20180227
KWAL ramp survey
1531 vehicle data on
1531 moving
1637 still
1738 data off
usual base station, 00k3 and 3vsa with 3vyu running at low rate
0rzp and 3vt2 are in the vehicle
vehicle antenna: Thales 701945-02 rev E
Antenna height measurements for the vehicle:
-mag mount choke-ring antenna was placed on the roof of a small sedan
-Antenna height measurements were made to the very top of the hemispherical 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 N-159 ramp surface, smooth and relatively flat
-heights measured with "Northwest" total station, with retro prisms/mounts on the choke-ring antenna, on the surface adjacent to each tire, and at each point we measured with the level and stick method
-prism mounted on choke-ring: offset from prism center to top of antenna housing: 139 mm
-prism on floor: offset from prism center to floor surface: 119 mm
Total station method:
-pre-survey measurements: 0.050 m antenna prism height from pax side
-1.568 m floor prism, pax rear tire
-1.576 m floor prism, pax front tire
-1.566 m stick rear pax
-1.565 m stick middle pax
-1.564 m stick front pax
0.068 m antenna prism height from drivers side
-1.552 m floor prism, drivers rear
-1.564 m floor prism, drivers front
-1.553 m stick rear driver
-1.549 m stick middle driver
-1.550 m stick front driver
-post-survey measurements: -0.006 m antenna prism height from pax side
-1.621 m floor prism, pax rear
-1.598 m floor prism, pax front
-1.618 m stick rear pax
-1.609 m stick middle pax
-1.605 m stick front pax
0.117 m antenna prism height from drivers side
-1.528 m floor prism, drivers rear
-1.490 m floor prism, drivers front
-1.524 m stick rear driver
-1.519 m stick middle driver
-1.514 m stick front driver
-pre-survey delta-ht: 1.618/1.626/1.616/1.615/1.614 m pax (prism to prism)
1.620/1.632/1.621/1.617/1.618 m drivers (prism to prism)
1.620 m average all sites (prism to prism)
-post-survey delta-ht: 1.615/1.592/1.612/1.603/1.599 m pax (prism to prism)
1.645/1.607/1.641/1.636/1.631 m drivers (prism to prism)
-overall average delta-ht: 1.6189 m (prism to prism)
-overall delta-ht1: 1.5989 m (surface to top of antenna housing)
-overall delta-ht1: 1.4591 m (surface to bottom of preamp)
-overall LCPC height: 1.5055 m (surface to LC phase center)
Level-and-stick method:
-pre-survey measurements: 159.6 cm pax rear
159.6 cm pax middle
159.4 cm pax front
160.0 cm driver rear
159.5 cm driver middle
159.4 cm driver front
-post-survey measurements: 159.4 cm pax rear
158.6 cm pax middle
158.3 cm pax front
162.2 cm driver rear
161.7 cm driver middle
161.2 cm driver front
-average pre-survey height: 159.58 cm (surface to top of antenna housing)
-average post-survey height: 160.23 cm (surface to top of antenna housing)
-overall average height: 159.91 cm (surface to top of antenna housing)
-overall average height to bottom of preamp: 145.93 cm
-overall average height to LC phase center: 150.57 cm