日期：11/21(六) 10:00-12:00
地點：國家科學及技術委員會2樓研討室 (台北市大安區和平東路二段106號)
主持人：陳嘉瑞 博士 (國家太空中心)、林建宏 教授 (國立成功大學地球科學系)
| 時間 | 講題 | 講者 |
|---|---|---|
| 10:00-10:15 | 新創追星立方衛星發展現況 | 陳嘉瑞 博士 (國家太空中心) |
| 10:15-10:30 | Development of GNSS Precise Positioning Payload for Low Earth Orbit (LEO) CubeSats | 曾昭雄 教授 (國立陽明交通大學太空系統工程研究所) |
| 10:30-10:45 | 人工智慧賦能通訊酬載之設計與研製 | 林信標 教授 (國立臺北科技大學太空系統工程研究所) |
| 10:45-11:00 | 立方衛星任務 (TBC) | 張起維 教授 (國立中央大學太空科學與工程學系) |
| 11:00-11:15 | Taiwanese contributions to the VERTECS project | 橋本哲也 副教授 (國立中興大學物理學系) |
| 11:15-11:30 | Gemini-Pollux: Early In-Orbit Results and Operational Lessons from a University 3U CubeSat | 林佳廷 助理教授 (國立成功大學航空太空工程學系) |
| 11:30-11:45 | PEARL-1A/1B for Inter-Satellite Link Experiment | 趙吉光 教授 (國立中央大學太空科學與工程學系) |
| 11:45-12:00 | 綜合討論 |
主持人簡介
陳嘉瑞 博士 (國家太空中心)
Chia-Ray Chen earned his B.S., M.S., and Ph.D. in Aeronautics and Astronautics from National Cheng Kung University in 1989, 1991, and 1995, respectively. Upon completing his doctorate in 1995, he joined the National Space Program Office, now known as the Taiwan Space Agency.
In his early career, Chen played a significant role in the environmental testing of Taiwan’s inaugural satellite, Formosat-1. From 1999 to 2004, he took charge of the thermal design for the Formosat-2 satellite. In 2008, Chen’s contributions led to his promotion as the Director of the Mechanical Engineering Division. From 2009 to 2015, he served as the Telescope Leader in the Formosat-5 program. Between 2019 and 2022, he was elevated to the Director of the Formosat-8 satellite program.
Since January 2023, Chen has assumed the role of Director of the CubeSat Program at TASA. This program serves as a Space Startups Incubator in Taiwan, nurturing and supporting emerging ventures in the space industry.
林建宏 教授 (國立成功大學地球科學系)
Scientist for space science and satellite missions. Have been involved in almost all FORMOSAT missions.
講者簡介
曾昭雄 教授 (國立陽明交通大學太空系統工程研究所)
Chao-Hsiung Tseng received the Ph.D. degree in communication engineering from National Taiwan University (NTU), Taipei, Taiwan in 2004.
Since August 2006, he has been a Faculty Member with the Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology (NTUST), Taipei, where he became a Full Professor, in 2013, and a Distinguished Professor, in 2021. Since February 2024, he has been a Faculty Member with the Institute of Space Systems Engineering and the Department of Mechanical Engineering, National Yang Ming Chiao Tung University (NYCU), Hsinchu, Taiwan, where he is currently a Full Professor. His research interests include microwave communication circuits and systems, radio frequency microfluidic sensors, and noncontact vital-sign radar sensors.
林信標 教授 (國立臺北科技大學太空系統工程研究所)
台北科技大學太空系統工程研究所 教授兼所長
張起維 教授 (國立中央大學太空科學與工程學系)
橋本哲也 副教授 (國立中興大學物理學系)
My research interests lie in observational astronomy, particularly the extragalactic background light (EBL) and transient phenomena such as gamma-ray bursts (GRBs) and fast radio bursts (FRBs). These extragalactic sources provide valuable insights into the formation and evolution of galaxies and the physical processes occurring across the Universe. I investigate these phenomena using multiwavelength observations and statistical approaches to uncover their origins and underlying mechanisms. My research also employs innovative methods, including energy functions and machine-learning classification, to characterize astronomical populations and identify meaningful patterns in observational data. Through these approaches, I aim to address fundamental questions in astronomy and deepen our understanding of the Universe.
