Research & CAL/VAL

Division

Ground Segment

Development Team

Satellite

Operation Team

Satellite Development & Planning Team

+ Application

- Operation

해양위성센터 동해기지국(울진) ▶

- 천리안 해양위성 1호 및 국외위성 수신/처리/배포

- 천리안 해양위성 수신안테나(4.5m), NOAA 수신안테나(1.2m),

MODIS&NPP 수신안테나(2.4m)

◀ 해양위성센터 안테나운영동(부산)

- 2019년 12월 완공 예정

- 천리안 해양위성 1호 및 2호 수신/처리/배포

- 지상 2층, 약 300평 규모

- 천리안 해양위성 1호 및 2호 동시 수신안테나

(9m, 레이돔 12m)

- 전산실, 상황실, 자료처리실, 브리핑실 등

위성운영 중심 인프라

GOCI Lifetime

Official GOCI/COMS operational lifetime is 7 years from the beginning of GOCI

normal on-orbit operation and data distribution service (April 1, 2011).

GOCI/COMS operational lifetime will be extended until March 2021(TBD).

GOCI and GOCI-II can acquire data simultaneously for about one year.

• Near Real-time distribution service to Gov. user

• Web-based data service(http://kosc.kiost.ac.kr)

• Open access for research/public use

• Public services using Portal

• Mirror site on NASA OBPG

• Level 1B : same as KOSC(HDF-EOS5 format)

• Level 2 : processed by NASA Seadas(NASA format)

• User SW : GDPS 2.0

GOCI Data Service

The GOCI-II is scheduled to be launched in Mar. 2020.

Land Products

Diffuse attenuation coefficient

Secchi disk depth

Optical Properties

Water Quality Products

Ocean Products Atmospheric Products

SOC

@KARI LV2

Raw

Signal

Raw,LV0,

LV0C, LV1A,

LV1B

LV0

LV1A

LV1B

LV2

Quality Info

Validation Info

Raw

LV0

LV0C

LV1A

LV1B

LV1B

DCS

Raw FileGeneration

Radiometric Correction

Geometric Correction

DAS

Data Acquisition

LV1B

ODPS

L2 Product

Processing

Algorithm

Management

Data Analysis

PCS

Data Correction

Quality Estimation

DMS

Data Management

Data Distribution

Storage DB External Data Collection

OQMS

Quality

Management

Operation

Management

Mission Plan

Management

NMSC

• Mission Schedule

• Mission Event

• OBT Drift Time

• Star Vector Telemetry

• FDS Data

• Ephemerides File

• Orbit Data (TLE)

• Mission Request

• DPS Channel

Parameter

• GOCI-ll FOV Offset

• Target Star Info

• xRIT Additional Data

Product

Request

Product

- LV1A+geo_info

- LV1B

- LV2

- RGB Complete

Image

xRIT

additional data

GOCI-II Ground Segment System

Data

Log

Control Command

& Status Info

ESC

Level Product

- Raw

Product Request

User LV0

LV1A

Quality Estimation

Result

G2GS is composed of 6 subsystems : data acquisition, data correction, ocean data

processing, data management, precision correction, operation and quality

management.

• Data Analysis Module

GOCI data visualization on snap is working after installing GTBX plug-in.

GOCI L2 and GOCI-II L2 sample data for one slot is shown on it.

GOCI-II Reference Local Area coverage by 12 slots

• Reference Local Area (RLA), 10 images a day

• Full Disk (FD) observation, once a day

GOCI-II Full Disk Area coverage by 235 slots

GOCI-II JOint Ocean reference Network (GI-JOON)

Indonesia (MTCRC) : Ocean monitoring, Cal/Val station

(Standard Criteria)

GOCI-II algorithms are developed based on the GOCI algorithms

Atmospheric correction

• Almost identical to SeaWiFS/MODIS/VIIRS atmospheric correction

• Partially modified

• It employs an alternative aerosol estimation scheme from two-NIR bands by using

spectral relationship of aerosol multiple-scattering reflectance

• For turbid water atmopsheric correction, it estimates NIR water reflectance by using 620

and 709 nm in the iterative scheme

Ocean color algorithms

• Primary ocean color products

• Chl-a (Hu et al., 2012 & Oreilly et al., 2000), CDOM (Siswanto et al., 2011), TSM

(Siswanto et al., 2011), Kd490 (Lee et al., 2005), IOP (QAA), Zsd (Lee et al., 2015)

• Algorithms’ coefficients are adjusted for GOCI-II spectral characteristics with in-situ data

• Employed algorithms can be changed during the IOT period

Preparation of GOCI/GOCI-II data for Climate Data Record

• Inter-comparison between GOCI and other ocean color satellite observations

• Monitoring of multi-year variability of continuous GOCI/GOCI-II products

Algorithm/application of GOCI-II combined with AMI and GEMS (GK-2A &B)

• Three sensors on the same geostationary orbit over wide range of solar and earth radiation

(GEMS: UV-VIS, GOCI-II: VIS-NIR, AMI: VIS-IR)

• KOSC/KIOST in cooperation with NMSC/KMA (AMI operation center) and NIER (GEMS

operation center)

Aerosol Optical Depth(AOD) Analysis

2015.04.15 00:15 UTC