20170423
BGSF ramp survey
1112 data on
1112 moving
1240 still
1329 data off
usual base station, 00k3 and 3vsa with 3vyu running at low rate
3vyd is the vehicle
vehicle antenna: Ashtech 701945-01 rev E
Antenna height measurements for the vehicle:
-mag mount choke-ring antenna was placed on the roof of a Toyota pickup
-Antenna height measurements were made to the very top of the antenna housing, with the vehicle loaded as for the survey
-measured height between top of antenna housing and top of chokerings: 3.9 cm
-heights measured on hangar floor surface, smooth and relatively flat
-heights measured with "South" total station, with retro prisms/mounts on the
choke-ring antenna and on the floor adjacent to each tire; floor prism was attached to a tribrach
-prism mounted on choke-ring: offset from prism center to top of antenna
housing: 143 mm
-prism on floor: offset from prism center to floor surface: 165 mm
-pre-survey measurements: 0.563 m antenna prism height from pax side
-1.423 m floor prism, pax rear
-1.422 m floor prism, pax front
0.550 m antenna prism height from drivers side
-1.421 floor prism, drivers rear
-1.428 floor prism, drivers front
-post-survey measurements: 0.571 m antenna prism height from pax side
-1.406 m floor prism, pax rear
-1.397 m floor prism, pax front
0.568 m antenna prism height from drivers side
-1.405 m floor prism, drivers rear
-1.407 m floor prism, drivers front
-pre-survey delta-ht: 1.986/1.985 m pax/1.971/1.978 m drivers
1.980 m average all four tires
-post-survey delta-ht: 1.977/1.968 m pax/1.973/1.975 m drivers
1.973 m average all four tires
-overall average delta-ht: 1.977 m (prism to prism)
-overall delta-ht1: 1.999 m (floor to top of antenna housing)
-overall delta-ht2: 1.859 m (floor to bottom of preamp)
-overall LCPC height: 1.906 m (floor to LC phase center)