Method | |||||
Band | Freq | Tilt | copol | co+cross | scan numbers |
3 | 100 | 0 | 4.88% | 4.91% | 5,6,7,8 |
6 | 243 | 45 | 11.78% | 11.81% | 6,8,9,10 |
7 | 317 | 45 | 22.35% | 21.88% | 22,23,24,25 |
X | Y | Z | |
Pol 0 | 2.1 | 1.0 | 5.4 mm |
Pol 1 | 3.2 | 2.2 | 6.0 mm |
Scan | EST | Peak(dB) | Center (m) | Pol axis (deg) | Fit result |
2 | 11:22:33 | -28.78 | Y=-0.1682 | +45 | |
3 | 11:25:38 | -33.59 | Y=-0.1682 | +45 | |
4 | 11:27:43 | -26.74 | Y=-0.1682 | +45 | |
5 | 11:29:06 | -24.85 | Y=-0.1682 | +45 | |
6 | 11:30:28 | -19.59 | Y=-0.1682 | +45 | |
7 | 11:31:42 | -15.00 | Y=-0.1682 | +45 | |
8 | 11:33:00 | -12.33 | Y=-0.1682 | +45 | |
9 | 11:34:21 | -3.66 | Y=-0.1682 | +45 | |
10 | 11:35:35 | -4.13 | Y=-0.1682 | +45 | |
11 | 11:36:36 | -6.80 | Y=-0.1682 | +45 | |
12 | 11:37:48 | -5.30 | Y=-0.1682 | +45 | |
13 | 11:39:49 | -0.02 | Y=-0.1682 | +45 | |
14 | 11:41:06 | +8.43 | Y=-0.1682 | +45 | |
15 | 11:42:05 | +5.34 | Y=-0.1682 | +45 | |
16 | 11:48:07 | +5.29 | Y=-0.1682 | -135 | |
17 | 12:02:25 | +5.26 | Y=-0.1682 | -135 | |
18 | 12:03:43 | +5.28 | X=+0.1602 | -135 | |
19 | 12:05:22 | +5.26 | X=+0.1602 | -135 | Y=-0.16654 |
20 | 12:06:41 | +5.28 | Y=-0.1662 | -135 | X=+0.16051 |
21 | 12:10:27 | +5.27 | Y=-0.1662 | +45 | |
22 | 12:12:22 | +5.26 | Y=-0.1662 | +45 | X=+0.16296 |
23 | 12:13:31 | +5.26 | X=+0.1632 | +45 | Y=-0.16633 |
Delta X = +2.45 mm, Delay Y = +0.21 mm | |||||
24 | 12:31:01 | -21.08 | X=+0.1632 | -45 | |
25 | 12:34:17 | -20.92 | X=+0.1632 | -45 | |
26 | 12:35:30 | -23.00 | Y=-0.1642 | -45 | |
27 | 12:37:00 | -23.05 | Y=-0.1642 | -45 | X= |
28 | 12:38:07 | -20.94 | X=+0.1622 | -45 | Y=-0.16533 |
29 | 12:39:25 | -21.07 | X=+0.1622 | +135 | |
30 | +135 | ||||
31 | +135 |
file | angle | phase center (-b 6) |
---|---|---|
squint using scans (1,4) w/indiv. correction | -4.5095 - -4.55, +0.8589 - +0.96 = +0.04, -0.10 = (+0.08", -0.21) | |
squint using scans (1,4) w/avg correction | -4.5095 - -4.36, +0.8589 - +1.115 = -0.149, -0.256 = (-0.32", +0.54) | |
squint using scans (1,3) w/indiv. correction | -4.5094 - -4.23, +0.8589 - +0.53 = -0.28, +0.33 = (-0.59", +0.70") | |
squint using scans (1,3) w/avg correction | -4.5094 - -4.41, +0.8589 - +0.7656 = -0.099, +0.093 = (-0.21", +0.20") | |
Pol1_Band6LO249RF24307_135__NF indiv. corrected | -5.6144+1.063, +0.2388+0.724 = (-4.55, +0.96) | |
Pol1_Band6LO249RF24307_135__NF avg corrected | -5.6144+1.25, +0.2388+0.876 = (-4.36, +1.115) | |
Pol1_Band6LO249RF24307_135__NF | 135 | -5.6144, +0.2388, +259.0191 |
Pol1_Band6LO249RF24303_neg45__NF indiv. corrected | -5.2764+1.043, +2.0257-1.497 = (-4.23, +0.53) | |
Pol1_Band6LO249RF24303_neg45__NF avg corrected | -5.2764+0.87, +2.0257-1.26 = (-4.41, +0.7656) | |
