I kēia manawa, me ka holomua ʻana o StarLink, Telesat, OneWeb a me AST's satellite constellation plan deployment plans, ke piʻi hou nei nā kamaʻilio ukali haʻahaʻa haʻahaʻa. Ke piʻi nui nei ka leo o ka "hoʻohui" ma waena o nā kamaʻilio ukali a me nā kelepona kelepona honua. Manaʻo ʻo Chen Shanzhi ʻo ke kumu nui o kēia ka holomua ʻenehana a me nā loli i ka noi.
Ma ke ʻano o ka ʻenehana, hoʻokahi ka holomua o ka ʻenehana hoʻolele ukali, me nā hana ʻenehana subversive e like me "hoʻokahi pua me nā satellite lehulehu" a me ka hana hou ʻana; ʻo ka lua ka holomua o ka ʻenehana hana satellite, me ka holomua o nā mea waiwai, ka lako mana, a me ka ʻenehana hana; ʻO ke kolu o ka ʻenehana kaapuni hoʻohui ʻia ʻO ka holomua o nā satelite, miniaturization, modularization, a me ka hoʻohui ʻana o nā satelite, a me ka hoʻonui ʻana i ka hiki ke hana ma luna o ka papa; ʻo ka hā o ka holomua o ka ʻenehana kamaʻilio. Me ka hoʻomohala ʻana o 3G, 4G, a me 5G, nā antenna nui, ka nalu millimeter Me ka holomua o ke ʻano a pēlā aku, hiki ke hoʻohana ʻia ka ʻenehana kamaʻilio kelepona paʻa honua i nā satelite.
Ma ka ʻaoʻao koi, me ka hoʻonui ʻia ʻana o nā noi ʻoihana a me nā hana kanaka, hoʻomaka nā mea maikaʻi o ke kamaʻilio satellite ka uhi honua a me ka uhi ākea. I kēia lā, ua uhi ʻia ka ʻōnaehana kamaʻilio kelepona paʻa honua ma mua o 70% o ka heluna kanaka, akā ma muli o nā kumu ʻenehana a me ka hoʻokele waiwai, uhi wale ia i ka 20% o ka ʻāina, ʻo ia wale nō ma kahi o 6% e pili ana i ka ʻili o ka honua. Me ka hoʻomohala ʻana o ka ʻoihana, ka mokulele, ka moana, ka lawaiʻa, ka ʻaila, ka nānā ʻana i ke kaiapuni, nā hana ma waho o ke alanui, a me ka hoʻolālā aupuni a me nā kamaʻilio pūʻali koa, a me nā mea ʻē aʻe.
Manaʻo ʻo Chen Shanzhi ʻo ka hoʻopili pololei ʻana o nā kelepona paʻa i nā satelite ʻo ia ka mea e komo nā kamaʻilio satellite i ka mākeke mea kūʻai mai ka mākeke noi ʻoihana. "Akā naʻe, he mea lapuwale ke ʻōlelo ʻana hiki iā Starlink ke hoʻololi a hoʻololi paha i ka 5G." Ua kuhikuhi ʻo Chen Shanzhi he nui nā palena o ka launa satellite. ʻO ka mea mua, ʻo ka uhi pono ʻole o ia wahi. Hiki i ʻekolu mau kiʻekiʻe orbit synchronous satellite ke uhi i ka honua holoʻokoʻa. He mau haneli orbit haʻahaʻa e neʻe me ka wikiwiki kiʻekiʻe e pili ana i ka honua a hiki ke uhi like. Nui ʻole nā wahi no ka mea ʻaʻohe mea hoʻohana. ; ʻO ka lua, ʻaʻole hiki i nā hōʻailona ukali ke uhi i loko a me waho i uhi ʻia e nā ala a me nā ululāʻau mauna; ʻO ke kolu, ka miniaturization o satellite terminals a me ka contradiction ma waena o antennas, o ka oi aku ka poʻe ua lilo i maʻa i ka i kūkuluʻia-i loko o ka maʻamau kelepona kelepona (mea hoʻohana 'aʻohe manaʻo), Ka mea kūʻai aku i kēia manawa ukali kelepona hele i ka waho antenna; ʻO ka hā, ʻoi aku ka haʻahaʻa o ka maikaʻi spectral o ke kamaʻilio ukali ma mua o ke kamaʻilio kelepona paʻalima. ʻOi aku ka maikaʻi o ka spectrum ma luna o 10 bit/s/Hz. ʻO ka mea hope loa, a ʻo ka mea nui loa, no ka mea e pili ana i nā loulou he nui e like me ka hana ukali, ka hoʻokuʻu ukali, nā mea hana honua, ka hana ukali a me ka lawelawe, ke kūkulu ʻana a me ka hana a me ka mālama ʻana o kēlā me kēia ukali kamaʻilio he ʻumi mau manawa a i ʻole haneli mau manawa o ka honua. kahua kahua, no laila e piʻi maoli ka uku kamaʻilio. ʻOi aku ka kiʻekiʻe ma mua o nā kamaʻilio kelepona honua 5G.
Ke hoʻohālikelike ʻia me ka ʻōnaehana kelepona kelepona paʻa honua, ʻo nā ʻokoʻa ʻenehana nui a me nā pilikia o ka ʻōnaehana kamaʻilio satelite penei: 1) ʻOkoʻa nā ʻano hoʻolaha o ke kahawai ukali a me ke kahawai terrestrial, he lōʻihi ka hoʻolaha ʻana o ka satellite. nui ka poho o ke ala hoolaha hoailona, a nui ka lohi o ka lawe. Ka lawe ʻana i nā pilikia i ka hoʻopili kālā, ka pilina manawa a me ka hoʻolālā hoʻouna; 2) ʻO ka neʻe ʻana o ka satellite kiʻekiʻe, e hoʻokau i ka hana ʻana o ka manawa, ka hoʻoponopono ʻana i ka manawa (Doppler effect), ka hoʻokele mobility (ka hoʻololi pinepine ʻana a me ka hoʻololi inter-satellite), modulation Demodulation hana a me nā pilikia ʻē aʻe. No ka laʻana, he mau haneli mau mika wale nō ke kelepona hele a hiki i ka pae kilomika mai kahi kahua kahua kahua, a hiki i ka 5G ke kākoʻo i ka neʻe ʻana o ka wikiwiki o 500km/h; oiai he 300 a hiki i ka 1,500km ka mamao o ka ukali haahaa mai ke kelepona hele honua, a e nee ana ka ukali ma kahi o 7.7 a 7.1km/s pili i ka honua, oi aku ma mua o 25,000km / h.
Ka manawa hoʻouna: Dec-20-2022
