Journal
AEROSPACE
Volume 9, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/aerospace9040213
Keywords
microsatellite; new space; synthetic aperture radar (SAR); X-band; small satellite
Categories
Funding
- Challengeable Future Defense Technology Research and Development Program of Agency for Defense Development (ADD) [912777601-9127776-04]
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The S-STEP project aims to develop an innovative high-resolution SAR microsatellite and improve the development efficiency and system quality through the improvement of payload system design.
The small synthetic aperture radar (SAR) technology experimental project (S-STEP) mission aims to develop an innovative spaceborne SAR microsatellite as a constellation of 32 microsatellites featuring a high-resolution stripmap mode of 1 m. The S-STEP is a spaceborne SAR microsatellite technology demonstration program in which innovative approaches have been proposed and investigated for SAR payload system designs for improving the development speed, affordability, size and weight parameters, and quality of SAR satellite systems. In this study, the major design approach includes a bus-payload integrated flat-panel-type SAR payload based on an active phased-array antenna. This study conducted an SAR image performance analysis considering the mission requirements to validate the feasibility of the innovative SAR payload design of the S-STEP. These performance analysis results are presented to demonstrate the effectiveness of the proposed SAR payload design approach under the new space paradigm.
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