Goto Section: 24.52 | 24.55 | Table of Contents
FCC 24.53
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 24.53 Calculation of height above average terrain (HAAT).
(a) HAAT is determined by subtracting average terrain elevation from antenna
height above mean sea level.
(b) Average terrain elevation shall be calculated using elevation data from
a 30 arc second or better Digital Elevation Models (DEMs). DEM data is
available from United States Geological Survey (USGS). The data file shall
be identified. If 30 arc second data is used, the elevation data must be
processed for intermediate points using interpolation techniques; otherwise,
the nearest point may be used. If DEM data is not available, elevation data
from the Defense Mapping Agency's Digital Chart of the World (DCW) may be
used.
(c) Radial average terrain elevation is calculated as the average of the
elevation along a straight line path from 3 to 16 kilometers extending
radially from the antenna site. At least 50 evenly spaced data points for
each radial shall be used in the computation.
(d) Average terrain elevation is the average of the eight radial average
terrain elevations (for the eight cardinal radials).
(e) The position location of the antenna site shall be determined to an
accuracy of no less than ±5 meters in both the horizontal (latitude and
longitude) and vertical (ground elevation) dimensions with respect to the
National Geodetic Reference System.
[ 58 FR 59183 , Nov. 8, 1993; 59 FR 15269 , Mar. 31, 1994]
return arrow Back to Top
Goto Section: 24.52 | 24.55
Goto Year: 2014 |
2016
CiteFind - See documents on FCC website that
cite this rule
Want to support this service?
Thanks!
Report errors in
this rule. Since these rules are converted to HTML by machine, it's possible errors have been made. Please
help us improve these rules by clicking the Report FCC Rule Errors link to report an error.
hallikainen.com
Helping make public information public