林佳廷 助理教授 (國立成功大學航空太空工程學系)
Chia-Ting Lin is an Assistant Professor at the Department of Aeronautics and Astronautics and the Institute of Space Systems Engineering, National Cheng Kung University, Taiwan. His research interests include space science, CubeSat systems engineering, satellite communications, and software-defined radio. His earlier research focused on atmosphere–ionosphere coupling, space weather, and scientific instrument development. He later expanded his work to CubeSat mission development, including telemetry, tracking and command, SDR-based ground stations, and satellite operations. He is currently involved in the Gemini-Pollux 3U CubeSat mission and the institute’s ongoing CubeSat missions, while developing research on adaptive satellite communications, interference mitigation, and small-satellite system integration.
趙吉光 教授 (國立中央大學太空科學與工程學系)
Dr. Chi-Kuang Chao is specialized in space payload, CubeSat, and ionospheric physics and had participating various Taiwan space missions like ROCSAT-1/Ionospheric Plasma and Electrodynamic Instrument, SR-5/Ion Probe, SR-7/Plasma Probe, SR-9/Space Plasma Sensor Package, FORMOSAT-5/Advanced Ionospheric Probe (AIP), IDEASSat/Compact Ionospheric Probe, PEARL-1C/1H CubeSats, etc. It is especially mentioned that AIP has been operated over 8 years longer than its 2-year mission lifetime.
講題摘要
新創追星立方衛星發展現況
講者：陳嘉瑞 博士 (國家太空中心)
「新創追星立方衛星計畫」（Startup CubeSat Program）是一項由政府支持的太空科技發展計畫，旨在透過產、官、學、研及國家太空中心（Taiwan Space Agency, TASA）之間的緊密合作，推動臺灣本土太空產業發展，並強化國內小型衛星技術的自主研發能力。本計畫以太空產業新創育成平台為核心定位，致力於加速技術創新、降低衛星開發成本，並建立兼具商業應用與科學研究能力的永續太空產業生態系。計畫涵蓋三項代表性衛星任務，包括利用海洋水色影像（OCI）進行海洋觀測與漁業資源監測的遙測衛星任務、提供 Ku 頻段高速資料傳輸及 LoRa 低速率物聯網通訊服務的物聯網衛星任務，以及驗證立方衛星寬頻通訊技術的 Ka 頻段通訊衛星任務。每項任務均規劃由四顆 8U 立方衛星組成星系，以提升衛星服務的覆蓋範圍、重訪頻率及可靠度。在完成衛星系統設計、整合與測試後，第一批及第二批衛星已分別於 2025 年 11 月及 2026 年 3 月成功發射升空。本文將介紹新創追星立方衛星計畫的整體推動架構、計畫執行現況及成果。
Development of GNSS Precise Positioning Payload for Low Earth Orbit (LEO) CubeSats
講者：曾昭雄 教授 (國立陽明交通大學太空系統工程研究所)
An inter-university team comprising National Yang Ming Chiao Tung University (NYCU), National Chung Cheng University (CCU), and National Taiwan University of Science and Technology (Taiwan Tech) has been formed to execute a CubeSat key technology R&D project funded by the National Science and Technology Council (NSTC). This project aims to develop a “GNSS Precise Positioning Payload for Low Earth Orbit (LEO) CubeSats” within a 4-year project timeframe. It will employ multi-band carrier-phase differential technology to improve the current positioning accuracy of approximately 100 meters, reducing it to sub-meter levels. Furthermore, the project plans to develop a GNSS signal transmission module and a corresponding ground receiving system to verify the ground demodulation performance of GNSS signals transmitted from LEO satellites. The satellite GNSS receiving subsystem will be implemented by procuring and integrating commercially available space-grade and automotive-grade modules. For the GNSS transmission subsystem and the ground receiving system, commercial chips will be procured, but the systems will primarily be developed and manufactured in-house with the goal of accumulating independent R&D capabilities. In the first year of the project, the GNSS receiver and continuous wave (CW) beacon transmitter subsystems have been completed and functionally verified. Moving forward, space environment testing will be conducted, and the development of the payload flight model will be finalized.
