Campaign 2007 Log

From Theory of Measurements Wiki

09.10.2007 19:00 UT

• The beginning of the VHF exp was disturbed by new MST radar at 224+/-0.5MHz. Now everything should be fine.
• NI sampling at 1MHz at 224MHz to OctoMac

--Juha 22:24, 9 October 2007 (EEST)

09.10.2007 19:30 UT

• Starting to sample with USRP at 2MHz at 224MHz, sampling to thecus

--Juha 22:27, 9 October 2007 (EEST)

09.10.2007 19:40 UT

• NI stopped because of filesystem problems, restarted at 19:44

--Juha 22:44, 9 October 2007 (EEST)

09.10.2007 20:17 UT

• NI timestamps are broken. I will try to fix them for tomorrow.

09.10.2007 20:28 UT

• Moved USRP toi UTC, small time warp.

--Juha 23:29, 9 October 2007 (EEST)

10.10.2007 10.57 UT

• Heating VHF cancelled due to MST radar interference.
• Started sampling dlayer experiment at 2MHz using NI and USRP.

10.10.2007 11:26 UT

• Japanese UHF experiment recording started at 2.5 mus sampling

10.10.2007 17.59 ut

• VHF-koe moare_fed_p6 aloitettiin ch1
• 1803 carrier corrected to 11.4
• cluster koe alkaakin vasta 18:30UT,
• siihen asti nauhoitetaan moare-fed-prog6
• cluster_tau1 nauhoitus alkoi 9.8M if:llä noin 1832, taajuudet 9.6 ja 10 M
• kanava vaihdettiin ch1:st' ch2:een 1844
• kanava takaisi ch1 ja 10M samplitaajuus 1902

10.10.2007 18.45 UT

• UHF sampling since 18.03 at 2MHz centerfreq 11.6MHz

--Juha 21:47, 10 October 2007 (EEST)

10.10.2007 19.12 UT

• Took away attenuation from UHF signal.

10.10.2007 20.10 UT

• ^J character (labview line feed accidentally in file name).

10.10.2007 20.38 UT

• Changed to prog7 on UHF

10.10.2007 20.48 UT

• Changed to prog5 on UHF

10.10.2007 21.00 UT

• Changed to prog6 on UHF

10.10.2007 22.38 UT

• UHF accidentally down.

10.10.2007 2245 UT

• Cluster experiment stopped
• started to turn VHF into vertical

10.10.2007 2255 UT

• starting moare_6_fed
• full power at 2301 with antenna vertical

10.10.2007 2333 UT

• changed vhf sampling to 10M at 2330
• maybe plasma line at +- 3.2 MHz

10.10.2007 2351 UT

• VHF changed to moare2
• at 0000 added 3 db attenuation (from 10 db to 13 db)
• new folder started at 0000 but used wrong name (moare6) instead of moare2

11.10.2007 0009 UT

• ionosond refl at 100km virt height in sod.

11.10.2007 0025 UT

• crowbar
• moare1 started 0034 after some troubles

11.10.2007 0100 UT

• Changing UHF to prog7.

11.10.2007 0151 UT

• Stopped VHF and UHF.

11.10.2007 0931 UT

• moare3 on vhf at 10M sampling, folder named moare2

11.10.2007 1204

• end of recording

11.10.2007 1224

• started recording CP1 UHF data at 1 M with NI. The experiment actually starts at 1300
• USRP also started recording about 1240 after Juha booted the machine
• 1536 changed recording to 10 M
• usrp remains recording comparision copies at 1M
• 1551 transmission samples seemed bullshit, experiment stopped

11.10.2007 1558

• sampling again at 1M - transmission samples seem less bullshit but bullshit anyway
• There is some very disturbing noise on top of UHF transmission samples.
• 1640 folder name corrected to correspond to 1M sampling as was started at 1558
• center frequency chandet to 9,95M to make the frequencies symmetric. It was at this oint 10 MHz
• sampling changed to 500k at 1710 to save memory

