Hi everyone, I am one of Jorge's google summer of code mentors. He is working on an extension of the OrbitDeterminator with this idea set[0]. I will answer more in between your text, but as a... tl;dr: We would like to coordinate a team event when you and we are capturing the same satellite but with your optical and our radio frequency pseudoranging methods, so that we will be able to compare the results and also to combine both ways to increase precision :). [0] https://summerofcode.withgoogle.com/projects/#5950636626018304 On Sat, Apr 28, 2018 at 12:14 PM, Björn Gimle via Seesat-l < seesat-l_at_satobs.org> wrote: > Hello Jorge ! > An open source satellite program might be useful , but otherwise I agree > with Charles Phillips. And add ANY decaying satellite, where a good > atmospheric model could be useful with "regular" obs. Regular obs are > otherwise the least of problems. > That is also a great idea. For now, we have to concentrate on the tasks within the google summer of code proposal. He has 3 months and you all know how difficult it is when the requirements are starting to creep :). For now, the startup task is to find different observation input formats of objects in Earth' orbit and beyond especially of databases that are regularly updated. So that is why we found your website. The OrbitDeterminator is meant to find the orbital elements of cubesats and other satellites that we try to track with our ground stations. We don't do that optically, we use several stations to receive the rf-signals and try to determine the EM-signal's origin by trilateration (pseudoranging). We still don't know how "good" we are so we discussed to evaluate that with another tracking source of the same satellite, and we would like to be able to do that with your optical observations. > > How about inaccurate obs on a single pass, or single obs on multiple days > that just MIGHT be of the same object, and/or checking for possible matches > to known very old elsets ? > Old sets are welcome to check the code of course. If you could provide that, we would be more than happy to get them. We would then of course provide our results back to the community to compare the qualiy between ours and yours. > > I was considering contributing a few obs, but ISS is invisible to me now, > NOAA 18 is too early in my twilight, and 17+19 too late for my social life. > That is a great offer! I would just ask you to wait for it a bit. We intend to have a tracking session at the end of the mentioned 3months coding time. We will use our stations by then to record fresh data for the purpose of evaluation. And THEN we would like to invite you to join in a collective and organized satellite observation of the ISS and NOAAs, so that we have data sets by our pseudoranging and your optical observation. This will mean we will have do coordintae this effort a bit to be able to get data of the satellite in the same range of let's say the same hours. This is why we asked if people here are regularly observing them so that we could plan this :). We would like to have this a team event with you and us observing together. One night, at least two ways of observation and in the end, there are results under open-source conditions we all can use as we like it :). What do you still say? > > /Björn > Best regards, Andreas -- w: www.aerospaceresearch.net t: http://twitter.com/andreashornig _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Sun Apr 29 2018 - 18:50:12 UTC
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