Tsis paub "Satellite Rain": Tshaj 500 Starlink LEO Satellites Poob rau Hnub Ci Kev Ua Si

Qhov xwm txheej: Los ntawm Sporadic Losses mus rau qhov poob

Qhov loj deorbiting ntawm Starlink's LEO satellites tsis tshwm sim sai sai. Txij li thaum qhov kev pab cuam pib pib xyoo 2019, kev poob satellite tau pib tsawg heev (2 hauv 2020), raws li qhov xav tau ntawm cov nqi qis. Txawm li cas los xij, 2021 pom qhov nce siab heev (78 poob), ua raws li qib siab (99 hauv 2022, 88 hauv 2023). Qhov kev kub ntxhov siab tshaj plaws hauv 2024 nrog 316 satellites hlawv - triple xyoo dhau los cov nuj nqis - suav nrog tag nrho 583 poob, sib npaug ~ 1 satellite poob txhua hnub lossis 1 ntawm 15 tsis ua tiav nws txoj haujlwm.

Hnub Ci Kev Ua Haujlwm: Qhov Tsis Pom Kev Ua Phem

NASA kev tshawb fawb tau lees paub qhov sib txuas ncaj qha ntawm satellite deorbiting thiab hnub ci voj voog. Lub 2019 tso tawm coincided nrog hnub ci yam tsawg kawg nkaus, tab sis raws li lub hnub ci kev ua si intensified, atmospheric luag ntawm 340-550km orbits nce los ntawm> 50% thaum lub sij hawm geomagnetic cua daj cua dub. Qhov no tshwm sim thaum:

1. Sunspot-triggered solar flares/coronal mass ejections bombard Earth
2. Geomagnetic cua daj cua dub cua sov thiab nthuav cov huab cua sab saud
3. Expanded cua tsub kom cab, ua rau orbital lwj

Paradox: Tsis muaj cua daj cua dub ua pov thawj Deadlier

Contrary to expectations, 70% ntawm poob tshwm sim thaum lub sij hawm nruab nrab / tsis muaj zog geomagnetic cua daj cua dub. Cov xwm txheej ntev ntev (hnub dhau mus / lub lis piam) maj mam txo qis lub voj voog dhau qhov kev rov qab los, tsis zoo li cov cua daj cua dub loj tab sis luv luv. Ib qho piv txwv tseem ceeb: 40 ntawm 49 Starlink satellites tau tsim tawm thaum Lub Ob Hlis 2022 succumbed rau cov cua daj cua dub tsis muaj zog.

Tsawg-Orbit Tradeoffs

Thaum Starlink's 550km orbits pab kev sib txuas lus qis qis, lawv qhov sib thooj rau lub ntiaj teb:

1. Txwv kev ua haujlwm lifespan rau ~ 5 xyoo (vs. ISS's 400km orbit)
2. Exacerbates luag cov teebmeem thaum lub hnub ci maxima
3. Tshwj xeeb tshaj yog muaj kev phom sij rau kev sim satellites ntawm 210 km qhov siab

Kev Sib Tw Yav Tom Ntej

Nrog> 6,000 Starlink satellites tam sim no orbiting thaum lub hnub ci siab tshaj plaws-ib qho keeb kwm confluence-cov kws tshawb fawb ceeb toom ntawm:

1. Accelerated satellite attrition
2. Muaj peev xwm ozone depletion los ntawm txhuas oxide emissions thaum lub sij hawm reentry SpaceX mitigates poob los ntawm kev xa rov qab sai sai thiab automated deorbit raws tu qauv, tab sis hnub ci lub voj voog resilience tseem yog ib qho tseem ceeb ntawm kev lag luam thoob plaws.

Xaus

Qhov kev tshwm sim no qhia txog qhov tseem ceeb ntawm tib neeg cov thev naus laus zis thiab qhia txog qhov xav tau rau LEO qhov kev tsim qauv uas suav nrog lub hnub ci kev cuam tshuam.

Chengdu Concept Microwave Technology CO., Ltd yog lub chaw tsim khoom lag luam ntawm 5G / 6G RF Cheebtsam rau kev sib txuas lus satellite hauv Suav teb, suav nrog RF lowpass lim, highpass lim, bandpass lim, notch lim / band nres lim, duplexer, Fais fab divider thiab directional coupler. Tag nrho lawv tuaj yeem kho raws li koj qhov kev xav tau.

Txais tos rau peb lub vev xaib:www.concept-mw.comlos yog hu rau peb ntawm:sales@concept-mw.com