11.10.2007 1850

• Started sampling with tau8 with USRP at 1MHz centerfreq 9.8MHz
• Some problems with sampler going on and off (12V input line not very stable)

12.10.2007 0900

• CP1 sampling at 0.5 M was switched to 10 M to see possible plasma lines
• 10M sampling stopped at 0923. No plasma lines visible. Wrong name in folder.
• 0.5 M sampling resumed after a crowbar at 0930
• This was not CP1 at all :

12.10.2007 0940

• Beata experiment recording started at 0,25M at UHF

12.10.2007 0947

• Beata UHF recording started using USRP at 0.25MHz

12.10.2007 1147

• Plasma line seen at EISCAT RT display at 5.5 MHz at 200 km
• 10 M sampling started
• center frequency changed from 10.4 to 11.4 at 1153
• changed back to 0.25M and 10.4MHz at 1244
• ended recording 1852

12.10.2007 1900

• ARC1 started at UHF, NI sampling started at 1M at 10.1MHz

12.10.2007 2203

• changed to moare 3, 1M sampling with NI, 2M with usrp, 11.6 MHz
• 2209 added 3dB attenuation to NI

13.10.2007 2347

• changed to moare 6, 1M sampiing, 11.6 MHz

13.10.2007 0018

• USRP restarted. Forgot to switch program name.

13.10.2007 0030

• started to measure optoheads with NI, 2,5M sampling, 11MHz center
• 10.4 MHz pulse seemed weak, changed many times center between 10,4 11,6 and 11
• Maybe anyway OK
• changed to 11MHz center at 0130 and left running

13.10.2007 0830

• started moare3 at 1M sampling at 11,2 MHz on VHF
• crowbar at about 0905
• continuing with 5M sampling at 0918
• crowbar again at 0919
• up again at 0923
• down at 092340
• up again at 0926
• down at 0942
• up again at 0946

13.10.2007 11.27

• UHF borked. weak TX signals, laptop power failure, time sync problem. should be now fixed, TX signals also look a bit better.

--Juha 14:28, 13 October 2007 (EEST)

14.10.2007 0850 UHF sampling started at NI arcDLayer with 2,5M at 10.1 MHz AT VHF moare6 with usrp

14.10 0910 UHF sampled with usrp at 2M VHF sampled with NI at 1M Frequency offset of about 1/5000mus seen in VHF both with usrp and with NI

14.10 0926 Changed UHF sampling to 4MHz

14.10 1125

• switched sampling during off period (USRP/NI) (because of missing data in NI)
• NI sampling UHF arc1ht at 5M (10.1 MHz)
• added 10 db attenuation to NI/UHF at 1135
• crowbas at 1207
• changed UHF/NI attenuation to 3db from 10 db at 1210

14.10 1212

• Restarted VHF sampling with USRP.

15.10 0900

• Started MoareD10 on VHF with NI good-and-old at 1M and 9.6MHz
• VHF crowbar at about 0915
• Planning to start MoareD5 at UHF with USRP

15.10 0959

• Started UHF with moare d5

15.10 1230

• Stopping UHF & VHF as planned. (why are there two different conflicting schedules?)
• No crowbars since 0915!

15.10 1606

• Started VHF Tau8 sampling with NI at 1 M and 9.8 MHz
• crowbar at 1812

15.10 2023

• sampling beata with USRP since 1800 UT when it started running...

16.10 0834

• sampling EISCAT3D Tau8 at VHF
• noticed that NI had not been in sync to clk in !
• VHF antenna vertical - seems not to be 3D experiment

16.10 0930

• sampling MoareD10 at NI and UHF, 10.4MHz, 1M
• antenna turned to zenith 0930

16.10 0930

• sampling VHF with USRP and UHF with NI

16.10.2007 1124

• Klystron experts visited: it is possible to spread the boxcar power as we want !
• Sebastien Berger klystron develepment scientist sebastien.berger@thalesgroup.com

16.10.2007 1225

• Tau8 at 1M with VHF/NI and 10 MHz
• Tau8 also at 1M centerfreq 10MHz with USRP for comparison study.

