Abokai, a Ranar Cosmonautics, ƙaramin sabar mu ta yi nasarar tashi zuwa cikin stratosphere! A lokacin da ake cikin jirgin, uwar garken da ke cikin balloon stratospheric ta rarraba Intanet, yin fim da kuma watsa bayanan bidiyo da na'urar daukar hoto zuwa kasa. Kuma ba za mu iya jira don gaya muku yadda duk abin ya faru da abin mamaki akwai (da kyau, menene za mu yi ba tare da su ba?).
Ƙananan bayanan baya da hanyoyin haɗi masu amfani ga waɗanda suka rasa komai:
- A post game da a cikin stratosphere (wanda muka ci karo da shi a aikace yayin ƙaddamarwa).
- Yadda muka yi"»aikin - don masu sha'awar batsa na geek, tare da cikakkun bayanai da lambar.
- aikin, inda zai yiwu a sa ido kan motsin binciken da na'urar daukar hoto a ainihin lokacin.
- tsarin sadarwar sararin samaniya da muka yi amfani da su a cikin aikin.
- Rubutu ƙaddamar da uwar garken a cikin stratosphere.
Tun da da gaske muna son ƙaddamar da ranar Cosmonautics kuma mun sami izinin yin amfani da sararin samaniya a wannan ranar, dole ne mu dace da yanayin. Kuma don kada iska ta busa balloon stratospheric fiye da iyakokin yankin da aka yarda, dole ne mu iyakance tsayin hawan - maimakon 30 km mun tashi zuwa 22,7. Amma wannan ya riga ya zama stratosphere, kuma kusan ninki biyu kamar yadda jiragen fasinja ke tashi a yau.
Haɗin Intanet tare da balloon stratospheric ya tsaya tsayin daka a cikin jirgin. An karɓi kuma an nuna saƙon ku, kuma mun cika kowane ɗan dakata da magana daga tattaunawar Gagarin da Duniya shekaru 58 da suka gabata :)
Dangane da telemetry, yana -60 0C a waje, kuma a cikin akwatin hermetic ya kai -22 0C, amma komai yayi aiki da ƙarfi.
Zane na canje-canje a cikin zafin jiki (nan da gaba akan sikelin X, ana nuna dubun mintuna):
An shigar da wani na'urar watsa mai saurin dijital ta gwaji akan jirgin. Wannan shine ƙoƙarinmu na yin Wi-Fi mai sauri, kuma ba mu shirye mu bayyana cikakkun bayanai na ƙirar sa ba tukuna. Da wannan mai watsawa muna son watsa bidiyo akan layi. Kuma lalle ne, duk da gajimare, mun sami siginar bidiyo daga GoPro a kan jirgin stratospheric balloon a nesa na har zuwa 30 km. Amma da aka karɓi bidiyon a cibiyar kulawarmu, ba zai yiwu a watsa shi zuwa Intanet a ƙasa ba ... Yanzu za mu gaya muku dalilin da ya sa.
Nan ba da jimawa ba za mu nuna faifan bidiyo na jirgin daga kyamarori a cikin jirgi, amma a yanzu kuna iya kallon rikodin ta kan layi daga binciken.
Babban abin mamaki yana jiranmu: ƙarancin aikin modem na 4G a cikin MCC ɗin mu, wanda ya sa ba zai yiwu a watsa bidiyo akan layi ba. Ko da yake binciken ya samu nasarar karba da aika sakwanni ta Intanet, uwar garken ta karbe su - mun sami tabbacin sabis daga gare ta kuma muka ga an nuna su a kan allo ta hanyar watsa shirye-shiryen bidiyo. Muna da damuwa game da sadarwa tare da tauraron dan adam da watsa sigina zuwa Duniya, amma babu wanda ya yi tsammanin irin wannan kwanton bauna cewa Intanet ce ta wayar hannu ta 4G za ta zama hanyar haɗin gwiwa mai rauni.
Kuma ba a cikin wasu jeji ba, amma ba da nisa da Pereslavl-Zalessky, a cikin yankin da, bisa ga MTS da taswirar MegaFon, an rufe shi da 4G. A cikin wayar hannu ta MCC akwai na'ura mai ba da hanya tsakanin hanyoyin sadarwa na Kroks ap-205m1-4gx2h, wanda aka sanya katin SIM guda biyu a ciki, wanda ya kamata ya taƙaita zirga-zirgar da ke kan su don mu iya watsa bidiyo gabaɗaya zuwa Intanet. Har ma mun shigar da eriya ta waje tare da riba 18 dB. Amma wannan kayan aikin ya yi aiki da banƙyama. Sabis na tallafi na Kroks zai iya ba mu shawara mu loda sabuwar firmware, amma wannan bai taimaka ba, kuma saurin katunan SIM guda biyu na 4G ya zama mafi muni fiye da saurin katin SIM ɗaya a cikin modem na USB na yau da kullun. Don haka, idan za ku iya gaya mani wane yanki na kayan aiki ya fi kyau don tsara watsa bayanai tare da taƙaita tashoshi na 4G na gaba, rubuta a cikin sharhi.
