beam_range {bioRad} | R Documentation |
Calculates the range (i.e. slant range) given a distance measured along the earth's surface (i.e. down range) and beam elevation.
beam_range(distance, elev, k = 4/3, lat = 35, re = 6378, rp = 6357)
distance |
numeric. Distance from the radar as measured along sea level (down range) in m. |
elev |
numeric. Beam elevation in degrees. |
k |
Standard refraction coefficient. |
lat |
Geodetic latitude of the radar in degrees. |
re |
Earth equatorial radius in km. |
rp |
Earth polar radius in km. |
depends on beam_height to calculate beam height.
numeric. Beam range (slant range) in m.
# slant range of the 5 degree elevation beam at a down range of 100 km: beam_range(100000, 5)