The Design Progress of LAPAN-Chiba University SAR Micro-Satellite

The paper describes the progress in system and subsystem design of LAPAN-A5/ChibaSat, the 1st micro-satellite jointly developed by Satellite Technology Center, Indonesian National Institute for Aeronautics and Space (LAPAN), and Center for Environmental Remote Sensing, Chiba University. The satellite will carry synthetic aperture radar (SAR) payload for land cover and ice observation. Augmented with and automatic identification system (AIS) payload, the satellite will also carry maritime surveillance mission. As the Engineering Model of the SAR payload is completed in 2016, the design enters system/configuration phase. The focus of the design phase is to comply with launch constraint such as dimensional envelope and weight, as well as power budget and link budget, while ensuring that the fulfilment of mission objectives. The design method is trade-off study on simplified SAR micro-satellite design model. The design assumes to use bus subsystem heritage from previous LAPAN’s satellites. The design result shows the SAR missions required could be served within micro-satellite dimensional and weight constraints.