Korea Multi-Purpose Satellite (KOMPSAT)
Source: KARI/KASA official materials and public reports
Website: https://cislunarspace.cn
Overview
The Korea Multi-Purpose Satellite (KOMPSAT) series is South Korea's Earth observation satellite program, developed and operated by the Korea Aerospace Research Institute (KARI). The KOMPSAT series includes multiple optical remote sensing satellites and synthetic aperture radar (SAR) satellites, providing South Korea with high-resolution Earth observation capabilities.
Development History
KOMPSAT-1 (Arirang-1)
- Launch date: December 1999
- Primary payload: Panchromatic camera with 6.6 m resolution
- Primary applications: Natural resource survey, environmental monitoring
KOMPSAT-2 (Arirang-2)
- Launch date: July 2006
- Primary payload: Panchromatic multispectral camera with 1 m resolution
- Primary applications: Urban planning, disaster monitoring
KOMPSAT-3/3A
- Launch date: May 2012 (KOMPSAT-3), March 2015 (KOMPSAT-3A)
- Primary payload: High-resolution optical cameras, resolutions of 0.7 m and 0.55 m respectively
- Primary applications: Military reconnaissance, civil remote sensing
KOMPSAT-5
- Launch date: August 2013
- Primary payload: Synthetic Aperture Radar (SAR), resolution up to 1 m
- Primary applications: All-weather Earth observation, interferometry
KOMPSAT-6
- Launch date: December 2022
- Primary payload: High-performance synthetic aperture radar
- Primary applications: Disaster monitoring, environmental observation, resource exploration
KOMPSAT-7
- Launch date: Planned for 2032
- Target performance: Ultra-high-performance optical payload, resolution better than 0.3 m
- Primary applications: Ultra-high-resolution Earth observation
Satellite Types
Optical Remote Sensing Satellites
KOMPSAT series optical satellites:
| Model | Resolution | Bands | Primary Applications |
|---|---|---|---|
| KOMPSAT-3A | 0.55 m | Panchromatic/Multispectral | High-resolution imaging |
| KOMPSAT-7 | <0.3 m (target) | Panchromatic/Multispectral | Ultra-high-resolution observation |
Synthetic Aperture Radar Satellites
KOMPSAT series SAR satellites:
| Model | Resolution | Band | Primary Applications |
|---|---|---|---|
| KOMPSAT-5 | 1--20 m | X-band | All-weather observation |
| KOMPSAT-6 | High performance | X-band | Interferometry |
Technical Characteristics
High-Resolution Imaging
- Advanced optical systems and image processing technology
- Support for multispectral and hyperspectral imaging
- Optical observation capability with resolution better than 1 m
All-Weather Observation
- SAR payloads enable all-weather, day-and-night observation
- Unaffected by cloud cover and illumination conditions
- Suitable for disaster monitoring and military reconnaissance
Interferometry
- Support for Interferometric SAR (InSAR) applications
- Used for ground surface deformation monitoring
- Supports digital elevation model generation
Application Domains
Civil Applications
- Disaster monitoring: Monitoring of natural disasters such as typhoons, floods, and earthquakes
- Environmental protection: Forest cover change, ocean pollution monitoring
- Urban planning: Urban expansion, transportation planning
- Agriculture: Crop yield estimation, agricultural resource management
Defense Applications
- High-resolution tactical remote sensing
- Intelligence collection
- Battlefield environment awareness
Future Development
KASA has proposed the following in its satellite strategic plan:
- Ultra-high-performance satellites: KOMPSAT-7 target resolution better than 0.3 m
- Satellite constellation: Plans to establish a satellite constellation for higher revisit frequency
- Technology upgrades: Development of new sensors and observation technologies
Related Concepts
References
- KARI, "KOMPSAT Series Overview", 2024.
- KASA, "Satellite Strategic Plan", 2024.