1. He aha te mita taumata radar? He aha ōna āhuatanga?
Ko te mita taumata radar he momo taputapu e tuku ana i ngā ngaruiti mā roto i tētahi pūihi ki te taumata reo kua inehia, kātahi ka tatau i te taumata wai i roto i te ipu i runga i te wā e pau ana kia tukuna ngā ngaruiti me te whakaata anō.
Ngā Āhuatanga:
① Kāore he nekehanga, kāore he wāhanga tuku, he ine kore-pā, kāore e herea e te pāmahana, te pēhanga, te mamaoa, te hauhautanga, te puehu rānei. He pai mō te ine i te reo matotoru, te reo paitini, te reo kore-paitini rānei, me te reo waikura.
②Kāore he rohe matapo ine o te mita taumata radar, ā, ka tino teitei te tika (taumira). Ka taea e te hapa ine o te taumata wai te eke ki te 1mm (me ngā tauira motuhake e eke ana ki te 0.1mm). Nō reira, ka taea te whakamahi hei taputapu ine arumoni.
2. He aha te kaupapa ine o te mita taumata radar?
Ka whakamahia e te mita taumata radar he oscillator auau-teitei hei whakaputa ngaruiti. Ka arahina te ngaruiti i hangaia e te whakaputa ki te pūihi irahiko mā te arataki ngaru, kātahi ka tukuna ki raro. Ina tūtaki te ngaruiti ki tētahi arai, pērā i te mata wai, ka mimitihia ētahi, ā, ka whakaatahia anō ētahi. Ka inehia te taumata wai mā te ine i te whanaungatanga i waenga i ētahi tawhā o te ngaru i tukuna me te ngaru whakaata mai i te taumata wai.
I tēnei wā, e rua ngā momo matua o ngā mita taumata radar. Ko tētahi momo he auau tukunga pumau, ā, ka ine i te wā haere o te ngaru e tukuna ana me te ngaru whakaata. Kātahi, mā te tukatuka tohu atamai, ka tatau i te teitei o te taumata wai i inehia. Ko te whanaungatanga i waenga i te wā mahi o tēnei momo ine taumata radar me te tawhiti mai i te taumata wai ko: t = 2d/c.
c - Te tere o te horapa o te ngaru hikohiko, c = 300000 km/s;
d - Te tawhiti i waenga i te taumata reo i inehia me te ine, i roto i ngā mita;
t - Te wā mai i te wā e tukuna ana e te pūoko ngā ngaru hikohiko tae noa ki te whiwhinga i ngā ngaru hikohiko whakaata, S.
Ko tētahi atu momo e ine ana i te rerekētanga auau i waenga i te ngaru e tukuna ana me te ngaru e whakaatahia ana, ā, ka hurihia tēnei rerekētanga auau hei tohu hiko e ōrite ana ki te taumata wai e inehia ana. Ehara te auau tukunga o tēnei momo ine taumata wai i te auau pumau engari he auau whakarerekētanga pumau-kaha.
Wā tuku: Hakihea-03-2025