el2height

Convert target elevation angle to height

Since R2021a

Syntax

tgtht = el2height(el,anht,R)

tgtht = el2height(___,model)

tgtht = el2height(___,re)

Description

tgtht = el2height(el,anht,R) returns the target height in meters. This function assumes that heights are referenced to the ground.

tgtht = el2height(___,model) specifies the Earth model used to compute the target height. Specify model as 'Curved' or 'Flat'.

tgtht = el2height(___,re) specifies the effective Earth radius in meters as a positive scalar re.

Examples

Determine Target Height

Determine the target height in meters given an elevation angle of 0.5 degrees, a sensor height of 10 m, and a range of 300 km. Convert the range to meters.

el = 0.5;
anht = 10;
R = 300e3;

tgtht = el2height(el,anht,R)

tgtht = 
7.9325e+03

Input Arguments

el — Elevation angle

scalar | M-length vector

Elevation angle to target, specified as a scalar or M-length vector. Units are in degrees.

Data Types: double

anht — Sensor height

scalar | M-length vector

Sensor height, specified as a scalar or M-length vector. Units are in meters.

Data Types: double

R — Range

scalar | M-length vector

Range between target and sensor, specified as a scalar or M-length vector. Units are in meters.

Data Types: double

model — Earth model

'Curved' (default) | 'Flat'

Earth model used to compute target height, specified as 'Curved' or 'Flat'. By default, the el2height function assumes a curved Earth model.

re — Effective Earth radius

positive scalar

Effective Earth radius, specified as a positive scalar. By default, re is 4/3 of the Earth radius. Units are in meters. The function ignores this input when model is set to 'Flat'.

Data Types: double

Output Arguments

tgtht — Target height

scalar | M-length vector

Target height, returned as a scalar or M-length vector. Units are in meters.

References

[1] Barton, David K. Radar Equations for Modern Radar. Artech House Radar Series. Norwood, Mass: Artech House, 2013.

Extended Capabilities

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

Version History

Introduced in R2021a