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### Highlights from Sphere RCS

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4.4 | 8 ratings Rate this file 10 Downloads (last 30 days) File Size: 2.16 KB File ID: #1568 Version: 1.0

# Sphere RCS

### Douglas Dougherty (view profile)

04 Apr 2002 (Updated )

Computes the RCS of a perfect sphere.

File Information
Description

SPHERE_RCS calculates the exact RCS for a perfect sphere of given diameter, using the Mie series solution, given by equations 4-19, 4-16, and 4-17 in section 4.2 of "Radar Cross Section," by Eugene F. Knott, John F. Shaeffer, and Michael T. Tuley (c1985 Artech House).

MATLAB release MATLAB 5.2 (R10)
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Comments and Ratings (11)
28 Jan 2016 Ali Kadhim

### Ali Kadhim (view profile)

If you are having trouble running the code due to BESSELJ issue, then do the following:

1.)Search for besselj in the script
2.)Delete the second outputs for besselj/h:
ierr(1,n)
ierr(2,n)
ierr(3,n)
ierr(4,n)
3.)Comment out the following section:
if any(any(ierr)) % if any element in 'ierr' is non-zero...
disp('Warning: There was an accuracy error in evaluating a Bessel or Hankel function.')
end

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19 Dec 2015 Furkan

### Furkan (view profile)

>> sphere_rcs
Sphere diameter {inches}? [12.0]: 2
Frequency [, end Frequency] {GHz}? [3.0]: 4
Error using besselj
BESSELJ no longer returns a second output. Use J = BESSELJ(NU,Z) instead.

Error in sphere_rcs (line 55)
[B1(n),ierr(1,n)] = besselj( n + 1/2, ka ) ;

How can i fix this problem??

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22 Oct 2009 sunil thakur

### sunil thakur (view profile)

i found what i was serching for

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30 Oct 2006 caner özdemir
04 Mar 2006 carllos jara

I need that file

16 Sep 2005 Victor Paz

Very good file.

23 Aug 2005 Edo I.

Simlpe, straigth forward. Exactly what I was looking for

12 Oct 2004 Bernardo Knoblich de Souza

Very quick and efficient.

04 Aug 2003 hamed alisadeghi

i need function of simple shape rcs
your program was good but if it have had a figure that show rcs of sphere at all aspect is the best.

04 Apr 2003 Bhanuprakash Tallapragada

Good Code. If Bistatic Cross Sectionb was also included it would help most academic purposes.

06 Mar 2003 Candida Spillard

This is a useful programme as long as users know what they're doing! Numerical stability is a problem when doing Mie scattering calculations, and all Mie codes as far as I know have their limitations.

Having said all that I'd love to see a Water Drop version (dielectric instead of perfectly conducting), Cheers!