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Programming > C > Re: problem wit...
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Re: problem with output of the program on different OS

by pereges <Broli00@[EMAIL PROTECTED] > May 16, 2008 at 03:01 AM

btw I changed a few things in my code to make it more efficient. In
radar.c, I got rid of gen_grid_points which was creating an array of
points i.e. pointinarray. You are creating a huge array  in
initialize_radar as well(raylist array) and then you ahve two huge
arrays in the memory at the same time putting too much burden on the
system. Now, I create the points on the fly and assign it directly to
radar->raylist[i].origin which consumes less memory as I have only one
array i.e. raylist. In test.c, there is a change in formula of RCS:

RCS = 4 * PI * R ^2 * ES / Ei

where R is the average distance travelled by the scattered rays
(Rsum / Rcount)

Also, the amplitude of electrical field is now of the complex form:

a + ib so there has to be two entries for real and imaginary everytime
the user enters the amplitude.

There is also little change in the calculation of electrical field of
reflected rays as you can see in cases for r.depth == 1 and r.depth ==
2 in raytrace module. Actually the formula for electrical field is:

E(s) = E(0) * exp(-jks)

This is for direct ray when the ray is travelling from the source to
the object. E(0) is the electrical field at the source i.e. the
amplitude that you enter initially. k is the radar->wavenumber field
and s is the distance travelled by the ray.To calculate electrical
field for reflected ray:

E(s) = E(P) * RM * ( 1 / (s + 1)) * exp(-jks)

where E(P) is the electrical field incident at the point(same point
from where the reflected ray starts), is distance travelled and RM is
a reflected matrix

  -1   0
   0   1



Here's the code:

 http://upload2.net/page/download/HaJJNGPTto8ac2z/raytrace.tar.gz.html

The code compiles and there are no errors.

For following values:

frequency: 40e+7
amplitude: 10e-4 10e-4
numberofrays: 1000

I'm getting output as:

Rsum: 25985.552124 Rcount: 25 R: 1039.422085
Es: 9.988147e-11 Ei: 3.192876e-03 RCS: 4.247141e-01
 




