites?" It's not about other satellites
       | communicating with GPS satellites.
       | 
       | TL;DR: They use special-purpose antennas.
        
       | bagels wrote:
       | The title is very confusing.
       | 
       | Satellites don't generally communicate 'with' a GPS system.
       | 
       | I think they meant, "How do GPS satellites communicate with the
       | GPS system?"
        
       | ck2 wrote:
       | Makes you wonder if there is encryption on the uplinks for the
       | first batch and how quickly they will be hacked.
       | 
       | Remember how they didn't have encryption for years on the UAVs
       | during the Iraq War and Afghanistan?
       | 
       | https://www.wired.com/2012/10/hack-proof-drone/
        
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       (page generated 2024-04-29 23:00 UTC)