Keywords: Low earth orbit (LEO) satellite, CubeSat, LEO-PNT, GNSS, precise orbit determination (POD)
人工智慧賦能通訊酬載之設計與研製
講者：林信標 教授 (國立臺北科技大學太空系統工程研究所)
本顆酬載將聚焦於具備 AI 即時邊緣運算能力的 L/S-Band 通訊酬載研發與整合，酬載尺寸設計在 2U 大小，適用於 8U 立方衛星本體系統。該酬載系統包含一組光學攝影鏡頭、一組 AI 影像處理系統，以及一組整合 L/S-Band 搭載 DVB-S2 之通訊酬載。
目標透過光學鏡頭取得高解析度遙測影像後，將經由影像處理系統進行即時邊緣運算，執行降低雲層干擾、降噪等前處理，並透過傳統演算法即時比對差異區域用於檢測大型天然災害，如土石流產生之地形變化、颱風過境後山區異常區域，進而實作基於感興趣區域（ROI）的影像區域性壓縮率分級，極大化保留關鍵特徵並剔除無效數據，再經由 S-Band 下行回傳處理結果或原始壓縮資料至地面接收站。
目前第一顆衛星除了具備影像AI壓縮與下行功能外，亦肩負透明轉發（Transparent Transponder）之任務。衛星能夠在單軌的情況下，接收來自無人機或外部來源的 L-Band 上行訊號，系統不對該訊號進行基頻解調變，隨即透過 S-Band 即時下行至地面接收站，實現端到端（End-to-End）的太空資料即時中繼轉發功能，藉此有效驗證初期太空射頻鏈路的穩定性與硬體可靠度。
該雙頻通訊機制為整體系統的關鍵核心，確保資料可完整進出衛星端以支援各類影像與中繼任務。DVB-S2 通訊系統能夠滿足立方衛星在 600 公里通訊距離之資料傳輸，S-Band 下行（衛星至地面接收站）傳輸速率可達 1 Mbps 以上；同時具備 L-Band 上行（無人機或地面站至衛星）訊號接收能力，速率亦為 1 Mbps 以上。
目前已經完成遠距離OTA測試以及溫度循環測試，經過初步的環測已驗證任務功能完成，未來將進行與衛星本體進行整合與測試。
關鍵詞：人工智慧、通訊酬載、AI壓縮、DVB-S2X
Taiwanese contributions to the VERTECS project
講者：橋本哲也 副教授 (國立中興大學物理學系)
Previous observations have revealed that the near-infrared extragalactic background light (EBL) significantly exceeds the integrated light from galaxies. However, the origin of this excess remains unidentified, presenting a major open question in observational astronomy. Because astrophysical objects in the early and local universe exhibit distinct optical emission spectra, high-precision optical observations can determine the origin of this background. To accomplish this, a collaboration led by Japanese institutions—including the Kyushu Institute of Technology (Kyutech), Kwansei Gakuin University, Tokyo City University, Kanazawa University, the University of Tokyo, and some collaborators in Japan—developed the Visible Extragalactic background RadiaTion Exploration by CubeSat (VERTECS). VERTECS was successfully launched in 2026 to pinpoint the origin of the optical EBL. Following a brief overview of the mission, this presentation will highlight the key contributions from Taiwan, which include: (i) the X-band downlink software, (ii) the image distortion correction pipeline, and (iii) the bad-pixel masking algorithms based on the engineering-model data—each of which is presented in detail in separate presentations. In addition, these joint efforts provided Taiwanese students with valuable hands-on training and exchange opportunities at Kyutech, a world leader in academic nanosatellite development.