 91 Posts in Topic:
problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-08 01:20:05 
Re: problem with output of the program on different OS
Richard Heathfield <rj  2008-05-08 08:26:22 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-08 01:34:12 
Re: problem with output of the program on different OS
Ian Collins <ian-news@  2008-05-08 20:42:23 
Re: problem with output of the program on different OS
Richard Heathfield <rj  2008-05-08 09:13:32 
Re: problem with output of the program on different OS
jacob navia <jacob@[EM  2008-05-08 11:59:09 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-08 01:49:39 
Re: problem with output of the program on different OS
Nick Keighley <nick_ke  2008-05-08 02:19:06 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-08 06:45:10 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-08 22:40:28 
Re: problem with output of the program on different OS
Richard Heathfield <rj  2008-05-09 05:52:41 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-08 23:20:44 
Re: problem with output of the program on different OS
Richard Heathfield <rj  2008-05-09 07:32:33 
Re: problem with output of the program on different OS
Ian Collins <ian-news@  2008-05-09 19:59:46 
Re: problem with output of the program on different OS
Richard Heathfield <rj  2008-05-10 06:31:13 
Re: problem with output of the program on different OS
Richard Heathfield <rj  2008-05-12 01:35:03 
Re: problem with output of the program on different OS
Spiros Bousbouras <spi  2008-05-09 00:28:46 
Re: problem with output of the program on different OS
Richard Heathfield <rj  2008-05-09 07:51:07 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 01:22:57 
Re: problem with output of the program on different OS
Ian Collins <ian-news@  2008-05-09 21:08:08 
Re: problem with output of the program on different OS
Spiros Bousbouras <spi  2008-05-09 01:51:36 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 02:16:12 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 02:25:03 
Re: problem with output of the program on different OS
Ian Collins <ian-news@  2008-05-09 21:56:02 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 02:27:52 
Re: problem with output of the program on different OS
Antoninus Twink <nospa  2008-05-09 12:00:16 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 03:28:15 
Re: problem with output of the program on different OS
Ian Collins <ian-news@  2008-05-09 22:53:30 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 04:01:47 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 04:21:35 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-09 05:33:08 
Re: problem with output of the program on different OS
Richard<_rdev@[EMAIL P  2008-05-09 15:25:49 
Re: problem with output of the program on different OS
Chris Dollin <chris.do  2008-05-13 13:07:33 
Re: problem with output of the program on different OS
Richard Heathfield <rj  2008-05-13 12:29:31 
Re: problem with output of the program on different OS
Chris Dollin <chris.do  2008-05-13 16:03:51 
Re: problem with output of the program on different OS
CBFalconer <cbfalconer  2008-05-13 10:02:24 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 06:33:21 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-09 06:46:50 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 07:11:31 
Re: problem with output of the program on different OS
Ben Bacarisse <ben.use  2008-05-09 15:25:42 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-09 07:57:58 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-09 08:45:35 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 09:42:59 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 10:18:52 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-09 10:26:53 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 11:28:47 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-09 12:09:57 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 12:14:55 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-09 12:43:25 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-09 12:58:32 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-10 04:22:35 
Re: problem with output of the program on different OS
Richard Heathfield <rj  2008-05-10 12:24:42 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-10 09:26:16 
Re: problem with output of the program on different OS
Richard Heathfield <rj  2008-05-10 17:39:35 
Re: problem with output of the program on different OS
Flash Gordon <spam@[EM  2008-05-10 23:31:36 
Re: problem with output of the program on different OS
Joe Wright <joewwright  2008-05-11 10:04:20 
Re: problem with output of the program on different OS
dj3vande@[EMAIL PROTECTED  2008-05-11 20:40:39 
Re: problem with output of the program on different OS
pete <pfiland@[EMAIL P  2008-05-11 19:50:38 
Re: problem with output of the program on different OS
Harald van =?UTF-8?b?RMSz  2008-05-11 16:58:12 
Re: problem with output of the program on different OS
Spiros Bousbouras <spi  2008-05-11 18:52:11 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-12 02:17:17 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-12 02:22:09 
Re: problem with output of the program on different OS
Richard Heathfield <rj  2008-05-12 10:54:15 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-12 05:42:52 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-12 06:29:10 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-12 08:06:49 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-12 10:27:24 
Re: problem with output of the program on different OS
Ben Bacarisse <ben.use  2008-05-12 18:44:43 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-12 14:03:00 
Re: problem with output of the program on different OS
Ben Bacarisse <ben.use  2008-05-13 01:39:16 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-12 18:27:34 
Re: problem with output of the program on different OS
Ben Bacarisse <ben.use  2008-05-13 04:46:03 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-12 21:13:42 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-12 22:34:37 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-13 04:13:26 
Re: problem with output of the program on different OS
Ben Bacarisse <ben.use  2008-05-13 13:12:32 
Re: problem with output of the program on different OS
Ben Bacarisse <ben.use  2008-05-13 13:15:11 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-13 05:23:49 
Re: problem with output of the program on different OS
Ben Bacarisse <ben.use  2008-05-13 13:58:08 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-13 06:13:24 
Re: problem with output of the program on different OS
Ben Bacarisse <ben.use  2008-05-13 15:23:07 
Re: problem with output of the program on different OS
Ben Bacarisse <ben.use  2008-05-13 15:33:58 
Re: problem with output of the program on different OS
CBFalconer <cbfalconer  2008-05-13 09:53:22 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-16 02:16:28 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-16 03:01:45 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-16 03:03:12 
Re: problem with output of the program on different OS
Ben Bacarisse <ben.use  2008-05-16 12:24:06 
Re: problem with output of the program on different OS
pereges <Broli00@[EMAI  2008-05-16 04:55:17 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-16 05:02:26 
Re: problem with output of the program on different OS
Ben Bacarisse <ben.use  2008-05-16 14:27:26 
Re: problem with output of the program on different OS
Bart <bc@[EMAIL PROTEC  2008-05-16 08:02:31 

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tan12V112 Thu Jul 24 2:53:10 CDT 2008.