| dc.description.abstract | The purpose of this thesis is to calculate the available space, mass, power etc., for the communication payload of PEARL under the limitation of the hardware and software. Furthermore, it simulates the orbit and attitude of PEARL. Before the CubeSat is launched and deployed, we need to evaluate the feasibility for the mission. It is important to calculate the volume, mass and the use of the power for each subsystem because the space and weight of CubeSat are limited. PEARL is a LEO and Sun-synchronous orbit CubeSat. The subsystems of PEARL almost adopt the products of EnduroSat. The main mission is the communication experiment. PEARL needs to download the data from science payload CIP and to provide a high throughput downlink/uplink satellite communication network. Its orbit period is about 95 minutes and the sunlight time for an orbit is about 62 minutes. It passes near the same ground station twice a day, and the communication time is related to the elevation angle. These factors affect the solar power generation and the amount of data transmission. In addition, the satellite Internet experiment needs to communicate with two or more ground stations, so we have to consider the footprint area. Because KCP is still under development, it will first provide the interface requirements and the limitations of communication payloads with a general CubeSat platform. The simulation shows that PEARL can provide the communication time for Taiwan once in day and once in night, and each time is 3 to 8 minutes. The maximum power that system can provide to the communication payload is 120 W. If PEARL enters the safety mode when the SOC is under 80%, it suggests to use KCP for less than 8 minutes or reduce the power to 80 W. It can maintain the routine operation. If NCU is the center of the communication footprint area, the cone half angle of KCP needs to be above 5 degrees, which can cover Taoyuan. If it is more than 8~9 degrees, it can cover New Taipei, Taipei, Keelung and Taoyuan. If it is more than 10 degrees, it can cover the Taiwan northern region. | en_US |