beam_range {bioRad}

Calculate radar beam range

Description

Calculates the range (i.e. slant range) given a distance measured along the earth's surface (i.e. down range) and beam elevation.

Usage

beam_range(distance, elev, k = 4/3, lat = 35, re = 6378, rp = 6357)

Arguments

distance

Numeric. Distance from the radar as measured along sea level (down range), in m.

elev

Numeric. Beam elevation, in degrees.

k

Numeric. Standard refraction coefficient.

lat

Numeric. Geodetic latitude of the radar, in degrees.

re

Numeric. Earth equatorial radius, in km.

rp

Numeric. Earth polar radius, in km.

Details

depends on beam_height to calculate beam height.

Value

Beam range (slant range), in m.

See Also

Other beam_functions: beam_distance(), beam_height(), beam_profile(), beam_profile_overlap(), beam_width(), gaussian_beam_profile()

Examples

# Slant range of the 5 degree elevation beam at a down range of 100 km
beam_range(100000, 5)