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???
01/17/08 11:00
Modified:
  01/17/08 11:05
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 		 #149632 - Much better
Responding to: ???'s previous message
Thanks Cooper, Its OK to convert NEMA data to degrees and decimal degrees before actual convertion also minute data is useless. Can you please explain me why Adjust east-west distance for latitude is required .
Also is the formula equally well
d = acos(sin(Lat1) × sin(Lat2) + cos(Lat1) × cos(Lat2) × cos(Lon1 – Lon2))

where d= distance and result is in radians.



Best/
AP


List of 32 messages in thread
TopicAuthorDate
Global positioning algorithm            01/01/70 00:00      
   Global?            01/01/70 00:00      
   Ehm what do you receive?            01/01/70 00:00      
      coordinates            01/01/70 00:00      
         Length/absolute value of a vector ?            01/01/70 00:00      
         How do they know?            01/01/70 00:00      
         An old greek...            01/01/70 00:00      
            What about doppler            01/01/70 00:00      
               not doppler & math            01/01/70 00:00      
                  Haversine formula is it accurate for short distanc            01/01/70 00:00      
               Are you thinking of D-VOR            01/01/70 00:00      
            An old greek... not accurate enough for            01/01/70 00:00      
               Well, you're stating that it's a 2D space.            01/01/70 00:00      
                  Well, you're stating that it's a 2D space.            01/01/70 00:00      
                     So how wide are your roads?!            01/01/70 00:00      
               You said approximate            01/01/70 00:00      
               Some questions            01/01/70 00:00      
                  Answers to Cooper            01/01/70 00:00      
                     Plane should be fine, then            01/01/70 00:00      
                        Plane should be fine, then            01/01/70 00:00      
                           If you have cartesian coordinates ...            01/01/70 00:00      
                           complex math trough LUT            01/01/70 00:00      
                              Fixed point            01/01/70 00:00      
                                 Scaling            01/01/70 00:00      
                     You have wide roads, then!            01/01/70 00:00      
                        That's still wide!            01/01/70 00:00      
                     Much better            01/01/70 00:00      
                         Much better            01/01/70 00:00      
                           Adjusting for latitude            01/01/70 00:00      
                              Thanks            01/01/70 00:00      
                  Not entirely true            01/01/70 00:00      
                     You\'re right            01/01/70 00:00      

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