Izindlela zokubona umkhathi
Izindlela eziyinhloko zokutholwa komkhathi yilezi: indlela yomsindo we-radar ye-microwave, indlela yomsindo we-airborne noma yerokhethi, ibhaluni elikhalayo, i-remote sensing yesathelayithi, kanye ne-LIDAR. I-radar ye-Microwave ayikwazi ukubona izinhlayiya ezincane ngenxa yokuthi ama-microwave athunyelwa emkhathini angamagagasi angamamilimitha noma amasentimitha, anobude bamaza amade futhi awakwazi ukuxhumana nezinhlayiya ezincane, ikakhulukazi ama-molecule ahlukahlukene.
Izindlela zokukhala emoyeni nezamarokhethi zibiza kakhulu futhi azikwazi ukubonwa isikhathi eside. Nakuba izindleko zamabhaluni anomsindo ziphansi, zithinteka kakhulu isivinini somoya. Inzwa yesathelayithi ingakwazi ukubona umkhathi womhlaba ngezinga elikhulu kusetshenziswa i-on-board radar, kodwa ukulungiswa kwendawo kuphansi. I-Lidar isetshenziselwa ukuthola amapharamitha womkhathi ngokukhipha i-laser beam emkhathini nokusebenzisa ukuxhumana (ukuhlakazeka nokumunca) phakathi kwama-molecule asemkhathini noma ama-aerosol kanye ne-laser.
Ngenxa yokuqondisa okuqinile, ubude begagasi obufushane (igagasi le-micron) kanye nobubanzi be-pulse obuncane be-laser, kanye nokuzwela okuphezulu kwe-photodetector (ishubhu le-photomultiplier, umtshina we-photon owodwa), i-lidar ingafinyelela ukunemba okuphezulu kanye nokutholwa kokucaca okuphezulu kwendawo kanye nesikhashana komkhathi. imingcele. Ngenxa yokunemba kwayo okuphezulu, ukulungiswa okuphezulu kwendawo kanye nesikhashana kanye nokuqapha okuqhubekayo, i-LIDAR ithuthuka ngokushesha ekutholeni ama-aerosols asemkhathini, amafu, ukungcola komoya, izinga lokushisa lomoya kanye nesivinini somoya.
Izinhlobo ze-Lidar ziboniswa etafuleni elilandelayo:
Izindlela zokubona umkhathi
Izindlela eziyinhloko zokutholwa komkhathi yilezi: indlela yomsindo we-radar ye-microwave, indlela yomsindo we-airborne noma yerokhethi, ibhaluni elikhalayo, i-remote sensing yesathelayithi, kanye ne-LIDAR. I-radar ye-Microwave ayikwazi ukubona izinhlayiya ezincane ngenxa yokuthi ama-microwave athunyelwa emkhathini angamagagasi angamamilimitha noma amasentimitha, anobude bamaza amade futhi awakwazi ukuxhumana nezinhlayiya ezincane, ikakhulukazi ama-molecule ahlukahlukene.
Izindlela zokukhala emoyeni nezamarokhethi zibiza kakhulu futhi azikwazi ukubonwa isikhathi eside. Nakuba izindleko zamabhaluni anomsindo ziphansi, zithinteka kakhulu isivinini somoya. Inzwa yesathelayithi ingakwazi ukubona umkhathi womhlaba ngezinga elikhulu kusetshenziswa i-on-board radar, kodwa ukulungiswa kwendawo kuphansi. I-Lidar isetshenziselwa ukuthola amapharamitha womkhathi ngokukhipha i-laser beam emkhathini nokusebenzisa ukuxhumana (ukuhlakazeka nokumunca) phakathi kwama-molecule asemkhathini noma ama-aerosol kanye ne-laser.
Ngenxa yokuqondisa okuqinile, ubude begagasi obufushane (igagasi le-micron) kanye nobubanzi be-pulse obuncane be-laser, kanye nokuzwela okuphezulu kwe-photodetector (ishubhu le-photomultiplier, umtshina we-photon owodwa), i-lidar ingafinyelela ukunemba okuphezulu kanye nokutholwa kokucaca okuphezulu kwendawo kanye nesikhashana komkhathi. imingcele. Ngenxa yokunemba kwayo okuphezulu, ukulungiswa okuphezulu kwendawo kanye nesikhashana kanye nokuqapha okuqhubekayo, i-LIDAR ithuthuka ngokushesha ekutholeni ama-aerosols asemkhathini, amafu, ukungcola komoya, izinga lokushisa lomoya kanye nesivinini somoya.
Umdwebo wohlelo lomgomo we-radar yokulinganisa ifu
Ungqimba lwamafu: ungqimba lwamafu oluntanta emoyeni; Ukukhanya okukhishiwe: i-beam ehlanganisiwe yobude obuthile bobude; I-Echo: isignali ehlakazekile ekhiqizwa ngemva kokudlula ungqimba lwamafu; Isisekelo sesibuko: indawo elinganayo yesistimu yesibonakude; Isici sokutholwa: idivayisi kagesi wesithombe esetshenziselwa ukwamukela isignali ye-echo ebuthaka.
Uhlaka olusebenzayo lwesistimu ye-radar yokukala kwamafu
I-Lumispot Tech amapharamitha wobuchwepheshe ayinhloko wesilinganiso samafu i-Lidar
Isithombe Somkhiqizo
Isicelo
Umdwebo Wesimo Semikhiqizo Esebenzayo
Isikhathi sokuthumela: May-09-2023