Pol1_Band6LO249RF24303_neg45__NF | -45 | -5.2764, +2.0257, +257.9350 |
Pol0_Band6LO249RF244__NF | +45 | -4.5094, +0.8589, +276.6949 |
Pol0_Band6LO249RF24302__NF | -135 | -7.0489, +1.3125, +256.9539 |
Pol 1 180 center - Pol 1 0 center = (dX1,dY1) | -0.338, -1.787 | |
Pol 0 center - Pol 1 center = (x_diff,y_diff) | +0.767, -1.167 | |
Pol 0 center - Pol 1 180 center = (x_diff1,y_diff1) | +1.105, +0.620 | |
Pol 0 180 center - Pol 0 0 center = (dX,dY) | -2.539, +0.454 | |
individual correction from +45 to -45 (from below) | (+1.043,-1.497) | |
individual correction from +45 to +135 (from below) | (+1.063,+0.724) | |
avg correction for rotating from +45 to -45 | 1.08cos(10)-1.08sin(10), -1.08sin(10)-1.08cos(10) = +0.87, -1.26 mm | |
avg correction for rotating from +45 to +135 | 1.08cos(10)+1.08sin(10), +1.08cos(10)-1.08sin(10) = +1.25, +0.876 mm | |
average geometry | major axis = 2.16 mm, minor axis = 0.396, angle=atan(0.396/2.16)= 10 deg |
file | angle | phase center (-b 9) |
---|---|---|
Band9_676GHz45el_p0_20101214_160636__FF_Pol0_Copol.txt | 0 | -0.2110, -8.3813, -281.3219 |
Band9_676GHz45el_p1_20101214_171918__FF_Pol1_Copol.txt | 90 | -1.2355, -5.6073, -274.1291 |
Band9_676GHz45el_p0_180_20101214_183202__FF_Pol0_Copol.txt | 180 | -4.4468, -6.5601, -274.5453 |
Pol 180 center - Pol 0 center = (dX,dY) | -4.2470, +1.8212 | |
Pol 0 center - Pol 1 center = (x_diff,y_diff) | +1.0245, -2.774 | |
geometry | theta = -23 deg | |
correction for Pol 1 for rotating from 0 to 90 = (x_corr, ycorr) | +1.21, -3.03 | |
Band9_676GHz45el_p1_20101214_171918__FF_Pol1_Copol.txt corrected | -0.0255, -8.637 | |
squint (corrected) | (-0.186,+0.256) mm = (-0.40,+0.55) arcsec = (-0.045,+0.062) beams |
Pol 1 angle | x_corr | y_corr |
+90 | (-dX-dY)/2 | (dX-dY)/2 |
-90 | (-dX+dY)/2 | (-dX-dY)/2 |
I | Attachment | Action | Size | Date | Who | Comment |
---|---|---|---|---|---|---|
2257_001.pdf | manage | 80 K | 2010-12-20 - 10:51 | ToddHunter | theoretical cause of large squint measurements, confirmed by these tests | |
png | plotfit19.png | manage | 31 K | 2010-12-06 - 17:27 | ToddHunter | |
png | plotfit20.png | manage | 29 K | 2010-12-06 - 17:27 | ToddHunter | |
png | plotfit22.png | manage | 29 K | 2010-12-06 - 17:28 | ToddHunter | |
png | plotfit23.png | manage | 31 K | 2010-12-06 - 17:28 | ToddHunter | |
png | plotfit28.png | manage | 31 K | 2010-12-06 - 17:32 | ToddHunter | |
png | pol0_co_vs_copluscross.png | manage | 165 K | 2010-03-24 - 15:50 | ToddHunter | |
squintCorrection-rotated.pdf | manage | 146 K | 2010-12-17 - 09:56 | ToddHunter | notes showing the correction formula for each quadrant |