Me pēhea te whakarite i tētahi Drone mō te Mahere Rererangi
Kua rongonui te mahere rererangi mā te whakamahi i ngā waka rererangi kore (UAV) mō ngā momo hiahia maha, mai i te ruri whenua me te aroturuki kaupapa hanga ki te ahuwhenua tika me te mahere whenua. Ki te whakatauritea ki ngā tikanga tuku iho, he tere ake, he iti ake te utu, ā, he nui ake ngā hua taipitopito e tukuna ana e ngā waka rererangi kore. Heoi, ko te kounga o ngā mahere ka puta mai ka whakawhirinaki nui ki te āhua o te whakatūnga o te waka rererangi kore i mua me te wā e rere ana. Ka matapakihia e tēnei tuhinga ngā mahi nui mō te whakatūnga o tētahi waka rererangi kore mō te mahere rererangi kia tika ai, kia haumaru ai, kia ōrite ai hoki ngā hua.
1. Whakatauhia ngā Whāinga Mahere me ngā Putanga
Ko te taahiraa tuatahi ko te mārama ki ō hiahia mahere. Kei te hiahia koe ki te whakaputa i tētahi orthomosaic (mahere whakaahua kua whakatikatikaina), he tauira 3D, he DSM/DTM (tauira teitei), he tuhinga tirohanga noa rānei? Me rerekē ngā tautuhinga o ia putanga, inā koa mō te teitei o te rere, te taupatupatu o ngā whakaahua, me ngā pūoko e whakamahia ana.
– He mapi whenua ā-ringa mō ngā mahere whenua: arotahi ki te tika o te tūnga me te taupatupatu pumau.
– Ngā tauira hangahanga 3D: me whai koki pupuhi whakarara, he taupatupatu teitei ake, me ngā tauira rere uaua ake.
– Te mahere whenua: me rite te teitei, ā, e tautokona ana e ngā pūwāhi whakahaere whenua (GCP).
Ma te whai i tētahi whāinga mārama, ka taea e koe te whakatau i ngā tawhā rere me ngā taputapu e tika ana.
2. Te Whakarite Taputapu: Te Taraiwa Ārai, te Kāmera, me te Pūhiko
Kāore e pai ana ngā waka rererangi korekore katoa mō te mahere. Ko te mea pai, whakamahia he waka rererangi korekore kei a ia ngā āhuatanga e whai ake nei:
– GPS pumau (he pai ake te RTK/PPK mēnā e wātea ana)
– Kāmera me te taumira tika me ngā mana whakahaere ā-ringa
– Pūmau/gimbal hei pupuri i te koki o te kāmera
– Tautoko tono whakamahere kaupapa (tohu huarahi aunoa)
Tirohia hoki te rite ā-tinana o te waka rererangi:
1. Pūhiko: kia tino kī, kia pai hoki te āhua, inā koa mēnā he maha ngā haerenga (rerenga whakarite) e hiahiatia ana.
2. Porowhita: tirohia mēnā he kapiti, he kino iti rānei ka pā ki te pumau.
3. Pūmanawa: whakahōu ina hiahiatia, engari karohia ngā whakahōutanga ohorere i mua tonu i te mahi nui me te kore whakamātautau.
4. Rokiroki: me nui te kāri mahara, me tere, me ma hoki i ngā kōnae tawhito, kāore e hiahiatia.
3. Te Aromatawai i te Pae me te Whakamahere Mihinare Rererangi
I mua i te rere i te waka rererangi korekore, me tirotiro wawe te rohe:
– Tāutuhia ngā arai: ngā rākau teitei, ngā pou hiko, ngā pourewa, ngā whare rānei.
– Kia tūpato ki ngā āhuatanga o te tohu: ka pā pea ngā wāhi e tata ana ki ngā hanganga whakarewa nunui ki te kāpehu.
– Whakatauhia he wāhi haumaru, whānui hoki mō te rerenga/te taunga.
– Tirohia ngā āhuatanga o te rangi: te hau, te ua, te kohu, me te kaha o te mārama.
Muri iho, ka waihangahia e koe he mahere misioni (mahere rere) mā te whakamahi i tētahi taupānga pēnei i a DJI GS Pro, DJI Pilot/FlightHub, Pix4Dcapture, DroneDeploy, i te pūmanawa rānei kua hangaia mō tō waka rererangi. I tēnei wā, ka whakatakotoria e koe te ara rere aunoa, te teitei, te taupatupatu, me te rohe taupoki.