16.10.2007 1401

• Stopped NI and USRP.

17.10.2007 0900

• Started sampling UHF with USRP and NI at 2 & 1MHz. Moare d5

17.10 0900

• NI samples UHF with 1M
• new moare D10 with smprf taken to use 0915
• proper frequencey (11.6) found at 0925
• NI changes to VHF at 0929

17.10 0929

• USRP sampling UHF d10.2 (with name moare-d5-2007.10.17_09.25.00.159357070)

17.10 095503

• Heating is lagging about 3.2 - 3.5s

17.10 1202

• Heating stopped. Lag about 3.47s

17.10 1816

• Started sampling VHF tau1 with NI at 0.5MHz

18.10 0937

• Started a bit late, but now sampling VHF at 1MHz and UHF at 2MHz.
• VHF sampling at 9.6MHz

18.10.0915

• While checking usrp data ML found debris echoes at the following location:
• folder moare-d5-2007.10.17_09.25.00.159357070f sample location 18286023
• seem to exist between locations 17387218 and 21842024

18.10.1004

• It seems that we finally have something in the D region between 80 and 100km.
• There is also sporadic E conditions (sodankylä up to 15MHz)

18.10.1015

• Changed sampling rate to 5MHz on NI to get better resolution
• Also added 3dB attenuation

18.10 1022

• Error in recording, reverting back to 1MHz

18.10.2007 10:53:54

• Noticed meteor echoes in VHF, has been seeing them for 5 minutes,
• file no 401 at 1055
• seem to stop at 1055 approx
• meteor seen again at 11.16.50 file no about 662
• 11:18:30 file no 680 very strong
• 11:19:15 file no 687 again
• 11:20:05 file 699 strong
• 11:20:50
• 11:22:23 really strong
• 11:23:06
• seem to stop at 11:26
• 779 112630 very strong
• found in file 778, offset 15000 samples from beginning !

18.10.2007 1200

• Heating stopped.
• Continuing an extra hour to get data with higher sampling rates
• NI sampling UHF at 2.5MHz
• USRP sampling VHF ar 4MHz
• No sporadic E, hopefully it will come back.

18.10.2007 1300

• stopped both experiments
• sporadic E did not come back

18.10.2007 1832

• started recording Beata UHF with NI at 1M and 10.4MHz

19.10.2007 0905

• started moare5.2 at NI and UHF with 1M and 11.6MHz
• will start gmoare on VHF
• Discussions with Ingemar:
• IF1 for UHF is at 114 MHz and 15 MHz wide and plasma lines can be seen only by transmitting at lower frequencies which is not very efficient
• IF1 for VHF is 20 MHz wide at 70 Mz and is better for this purpose
• we must take with us splitters for this next time !

19.10.2007 9:31:30

• gmoare started on VHF and usrp at 2M sampling
• Illka got real-time analysis immediately working at first try !

19.10.2007 1005

• Several crowbars.

19.10.2007 1200

• Both experiments stopped at 1200

19.10.2007 1553

• When analyzing UHF exp from 18.10, one can see quick transient heating syncronized things in the F region
• Also some maybe heating related things at 90km. (eg. at 2839, 2879, 2899, 2919s)
• Sporadic E is at some points visible with naked eye in the raw data (eg. 3445s)

19.10 1823

• Timestamp at 1823, USRP sampling centerfreq 12MHz at 8MHz and NI at 1MHz ion line.

19.10 1920

• Changed gmoare freq to F4. Only even freqs work, least significant bit is missing (the physical cable seems to be missing from radar controller).

ML comments: 18.25 crowbar 18.54 changed NI sampling to 2.5MHz 19.23 changed to F4 = 9.2Mhz to facilitate 5MHz plasma line band in usrp 20.00 Added 3dB attenuation to NI sampling after crowbar

19.10.2007 20:14 ML left to sleep