rainelres

Elevation resolution of rain limited by radar resolution

Since R2021a

Syntax

elres = rainelres(r,beamw,grazang)

elres = rainelres(r,beamw,grazang,hgt)

Description

elres = rainelres(r,beamw,grazang) returns the elevation resolution of rain limited by the resolution of the radar.

elres = rainelres(r,beamw,grazang,hgt) also specifies the height extent of rain.

Examples

Elevation Resolution of Rain

Estimate the elevation resolution of rain for a side-looking airborne synthetic aperture radar (SAR) with elevation beamwidth of $9^{\circ }$ grazing at ${60}^{\circ }$ for a target range of 10 km. Assume the height extent of rain to be 3 km.

elbw = 9;
grazang = 60;

rng = 10e3;
hrain = 3000;    

Compute the rain elevation resolution.

elres = rainelres(rng,elbw,grazang,hrain)

elres = 
782.1723

Input Arguments

r — Range from target to antenna

positive real scalar | vector

Range from target to antenna in meters, specified as a positive real scalar or a vector.

Data Types: double

beamw — Elevation beamwidth

positive real scalar | vector

Elevation beamwidth in degrees, specified as a positive real scalar or a vector.

Data Types: double

grazang — Grazing angle

scalar in the range [0, 90]

Grazing angle in degrees, specified as a scalar in the range [0, 90].

Data Types: double

hgt — Height extent of rain

4000 (default) | real scalar

Height extent of rain in meters, specified as a real scalar.

Data Types: double

Output Arguments

elres — Elevation resolution of rain

matrix

Elevation resolution of rain, returned as a matrix. The rows of elres correspond to the range values in r and its columns correspond to the elevation beamwidth values in beamw.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Version History

Introduced in R2021a