4. Tautuhia te Teitei Rere me te GSD
He nui te pānga o te teitei o te rere ki ngā taipitopito o te mapi. Ko tētahi tawhā nui i konei ko te Tawhiti Tauira Whenua (GSD), arā, te rahi o ngā pika i runga i te whenua (hei tauira, 2 cm/pika). Ko te iti o te GSD, ko te taipitopito ake o ngā hua, engari ko te nui ake o ngā whakaahua me te wā tukatuka.
Hei tirohanga whānui:
– 60–80 mita: he tino taipitopito mō ngā wāhi iti-waenga
– 100–120 mita: he whānui ake te whānuitanga, ā, he taipitopito tonu mō ngā hiahia rangahau maha
– Neke atu i te 120 mita: he whānui te taupoki, engari he iti ake ngā taipitopito (i runga i ngā ture ā-rohe)
Me whakarite hoki kei te whai koe i ngā ture rere mō te waka rererangi korekore i tō rohe, tae atu ki ngā here teitei mōrahi.
5. Whakatakotoria te Tauira Taupoki me te Tauira Pupuhi
Kia taea ai te tukatuka i te whakaahua hei mapi maeneene, me nui te taupatupatu:
– Taupoki o mua (whakamua): 75–85% (he mea noa mō te orthomosaic)
– Te taupatupatu taha (taha): 65–80%
Mō ngā wāhi he nui ngā taipitopito poutū (ngā whare, ngā pari, ngā rākau), whakanuia te taupatupatu, nā te mea he maha ngā mea teitei e hanga ana i ngā atarangi, ā, ka rerekē te tirohanga. Mō te whakatauira 3D, ka taea te whakanui ake i te taupatupatu ki te 85–90% me te haere tahi me te koki pupuhi whakarara o te 20–35 nekehanga.
Ngā tauira rere e whakamahia pinepinetia ana:
– Mātiti (tapawhā): mō te orthomosaic paerewa
– Matapihi takirua/whakawhitiwhiti: mō ngā wāhi 3D, ngā wāhi uaua rānei
– Ngā pūwāhi ara motuhake: mō ngā pūwāhi motuhake pēnei i ngā piriti, ngā hanganga pourewa rānei
6. Ngā Tautuhinga Kāmera: He rite tonu te mahi ā-ringa
Ko tētahi o ngā kī ki te mahere pai ko te mārama ōrite. Ka taea e te aratau aunoa te whakarerekē i te mārama me te pōuri o ngā whakaahua, ka uaua ai te tuitui.
Whakamahia ngā tautuhinga ā-ringa i ngā wā katoa e taea ai:
– Tere o te kati: he tere rawa kia kore ai e pōuri te tirohanga nā te nekehanga o te hau me te hau (hei tauira, 1/800–1/2000).
– ISO: kia iti rawa te taea (ISO 100–200) hei whakaiti i te haruru.
– Pūwhera: mēnā e tautokona ana e te kāmera, whakamahia he uara waenga (hei tauira, f/4–f/8) hei koi.
– Taurite mā: whakatakotoria (hei tauira, Paki/Kapua) kia ōrite tonu ngā tae.
– Arotahi: raka arotahi (pāwhiri hei arotahi kātahi ka raka) whakaturia rānei ki te mutunga kore mēnā e tika ana.
Ki te tere te huri o te mārama (hei tauira, ngā kapua e neke ana), whakaarohia te whakamahi i te kati me te ISO kia koi tonu ai te whakaahua.
7. Te Tere Rere me te Wā Whakaahua
Mā te rere tere rawa ka pōuri te nekehanga me te nui rawa o te mokowā i waenga i ngā whakaahua. He maha ngā taupānga mahere e tatau aunoa ana i te wā i runga i te taupatupatu me te teitei, engari me whakarite tonu e koe he tika ngā hua.
Hei paearu:
– Ngā hau kaha → whakaitihia te tere kia tau ai
– GSD iti (taipitopito nui) → me nui ake ngā whakaahua, tere iti ake
Me whakarite hoki kei te anga te gimbal ki te nadir (90° ki raro) kia pai ai te āhua o te tirohanga kia iti ai te hē o te tirohanga.
8. Te Whakatikatika, te Kāpehu, me te Maukati Amiorangi
I mua i te tīmatanga o te misioni:
– Taria kia whiwhi te waka rererangi i te tohu amiorangi kaha.
