编辑“︁GEO-KOMPSAT-2A”︁

{{Notability Unreferenced|time=2019-05-14T01:18:07+00:00}}
{{unreferenced|time=2019-05-14T01:18:07+00:00}}
{{Infobox spaceflight
| name                  = GEO-KOMPSAT-2A
| image                 = 
| image_caption         = 
| image_size            = 270px
| mission_type          = [[氣象衛星]]
| operator              = [[韩国气象厅]]
| COSPAR_ID             = 2018-100A
| SATCAT                = 
| website               = 
| mission_duration      = 預定10年<br />目前已運作{{For year month day| year=2018| month=12 | day=04}}

| spacecraft_bus        = 
| manufacturer         = [[KARI]]
| launch_mass           = 3,420 公斤
| dry_mass              = 
| payload_mass          = 
| dimensions            = 
| power                 = 

| launch_date           = 2018年12月4日<br />4時37分整 [[UTC]]
| launch_rocket         = [[阿丽亚娜5]] ECA
| launch_site           = 法属圭亚那库鲁3号航天发射区
| launch_contractor     = [[KARI]]
| entered_service       = 

| disposal_type         = <!--Whether the spacecraft was deorbited, decommissioned, placed in a graveyard orbit, etc-->
| deactivated           = <!--when craft was decommissioned-->
| destroyed             = <!--when craft was destroyed (if other than by re-entry)-->
| last_contact          = <!--when last signal received if not decommissioned-->
| decay_date            = <!--when craft re-entered the atmosphere, not needed if it landed-->

| orbit_reference       = [[地心軌道]]
| orbit_regime          = [[地球靜止軌道]]
| orbit_semimajor       = 
| orbit_eccentricity    = 
| orbit_periapsis       = 35786 公里
| orbit_apoapsis        = 35786 公里
| orbit_inclination     = 
| orbit_period          = 
| orbit_RAAN            = 
| orbit_arg_periapsis   = 
| orbit_mean_anomaly    = 
| orbit_velocity        = 
| orbit_longitude       = 東經 128.2°
| orbit_epoch           = 
| orbit_rev_number      = 
| apsis                 = 地
| insignia              = 
}}

'''GK2A'''是韩国[[氣象衛星]]之一，由[[韩国氣象廳]]開發，[[KARI]]製造。於2018年12月4日由[[欧洲航天局]]的[[阿丽亚娜5号]]將其送上軌道，屬於[[地球同步衛星]]。

== 發射 ==
裝載GK2A的[[阿丽亚娜5]]火箭在世界协调时2018年12月4日4時37分於[[法属圭亚那]]库鲁3号航天发射区發射升空。

== 目的 ==
其作用為提供[[韩国]]、[[東亞]]及[[太平洋|西太平洋]]之週邊的[[天氣預報]]、[[颱風]]、[[暴雨]]、[[氣候變化]]的[[觀察]]、[[預測]]等相關之報告，同時負責確保[[船隻]]與[[航空]]的安全以及觀察地球之環境。

=== 成像儀之波段 ===
GK2A內置的高像素紅外線成像儀（AMI）的[[可见光|可視波長]]與[[紅外線|近紅外線]]達3波段，同時內置的[[传感器]]能感應紅外線10至16波段。

{| class="wikitable" style="background-color:#f0f0f0"
|+ GK2A觀察之波段
! [[波长]] || 編號 || 簡稱 || 中心波長<br />(µm) || 赤道帶<br />水平解析度 (km) ||  偵測範疇
|- style="background-color:#ccf"
| style="background-color:#fefefe" rowspan="3" | 可見光
| 1 || V1 || 0.470 || 1 || 植被、氣膠、彩色圖像（藍）
|- style="background-color:#cfc"
| 2 || V2 || 0.509 || 1 || 植被、氣膠、彩色圖像（綠）
|- style="background-color:#fcc"
| 3 || VS || 0.639 || 0.5 || 植被、[[低雲族]]與[[霧]]、彩色圖像（紅）
|- style="background-color:#f8f8f8"
| rowspan="3" | 近紅外線
| 4 || N1 || 0.863 || 1 || 植被、氣膠
|- style="background-color:#f8f8f8"
| 5 || N2 || 1.37 || 2 || 雲相判別
|- style="background-color:#f8f8f8"
| 6 || N3 || 1.61 || 2 || [[云凝结核|雲密度]]半徑範圍
|-
| rowspan="10" | 紅外線
| 7 || I4 || 3.83 || 2 || 低雲族與霧、自然火災
|-
| 8 || WV || 6.21 || 2 || [[對流層]]之[[水蒸氣]]密度
|-
| 9 || W2 || 6.94 || 2 || 對流層至[[中氣層]]之水蒸氣密度
|-
| 10 || W3 || 7.33 || 2 || [[平流層]]與中氣層之水蒸氣密度
|-
| 11 || MI || 8.59 || 2 || 雲相判別、[[二氧化硫]]
|-
| 12 || O3 || 9.62 || 2 || 臭氧含量
|-
| 13 || IR || 10.35 || 2 || 雲圖像、雲頂資訊
|-
| 14 || L2 || 11.23 || 2 || 雲圖像、海面溫度
|-
| 15 || I2 || 12.36 || 2 || 雲圖像、海面溫度
|-
| 16 || CO || 13.29 || 2  || 雲頂高度
|}


{{氣象設備}}
{{太空氣象觀測}}

[[Category:韩国人造衛星]]
[[Category:氣象衛星]]