highaltitude.log.20190408

[00:08] <Ian_> ?
[00:09] <Darkside> TimMc_: yes
[00:09] <Darkside> but should be fixed shortly
[00:09] <Darkside> ifnot already
[00:10] <Darkside> wiil see in about 20 min i guess
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[00:32] <Darkside> uh oh
[00:32] <Darkside> somethign is broken
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[01:18] <Ian_> Those support telephones will be ringing this morning.
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[03:13] <SpacenearUS> New position from 03U3B-25 after 038 hours silence - 12https://tracker.habhub.org/#!qm=All&q=U3B-25
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[05:23] <Pit[m]> Authorities are slow in Germany, i bet this take weeks to fix ;)
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[05:59] <SpacenearUS> New position from 03SA6BSS-9 after 0315 hours silence - 12https://tracker.habhub.org/#!qm=All&q=SA6BSS-9
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[07:13] <daveake> Vaisala tweeted that they are working "around the clock" to fix the rollover issue. Not sure I'd have phrased it like that ...
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[08:37] <B151> Hi I cant export telemetry csv files for SILTS1 Doc ID: 710612ada7c68b0dbfecf3fbf683588c
[08:47] <Pit[m]> https://twitter.com/VaisalaGroup/status/1115147479329202177?s=19
[08:47] <SpacenearUS> New vehicle on the map: 03DL1EEL-11 - 12https://tracker.habhub.org/#!qm=All&q=DL1EEL-11
[08:57] <craag> B151: That's because there are no payloads registered on that flight
[08:57] <craag> huh, or the web interface is broken
[08:58] <B151> there are 2 payloads ex2 and SILTS1
[09:01] <B151> ex2 Doc ID: 9c6da3fd029bf8e901b626ef9cbbd2da and SILTS1 Doc ID: 68eb357c076efa57c86ea922e31a8bfb
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[09:05] <craag> B151: On the EPT page, just select the flight and then wait a few minutes and the paylaods will appear :)
[09:05] <craag> There seems to be an unrelated bug on the genpayload pages with the parsing of the UTC timezone on your flight
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[09:10] <B151> Yes I see payloads, but can't download any data
[09:14] <craag> err yes you're right
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[09:26] <michal_f> hi. I need code to calculate elevation from two 3D GPS positions. I'm sure UKHAS repos have it somewhere :)
[09:26] <michal_f> can anybody hint me ?
[09:27] <Darkside> ahh yep
[09:27] <Darkside> theres a few what language?
[09:27] <Darkside> python? js?
[09:27] <michal_f> c++ or watever :)
[09:28] <Darkside> oh
[09:28] <michal_f> I'm already looking at your repos, but there's a lot of it
[09:28] <Darkside> i can do python and js :P
[09:28] <michal_f> python is fine
[09:28] <Darkside> https://github.com/projecthorus/radiosonde_auto_rx/blob/master/auto_rx/autorx/utils.py#L630
[09:28] <Darkside> thats the function you are after
[09:28] <michal_f> much obliged sir !
[09:29] <michal_f> it does everything I need and more
[09:31] <Darkside> thats from some other program i cant remember
[09:31] <Darkside> but yeah, its useful
[09:31] <Darkside> theres also a JS equivalent
[09:40] <B151> Any ideas how to get flightlogs for SILTS1? Data is out there :) since I see flight in habhub tracker.
[09:42] <Darkside> if you cant pull it from ept, then im not sure
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[09:56] <craag> B151: Try searching for the payloads directly
[09:56] <craag> in the EPT page
[09:56] <craag> that appears to return data, I don't know the time range you're after though
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[10:01] <Darkside> need to make that payload list filter out RS
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[10:18] <SpacenearUS> New vehicle on the map: 03SITS-5 - 12https://tracker.habhub.org/#!qm=All&q=SITS-5
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[10:48] <michal_f> weird, using this formula with floats gives precision errors, with doubles all OK
[10:54] <edmoore> michal_f: under what conditions?
[10:54] <edmoore> i'd be surprised if single precision floats weren't good enough for 99% of 'where you point my antenna' calcs
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[11:01] <michal_f> this could be me doing somethin bad converting python to c.
[11:01] <michal_f> https://pastebin.com/3EEYxppj
[11:01] <michal_f> for a pair: 52,21,0 52,21,30000
[11:01] <michal_f> with floats, the straight line distance is not 30k
[11:02] <michal_f> you can test it live on cpp.sh if you wish :)
[11:03] <michal_f> but this was special case after all
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[11:46] <TimMc_> Vaisala on twitter ^_^
[11:54] <Darkside> yeah
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[11:59] <Ian_> "Despite our preparations", care to explain? I can't imagine that a comprehensive code review took place for those (unqualified) items of older ground station equipment. Read legacy code written by contractors?
[12:02] <daveake> "Our comprehensive preparations stalled at some incomprehensible code"
[12:03] <daveake> Or "Well, we grepped everything for the word "weekly", and didn't find anything"
[12:04] <daveake> Could be worse ... https://www.zerohedge.com/news/2019-04-07/china-grounds-boeing-787s-after-gps-y2k-bug-strikes
[12:08] <Ian_> I noticed that dbrooke mentioned a negative date on his Jupiter GPS earlier/yesterday, that suggested a "signed integer" rollover type of event, but I haven't been able to rationalise that with an August 1963 date as a multiple of 7168 days. It sounded like attempted cleverness gone wonk.
[12:19] <TimMc_> datetime? (curls up into a ball and rolls away)
[12:20] <dbrooke> that was from gpsmon reading from gpsd so potentially a few places where some kind of reinterpretation could go wrong, I didn't look at the NMEA directly from the device
[12:21] <TimMc_> I like how it it seems like an engineer is replying on Vaisala's twitter
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[14:19] <SpacenearUS> New vehicle on the map: 03MotoG5_Chase - 12https://tracker.habhub.org/#!qm=All&q=MotoG5_Chase
[14:21] <SpacenearUS> New vehicle on the map: 034X6UB-11 - 12https://tracker.habhub.org/#!qm=All&q=4X6UB-11
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[14:42] <SpacenearUS> New vehicle on the map: 03PHONEAPP_Chase - 12https://tracker.habhub.org/#!qm=All&q=PHONEAPP_Chase
[15:05] <SpacenearUS> New position from 03U3S31 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=U3S31
[15:08] Nick change: en4rab_ -> en4rab
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[16:20] <SpacenearUS> New position from 03E1 after 0310 days silence - 12https://tracker.habhub.org/#!qm=All&q=E1
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[17:23] <Ian_> Many thanks on that heads up dbrooke.
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[18:41] <SpacenearUS> New position from 03U3B-25 after 0315 hours silence - 12https://tracker.habhub.org/#!qm=All&q=U3B-25
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[23:15] <SpacenearUS> New vehicle on the map: 03bmckt1 - 12https://tracker.habhub.org/#!qm=All&q=bmckt1
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[00:00] --- Tue Apr 9 2019