A survey system and method for determining {HEAD ~ the best source} of position data for {TAIL ~ a particular application} 
A survey system and method for determining { HEAD ~ the best source } of position data for { TAIL ~ a particular application }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL