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SatNOGS: Crowd-sourced satellite operations

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it and in a and the FIL well start building now alone will come um today you will hear a little bit about the Knox uh basically it's a ground control station for the satellites that you might see their or any other satellites probably as you can look and control 1st stuff that you just don't build the expensive piece of space fresh you need the station to actually see what it doesn't give it signals how that's working out Nichols will explain given a warm welcome from the costs with the 2nd or few times the lower body uh so yeah wouldn't about uh start nodes uh before I dive into the the project some the data introductory a bit about who we are what we do in a surety
had some of that stuff if you were in the beginning of the previous talk so why there uh neighbors they Foundation 72 foundation of profit foundation we found it actually to support Sardonyx that in the process other projects that would develop inside the foundation and the mission of the foundation is to advances in use Schumpeter's technologies uh in space so I'm trying to push the boundaries of officers do work the final 4 debate about so the space the and we come from
money easily but please of Oaks uh comes from the Athens hackerspace in Greece defectors pays as you might expect with uh a lot of tools and a lot of the in people coming together with values the ground and by skill it so we have people that are space yes so ideomotor there's uh but also called there's and developers and the and as you will see along the talk sonnets is a project that required so many different schemes in many different kind of people to work on that so that the fact that we have these 1 place 1 physical place to meet really accelerated their the success of the project with so that you may
have had the laterally so why would we started about 2 years ago the in about 6 months after we started we won the Hakodate a prize and that was a big moment for us because it was to the project both in terms of uh financially because it was a financial price uh but also in terms of community uh expanding because it makes the project very well known to certain communities especially the geometry is so space uh hikers so what what's the abroad there
initial idea is that what this is I the picture of objects this the other thousand the satellites especially in the US the orbit then as a pianist playing the previous talk and assume many of you may also be involved in values university or even hackerspace projects to read you sets and satellites in general so uh so this that David B. this cube sets sometimes in the US billing the satellites sometimes they don't focus must be on their guard station on it on the other side of things uh so many other teams of the losses satellite in orbit sometimes don't even have egocentricity took doctorate are sometimes the only they have the resources and expertise to be 1 guard station in the university or in that it plays a uh they're located and just wait for 1 or 2 bias the day to reason that the satellite when the satellites that is above them and that's the problem that everything
like that faces so this is Adagamov Crowell nanosatellites exploded over the last years of this is a item for huge that's another kind of non so the lights but book acute for instance so as you can see this so the trend is that more and more not said later but put into orbit and in most of these cases nobody actually communicates with it and so it's a tip it's pretty much
problem of skating and the idea without biker but then 3 years ago was so what if we could be done and at work what could be
there a network of ground stations and try to solve this problem of they're bitches model accounts smarter and uh see how this works and cow and March the home by how big is that we can be and actually solve the scaling problem to give you a a quick
overview uh when thinking about networks with me about something like this so on the left side of it is the user's which can be people who want to to communicate with satellites that can be on any 1 pretty much but also satellite operates of operators of sense you the network gives use the is to uh right a few ground stations or a lot of gasses around the world and schedule durations for satellites so instead of everyone believe it's own now station in 1 place you have a global network of available ground stations a similar to the to
the cubes that project to you be set we also try to find out what's already there so I believe the global that were grouse this is not in his job because many of many moving parts so which try to see if the other of the bell their bidding open-source of gone station if they software source that we could use other and got station all the networks and the thing to the web services the side of things and forcibly they 1 the 1 many things so for most of their but it's we had on the project there would be much speed everything from scratch and which I had to do it in a modular way so uh you don't have to use the entire stack of Sonics if you want to just observe a satellite you can use of you just be the savage GraphStation but if you have a gas is already you can just like in the network and use the rest of the sort of project the other way around
are so sad because it's a modular project so that the the time of day more do some parts some models of these projects are so it consists of the network side of things of the client which is a software that runs on the ground station itself the data on the gas station and then of course and B which is a and web service that about so go in detail in a bit the so
starting from there at to the ground level that would be there data for a ground station uh another church mother we but everything on this on these real data is of course open source another guide words which I to a typical slow so we used what we decided in a way that can be have parts of of city bring that or the parts of you can easily find in a deep way uh in Estoril and you can either be your own ground station or just using your data that supported by family than a lot of of the but
also 1 of the things that we wanted to let's even added to keep the the cost low but also make it more accessible both in terms of cost but also the how to apply way how do to make it easier for you to be the eigenstates and I will try to keep that boosting we use open source so if you try to be a gas station you don't have to buy any expensive software or rely on a proper right provided the solution so 1st of all way using a high the it's a web the the way about the bailouts but that's the easy way to showcase the construction of steps steps of their of hardware devices but in our case our data so if you go to our highest as you can uh see pictures and videos for easy steps how to beat the gas station or high of courses
stoppages itself we use our publishers do is to be dead design of the parts of the
data free guided IT codes the
you God that's for 4 antennas and that's
sort all the course will select to the reader additional so this is there are the data controller and all of the seats uh uh of course services and all the schematic the center of the ordinary procedures so this is
a photo of a of a ground station on rotate about so you can see this is actually a reference platform but you can use any different kind of set up so platforms based on that either by 3 and there's the other the uh but others said in the beginning it's really modular so if you don't like that you can use it and the Linux PC or are another at the device so that the requirements here is that you we rely on by some men at radio on is for our client software and you can see that the can be really pocketing is more books there you can find easily so what we do
for little a while for the client software where we using also here Roberts research tools to to build a ready by that is so we use the continues degradation of lot from of the labs and we combine that we abides and by John is a project to our simple peak said you dig starts pair of and images which is there before uh very and with the use out of it gorgeous states all all the chains we do on top of the foreground intimates and in the end what you get is a a a a a a lot by 3 e months I with all the Sonics shuffle ready to be a bit less than the Raspberry by 3 uh so we could we have apparently also on 90 beats but those we I to regular users in a more of a stable fashion so
this is some photographs somebody's got stations around the world so uh on the left top 4 is this is the 1 of the top part of the of the rooftop of the hackerspace nonsense R. Levy Indiana Australia California on the left knowledge and in the middle of down is the 1 in the back of and as you can see that 1 is a without the data is just at this time attendant the which is really good for normal weather satellites so you can see a difference kind of ground stations difference attached so what the this sick weaker
uh view of the mop of dancing around the world I come back to to these it later but you can see that uh they're pretty scattered all over the world yeah a so
but now let's go back to their there's good like clouds side of things this this is that uh sentence to be so when we started the project uh 1 of the problem with that is that we in find any a centralized place for information the lights so the only way other than we could have satellites in order to have observations about them to communicate with them I was to just on blogs and websites are firstly I and we decided to create a 1 website that we in the same manner use methodologies to got all that information in 1 place at most 1 of the frequencies of all satellites so right now we have about 200 Brady satellites with information about the readers it that's keeps expanding at a website that gives the possibility that the the 2 so the late operators pretty much doing at this submits a suggestions about new satellite your information for existing satellites that would have a team of moderators that I have that this information uh eventually standards to be also end up to be a place where we gather at the limited that the proliferation decoded the limited that and that's includes that includes not only that aren't that come from sort of but those from other tools I work of the DLM for water freezes and anything that and then the done that come from the satellite projects and also the bosonic scars a public API and correspond to most of you know to predict so to predict users are assigned to be API affects frequency formation for all the satellites yeah and I think we just lost their then median frames so barrier for satellite recently Hey
for the the others had found to be but we have decoded limited other that's not an easy thing to do because they're decoding information for satellites not always easy to find and its satellite may have at own specs without to do that with with think so here is a sort and snippets of article it for the user to the mission but on the left but in a similar manner will cover only golden for alone uh cube set will you be set so we decode there the the limited that she's we know their specific way via satellite to the extent that since the data for thus I would ever to vote that is that like that so we know how to decode them and then where the next project that we're trying to beat the subtree grace and the limited that sports for the satellite so we see to see how this values change across time so let's go to their the net
work this is actually this kid them servation registration to a of that looks like this is the place that all got stations actually connects through that as the API and pushed back all observation but also it's their place where the facts all the observations they need to do the so the goalie stick with at the moment and let me explain what their observation and duration actually contains and we see it in detail in a few slides later that that will uh as an observation contains a wonderful demodulated not all deal and demodulated that and we see some examples of that later yeah here you see is greater versus of adult station and some of the satellite passes for that specific the ground so
that it would give you the the ability to orchestrate and schedule observations that can happen in 2 ways and the 1st ways I let's assume you are interested in 1 specific satellites are gonna later brittle or force for whatever reason you just want to focus on 1 side show you can come to this page you choose your satellite at a time frame and a specific there's meter and you just see what the observation windows available advise got stations on the word for that specific uh passes and you get the forces here this creature that uh would have to ground stations that are available FIL get scared without
specific observation uh the other ways to go if you don't really isolated abrader are you not focused on specific satellites so if you're a guy station operator for is that you can go on the gas station beta then see what the the available the observation windows which are the satellite of actually possible view things at the time in the future and you can get to each 1 of them you can see some method that about their observations so you can decide if it's a good possibility that's too low or too high so 1 and you can schedule of all these individual observations so this is crucial from and
observation on the left you can see on the matter that that the network keeps which speeding that's the same it at other that we show where you are on the top left you can see which is a satellite which is the observer which is the ground station so on on the bottom you can see that the energy of the orbital that that was used for that specific satellites for a specific task I on the top right you can see that there was little deal with a spectrogram so you can have if they couldn't catch of visual and vision of the audio but also you have the waterfall on
which you like with the understanding that innovation actually return they that there out and in some cases we have the demodulated that that if we know uh how did a modelling them for a specific set light so here is the weather satellite launch so we can decode we know that we can decode that data back to so 1 of the
challenges we had with with a network is that as you get a monte from there from the previous slide but it's generation has and all deified that audio if I can be really lots because we die to keep because high quality of course which will decoded later I mean the bottom part is that where we have a where this K problem because we need it so it starts to you that give all the generations we don't be then iterations are so 1 would think would recently date is that we actually utilized it that archive which you probably already know idea that guy race 1 of its the mission statement is that free archive open that up on the that's so we easily uh Street store he did that have to keep on all deify so that way we utilize the we would less but that the guy of office it the
so on the software as if we are the was uh we come back to to the ground station again so others said there's a lot it by within limits and inside that the demands runs value shall butters projects like the family of forces but we also have our own the software freedom by some that orchestrates all the necessary work for the for the ground station and what the blind as its it affects is all the observations for that this begot system that have already been scheduled 1 and work on it starts all the necessary space radius creates or but retain the to the alert screech to become the data are adjusted the figures for double correction and it In end degenerates that was a fun in the audio or any other but that that was back the results to the network on show before are you can use that but the easy way to do that these as it with the other by the but it's a stand-alone project you can use it in a in a shifted and also it has a way in which I do to make it as easy as possible for people to use it because are it's not necessary that an observer of and observator or said later but there is and in fact but they're so so we could goes away with a face that can run the they can be accessed in a local Edward classes you got station with a with the face then yeah do some configuration do some very basic because a very basic functionality and we keep expanding it but so it can be used for both receiving any traffic that's the way the face
of the client of software for sophisticated about specific on-station caused uh a few observations already scheduling on the bottom you can see the uh the logs actually from what happens on the ground station so without actually stating through the mass and you can see what happens and this is discrete
and we are also on the previous talk also so there uh the clan supports the moniker draws I will be the face so you can easily also communicate with the satellite this is the this for the Uber said but in a similar way this can be a configured to be used for other satellites to so if you if you want
