You are here:
Foswiki
>
Cosmo Web
>
RadioT4
>
RadioT4Scanning
>
RadioT4ScanningList
>
RadioT4ScanningHorAz
(revision 1) (raw view)
Edit
Attach
<< Cosmo.WebHome %TOC% ---- %INCLUDE{"RadioT4ScanningList"}% ---++ scanning in horizontal AZ-ZD (azimuth-zenith_distance) coordinates ---+++ version of rt_main.c 2006-12-09 15:46 * rt_main.c 2006-12-09 15:46: <br /> <img src="%ATTACHURLPATH%/scan_no_patch_080610hor.png" alt="scan_no_patch_080610hor.png" width='570' height='570' /> ---+++ with scan_corners-0.1.patch ---++++ a few comments on the patch The main change in the algorithm was to use the *measured* offsets for making decisions instead of the *set* (requested) offsets. test_scan.c at present uses an arbitrary algorithm for modelling how the telescope actually gets to where it wants to get, and shakes the telescope around a bit to possibly detect any obvious numerical rounding problems. SCAN_CORNER_TOLERANCE_DEG in rt_main.h decides how sharp or rounded the corners should be - the smaller it is, the more sharp they are. * scan_patch_0.1_080612hor.png: <br /> <img src="%ATTACHURLPATH%/../RadioT4Scanning/scan_patch_0.1_080612hor.png" alt="scan_patch_0.1_080612hor.png" width='570' height='570' /> <img src="%ATTACHURLPATH%/../RadioT4Scanning/scan_patch_0.1_080612hor_closeup.png" alt="scan_patch_0.1_080612hor_closeup.png" width='570' height='570' /> parameter in rt_main.h: #define SCAN_CORNER_TOLERANCE_DEG 0.002 /* tolerance in degrees for scans */ parameters for scan_patch_0.1_080612hor.png read from simulator: <pre> 2008.6.12 15:40:21.639771 epoch=1950 ST=37195.7 UT=56421.6 date=1.2062e+07 JD=2.45463e+06 dayOfYear=164 real: AZ=29.0388 ZD=19.2727 REC=143.624 DEC=35.559 set: AZ=30.0362 ZD=20.2732 REC=142.796 DEC=34.7486 offsets: AZ=-1 ZD=-1 REC=0.8285 DEC=0.8097 VA64 VZ=17 flags: Hoffset=1 Eoffset=0 Sourcedemand=1 Pointdemand=0 rCA=3840 rCB=3840 rCX=3840 rCY=3840 rCZ=3840 commandDesc :scan 1000 11 [OK] </pre> ---++++ identical code, but increase tolerance to: SCAN_CORNER_TOLERANCE_DEG 0.05 * scan_patch_0.1_tol0p05_080612.png: <br /> <img src="%ATTACHURLPATH%/../RadioT4Scanning/scan_patch_0.1_tol0p05_080612.png" alt="scan_patch_0.1_tol0p05_080612.png" width='570' height='570' /> parameters read from simulator: <pre> 2008.6.12 19:5:36.541391 epoch=1950 ST=49544.3 UT=68736.5 date=1.2062e+07 JD=2.45463e+06 dayOfYear=164 real: AZ=0.7797 ZD=17.8834 REC=206.142 DEC=35.2133 set: AZ=2.0841 ZD=18.391 REC=206.136 DEC=34.7132 offsets: AZ=-1 ZD=-1 REC=0.4007 DEC=0.9935 VA74 VZ=1 flags: Hoffset=1 Eoffset=0 Sourcedemand=1 Pointdemand=0 rCA=3840 rCB=3840 rCX=3840 rCY=3840 rCZ=3840 commandDesc :scan 1000 11 [OK] </pre> -- Main.BoudRoukema - 17 Jun 2008
Edit
|
Attach
|
P
rint version
|
H
istory
:
r2
<
r1
|
B
acklinks
|
V
iew topic
|
Edit WikiText
|
More topic actions...
Topic revision: r1 - 17 Jun 2008,
BoudRoukema
Cosmo
Log In
or
Register
Toolbox
Create New Topic
Index
Search
Changes
Notifications
RSS Feed
Statistics
Preferences
Webs
Cosmo
Main
Sandbox
System
English
Français
Polski
Copyright © CC-BY-SA by the contributing authors. All material on this collaboration platform is copyrighted under CC-BY-SA by the contributing authors unless otherwise noted.
Ideas, requests, problems regarding Foswiki?
Send feedback