観測[kansoku] observation
観測ヘリコプター[kansokuherikoputaa] observation helicopter
計測[keisoku] measurement
再測量[saisokuryou] resurvey
三角測量[sankakusokuryou] triangulation

実測[jissoku] survey
実測図[jissokuzu] measured map
写真測量[shashinsokuryou] photographic surveying
推測[suisoku] guess
測候所[sokkoujo] weather measurement station

圧観[akkan] highlight
偉観[ikan] magnificent sight
一面観[ichimenkan] one-sided view
厭世観[enseikan] pessimistic view of life
厭世悲観者[enseihikansha] pessimist

価値観[kachikan] sense of values
外観[gaikan] appearance
概観[gaikan] general view
楽観[rakkan] optimism
楽観的[rakkanteki] optimistic