sarmaxswath

Upper bound on swath length for SAR

Syntax

swlenc = sarmaxswath(v,azres,grazang)

swlenc = sarmaxswath(v,azres,grazang,dcang)

Description

swlenc = sarmaxswath(v,azres,grazang) computes the upper bound on swath length based on SAR constraints.

swlenc = sarmaxswath(v,azres,grazang,dcang) specifies the Doppler cone angle that identifies the direction towards the scene relative to the direction of motion of the array.

Examples

Swath Length Constraint

Estimate the constraint on swath length for a side-looking airborne SAR operating in broadside with a sensor velocity of 100 m/s. The radar has a cross-range resolution of 1.5 m and a nominal grazing angle of ${30}^{\circ }$.

v = 100;
azres = 1.5;
grazang = 30;

Compute the swath length constraint.

swlen = sarmaxswath(v,azres,grazang)

swlen = 2.5963e+06

Input Arguments

v — Sensor velocity

positive real scalar | vector

Sensor velocity in meters per second, specified as a positive real scalar or vector.

Data Types: double

azres — Image azimuth or cross-range resolution

positive real scalar | vector

Image azimuth or cross-range resolution in meters, 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

dcang — Doppler cone angle

90 (default) | scalar in the range [0, 180]

Doppler cone angle in degrees, specified as a scalar in the range [0, 180]. This argument identifies the direction toward the scene relative to the direction of motion of the array.

Data Types: double

Output Arguments

swlenc — Upper bound on swath length

matrix

Upper bound on swath length in meters, returned as a matrix. The rows of swlenc correspond to the velocity values in v. The columns of swlenc correspond to the azimuth resolution values in azres.

Extended Capabilities

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

Version History

Introduced in R2021a