attributes of the many things of the many different as acquired for the project uh so depending on your skills you can contribute either but does bilinear got stationed that's true but I think that's a very significant attribution and yeah that which bond then the depending on if you're a developer you can write code for their software projects some of them are written in C summoned Python more so than Python and dumbest could of course for the Web projects any but you can also join our IIsi Maddox tunnel I would have an assembly here in the OpenNI for sector of all but nobody for such a cluster you find as there's Anubis Space Foundation we can do is you have any question either here or later we can this gas and so case even on the assembly problem that were books in more detail thank you thank you very much for both so we still have some time for 2 and a and if you have questions in there are microphones set 0 1 2 3 and 4 in the hall please line up behind them I will call you up and if you leave the forward you and a is over please do this in a quiet manner that we can go on with you a Thank you starting with Mike 1 and I just the simple questions are there any year and legal implications I mean you could listen to centralize that you don't always on any legal implications for you as a ground operator that there wait a that we consider that the where mostly focus on Armatus selected uh frequencies cinema to a bond so you're OK to use and then it's allowed to listen thanks thanks my friend to please I have 2 questions the 1st 1 is a uh what would cost to build 1 complete container will to be that the video that was the top of the parts which is of course but the model is along the 100 and the dollars if you read the whole data and antennas and if I'm already in the middle of Europe in the very dense area and shows us the map ground stations but this is still makes sense to you need more intense in these regions or is it covered you because you may have that might be satellites over your area and at the moment at least the gasses and can only pick 1 at a time so the more the better thank you on my quantity of the axis in the question and can you receive forces sent us and both I mean that the network right now on the network side of things if you if you visit the website you see mostly of course the observations that we use in the satellites are but if you're if you're said later but you can call that person see we can adjust their canonical don't we showed so we can talk to your satellite thanks the microphone to please some so if you're elderly owned station how do you mk also you feed exclusively or how is this scheduled with other users who want to use it and you want to use it in your local amateur of club yeah so a right now the network and you can make an account of the network but if you want to schedule observation you have to be a ground station operator Augustus and over yourself uh would have that use it as an incentive for people to be well states and some not everyone has given observations at this point but in indeed on what if a Soviet
lined up in the top right you can see that there's a network model is a stand-alone mode so if for some reason you want to buy with your station in its stand-alone mode and when we call that the networks just to use it on your own you can do that but once sits on the network mode that means that why it's I'd like any other of the observer the skin you should the microphone 1 please
yeah actually referring to win the 1st set before and this microphone and would be actually cool to the and get some like control um uh and data 2 of those stations and to control satellites of of of approach it's actually do this outside of the amateur radio satellite service so like the downlink is is actually on amateur radio bands like mostly a new channel we chest sometimes it and 15 centimeters of 23 but like actually what about so that a chain of those developers of the satellites also to make uh actually the Appling on them from amateur radio satellite service applications and actually to get this to the Krauts everybody can control the satellites together in the crowd and actually that they don't have to invest in the some time shifts peak control stations and become control stations yeah I'm in that is coming if you have a global and within ISO order that we cover the main status and keep expanding and so on there other sitting kind of uh side of things uh but it's true I mean you don't have to but by time SIFT another commission so as you can utilize the whole network and meeting you can also do it in a sense but change you will you you are the 1 who knows how to communicate without letting what you said let expects it's easier to have a a gas station with a command control software and actually communicate with satellites Thomas Financial Committee Western on the internet have a question um yes 1 user wants to know what is the ideal minimum coverage for the ground stations line 1 in 60 to the with a radius less or more yeah that's the suggested it yet and on the exact number 3 others mother thank you on OK how we don't have any more time with words that but thanks a lot he goes again given normal have thought thank god thank you very much so to just
in time the fact that the act but back pay
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Metadaten

Formale Metadaten

Titel SatNOGS: Crowd-sourced satellite operations
Untertitel Satellite Open Ground Station Network
Serientitel 34th Chaos Communication Congress
Autor Roussos, Nikos
Lizenz CC-Namensnennung 4.0 International:
Sie dürfen das Werk bzw. den Inhalt zu jedem legalen Zweck nutzen, verändern und in unveränderter oder veränderter Form vervielfältigen, verbreiten und öffentlich zugänglich machen, sofern Sie den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen.
DOI 10.5446/34887
Herausgeber Chaos Computer Club e.V.
Erscheinungsjahr 2017
Sprache Englisch

Inhaltliche Metadaten

Fachgebiet Informatik
Abstract An overview of the SatNOGS project, a network of satellite ground station around the world, optimized for modularity, built from readily available and affordable tools and resources.
Schlagwörter Science

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