Gemini-Pollux: Early In-Orbit Results and Operational Lessons from a University 3U CubeSat
講者：林佳廷 助理教授 (國立成功大學航空太空工程學系)
Gemini-Pollux is a 3U CubeSat mission developed by the Han-Ming Hsia Space Science & Technology Center at National Cheng Kung University (NCKU), Taiwan. The mission combines ionospheric science, satellite technology verification, and practical training in space systems engineering. Its scientific objective is to use dual-frequency Global Navigation Satellite System (GNSS) measurements to derive ionospheric total electron content and investigate disturbances associated with space weather and atmosphere–ionosphere coupling. Here, we present early in-orbit results following the launch in May 2026, together with operational lessons obtained during commissioning and subsequent mission operations.
The spacecraft integrates commercial off-the-shelf subsystems, components developed by Taiwanese industry, and a student-designed 3U structure and deployment mechanism. Prelaunch activities included structural analysis, environmental testing, subsystem integration, and end-to-end functional verification. An in-house-developed flight software system based on FreeRTOS coordinates telecommand handling, housekeeping acquisition, subsystem power control, data management, and spacecraft operating modes. A software-defined radio (SDR) ground station supports telemetry reception, telecommand uplink, Doppler compensation, and packet decoding, providing a flexible communication interface for spacecraft monitoring, commissioning, and anomaly investigation.
During the launch and early orbit phase, repeated ground contacts enabled beacon and telemetry reception, spacecraft health assessment, and initial subsystem commissioning. Attitude determination and control system (ADCS) sensor and actuator telemetry was retrieved for ground-based analysis and calibration. Both deployable solar panels were successfully released, as confirmed by changes in panel voltage and current together with burn-wire telemetry. B-dot detumbling was completed within approximately 20 minutes, followed by activation of the Z-axis spin control mode. These results provided in-orbit verification of key deployment, power, communication, and initial attitude-control functions.
The deployable magnetometer was calibrated in orbit using offset corrections and a sensitivity matrix, with measurements compared against the International Geomagnetic Reference Field (IGRF) model. Despite these successful early commissioning results, subsequent operations revealed coupled power, thermal, and onboard resource constraints that limited spacecraft availability and slowed the progression of mission commissioning. In particular, temperature-dependent battery charging protection reduced available charging opportunities under certain orbital thermal conditions, resulting in operational trade-offs among subsystem activation, data storage, attitude control, and communication. Ground testing with engineering hardware has been used to reproduce these conditions, investigate mitigation strategies, and support ongoing spacecraft recovery and operational planning.
Beyond the technical results, the mission provides students with hands-on experience spanning requirements definition, subsystem integration, environmental verification, flight software development, ground-segment implementation, and satellite operations. The early in-orbit experience demonstrates the importance of system-level verification of cross-subsystem interactions, particularly among power, thermal, software, and operational constraints, as well as the value of flexible ground capabilities for telemetry analysis and anomaly recovery. These lessons provide practical guidance for future university CubeSat missions incorporating domestically developed spacecraft technologies.
PEARL-1A/1B for Inter-Satellite Link Experiment
講者：趙吉光 教授 (國立中央大學太空科學與工程學系)
PEARL-1A/1B (Propagation Experiment using kurz-Above-band radio in Low earth orbit) 6U XL CubeSat conducted by National Central University (NCU) for educational training/scientific research have been launched into a sun-synchronous orbit at 590 km altitude around 1100 local time sector by SpaceX CAS500-2 rideshare mission from Vandenberg Space Force Base on 3 May 2026. There are three payloads onboard the CubeSats. A 2U Inter-Satellite Link (ISL) payload equips Rx and Tx in K/Ka-band to perform wide-band communication experiments for satellite to ground and satellite to satellite. A 1U Compact Ionospheric Probe (CIP) could monitor global ionospheric space weather conditions resulting in space communication disruption and navigation outage. A 1U Payload for Solar Cell (PSC) installed on rear side equips III-V compound semiconductor solar cells made by domestic company and research institution for technical demonstration. In this presentation, some preliminary results from the payloads will be presented and some works on CubeSat operations will also be discussed in an in-orbit check phase.
Keywords: PEARL; ISL; CIP; PSC
（議程與講題如有異動，以現場公告為準。）