– Me whakarite kei te rite te aratau GPS/RTK (mēnā e wātea ana).
– Whakatikatikahia te kāpehu/IMU ina tika anake (hei tauira, i muri i te haerenga roa, i muri rānei i te whakatūpato). Mēnā ka whakatikatika pinepine rawa i ngā wāhi kāore i te tino pai, ka puta pea he hapa.
Mō ngā hiahia tino tika, whakamahia he waka rererangi me te RTK, ka honoa rānei ki ngā GCP (Ground Control Points) i inehia mā te whakamahi i ngā rangahau GNSS. Ka āwhina ngā GCP ki te whakapai ake i te tika whakapae me te poutū o ngā hua mahere.
9. Tautuhinga Haumarutanga: RTH, Geofence, me te Haumaru-kore
He maha ngā wā ka mahia te mahere i roto i ngā misioni aunoa, nō reira me matua whakarite ngā āhuatanga haumaru:
– Whakatakotoria te teitei Hoki-ki-te-Kāinga (RTH) kia teitei ake i te arai teitei rawa atu o te rohe.
– Kia tika te pūwāhi kāinga.
– Whakahohehia te whakatūpato pākahiko, ā, whakatakotoria he rohe haumaru mō te wā e hoki mai ai.
– Kia mārama ki ngā rohe ārai rere me ngā taiepa whenua e tika ana.
– Whakaritea ngā tikanga mēnā ka ngaro te tohu: mēnā ka rere aunoa te waka rererangi, ka rere pōturi, ka tau rānei.
Hei tāpiri, kia whai kaitirotiro koe mēnā he whānui te wāhi, he uaua rānei ngā āhuatanga, ā, kia mau tonu te rārangi tirohanga (VLOS) kia rite ki ngā ture ā-rohe.
10. Te Whakahaere Rere me te Mana Kounga Raraunga
I te wā e haere ana te kaupapa, kaua e "mātakitaki noa." Whakahaerehia te mana kounga:
– Tirohia mēnā kua tiakina tika te whakaahua.
– Kia tino mohio kei nui rawa te pōuri.
– Kia tūpato mēnā kei te mau tonu te ara rere me te teitei o te waka rererangi.
– Ki te rerekē rawa ngā āhuatanga o te mārama, whakaarohia te tāruarua i tētahi wāhanga o te ara kia ōrite ai te huinga raraunga.
Kia oti te misioni, tirohia wawetia te mahi i te mara. He pai ake te kite i ngā hapa raraunga i a koe e noho ana i te papaanga, kaua e kitea i muri i te hokinga ki te kāinga, ā, me mahi anō i te mahi.
11. Te Whakahaere Raraunga me ngā Tukanga i Muri i te Rererangi (Whakarāpopototanga)
Ahakoa ko te whakatūnga o te waka rererangi korere te kaupapa matua o tēnei tuhinga, ko te wāhanga i muri i te rere te mea e whakatau ana i te hua whakamutunga:
1. Nukuhia ngā raraunga, ā, tāruatia.
2. Whakarōpūtia ngā kōpaki mā te rā me te wāhi.
3. Tukanga i roto i ngā pūmanawa pēnei i a Agisoft Metashape, Pix4Dmapper, RealityCapture, WebODM rānei.
4. Ki te whakamahi koe i te GCP/RTK, whakaurua tika ngā taunga, ā, tirohia te hapa (RMSE).
Kia mahara hoki ki te tuhi i ngā raraunga matua: te teitei o te rere, te taupatupatu, te rangi, me te maha o ngā whakaahua. Ka whai hua ēnei tuhipoka mō ngā mahi ā muri ake nei.
Te Katinga
Ko te whakatū i tētahi waka rererangi korekore mō te mahere rangi ehara i te mea ko te rere noa i te taputapu me te tango i te maha o ngā whakaahua e taea ana. Me whakamahere kaupapa, me whakarite ngā tautuhinga kāmera, me taurite te taunga, me ngā tikanga haumaru tino pai. Mēnā he tika te whakatakotoranga, ka tika ake, ka ma, ka pono ake hoki tō mahere orthomosaic, tauira 3D, mahere whenua rānei ka puta. Mēnā kei te tīmata noa koe, whakamātauria ki tētahi wāhi iti i te tuatahi, arotakehia ngā hua, kātahi ka whakanuia haeretia te tauine o tō kaupapa kia kitea rā anō e koe ngā tawhā rere pai rawa atu mō ō hiahia.