Ƙididdigar yanayin mu ya zama daidai, babu wani abin mamaki. Mun yi sa'a, balloon stratospheric ya sauka a kan ƙasa mai laushi mai nisan mita 10 daga tafki da kilomita 70 daga wurin ƙaddamarwa. Hoton nesa na GPS:
Kuma wannan shine yadda saurin tashi na tsaye na balloon stratospheric ya canza:
Gaskiya ne, ɗayan nunin biyun bai tsira daga saukowa ba (eh, akwai biyu daga cikinsu, kamar kyamarori na GoPro; kwafi hanya ce mai kyau don ƙara dogaro); a cikin bidiyon zaku iya ganin yadda ya tafi cikin ratsi kuma ya juya. kashe. Amma duk sauran kayan aikin sun tsira daga saukarwa ba tare da matsala ba.
Ƙarshe akan gwajin da ingancin sadarwar Intanet.
Yadda uwar garken ke aiki ya kasance kamar haka: a shafin saukarwa zaka iya aika saƙon rubutu zuwa uwar garken ta hanyar fom. An watsa su ta hanyar ka'idar HTTP ta hanyar tsarin sadarwar tauraron dan adam mai zaman kanta guda 2 zuwa kwamfutar da aka dakatar a karkashin balloon stratospheric, kuma tana watsa wannan bayanan zuwa duniya, amma ba ta hanyar tauraron dan adam ba, amma ta hanyar tashar rediyo. Don haka, mun fahimci cewa uwar garken gabaɗaya tana karɓar bayanai, kuma tana iya rarraba Intanet daga stratosphere. A kan wannan shafin saukarwa, an nuna jadawalin jirgin saman balloon stratospheric, kuma an sanya alamar karɓar kowane saƙon ku. Wato, zaku iya bin hanya da tsayin sabar “sky-high uwar garken” a ainihin lokacin.
Gabaɗaya, mahalartanmu sun aika saƙonni 166 daga shafin saukarwa, wanda 125 (75%) an samu nasarar isar da su zuwa uwar garken. Yawan jinkiri tsakanin aikawa da karɓa ya yi girma sosai, daga 0 zuwa 59 seconds (matsakaicin jinkiri 32 seconds).
Ba mu sami kyakkyawar alaƙa tsakanin tsayi da matakin latency ba:
Daga cikin wannan jadawali a bayyane yake cewa matakin jinkiri bai dogara ta kowace hanya ba akan nisa daga wurin harba, wato, da gaske mun watsa sakonninku ta tauraron dan adam, ba daga kasa ba:
Babban mahimmanci daga gwajin mu shine cewa zamu iya karba da rarraba siginar Intanet daga balloons na stratospheric, kuma irin wannan makirci yana da hakkin ya wanzu.
Kamar yadda kuka tuna, mun yi alkawarin kwatanta hanyoyin sadarwa na Iridium da GlobalStar (ba mu taɓa samun modem na Messenger akan lokaci ba). Zaman lafiyar aikinsu a latitudes ɗinmu ya zama kusan iri ɗaya. Sama da gajimare, liyafar ta tsaya tsayin daka. Abin takaici ne cewa wakilan tsarin "Manzo" na gida sun bincika kuma sun shirya wani abu a can, amma ba su iya samar da wani abu don gwaji ba.
Shirye-shirye na nan gaba
Yanzu, muna shirin aiki na gaba, ma fi rikitarwa. A halin yanzu muna aiki akan ra'ayoyi daban-daban, alal misali, ko yakamata mu tsara sadarwar laser mai sauri tsakanin balloons na stratospheric guda biyu don amfani da su azaman masu maimaitawa. A nan gaba, muna so mu ƙara yawan wuraren samun dama da kuma tabbatar da tsayayyen saurin haɗin Intanet har zuwa 1 Mbit / sec a cikin radius na 100-150 km, ta yadda a gaba ya ƙaddamar da matsaloli tare da watsa bidiyon kan layi zuwa Intanet. ba zai ƙara tashi ba.
source: www.habr.com