4000_Software-Defined Radio Development Engineer

【Company Overview】 ArkEdge Space Inc. is a space startup founded in 2018, specializing in the design, manufacturing, and operation of small satellites. We focus on the development of ultra-small satellites, particularly 6U and 50kg-class satellites, as well as the creation of satellite constellations—networks of multiple satellites. In addition, we offer a wide range of services, including the provision of related components and software, as well as the operation of ground stations for satellite control. With the mission of "Creating a safer and more prosperous future through satellites," we strive to make space development and utilization accessible to everyone. We are actively building ultra-small satellite constellations for various missions, such as Earth observation, maritime satellite communication (satellite VDES), optical communication, and low-orbit satellite positioning. Furthermore, we are engaged in cutting-edge space missions, including satellite infrastructure development for lunar activities and deep-space exploration. By pioneering these initiatives, we contribute to the creation of a new space industry ecosystem. 【Selection Process】 Document Screening ＞ First Interview ＞ Second Interview ＞ Final Interview 【Job Overview】 Analyze signal formats for low Earth orbit (LEO) and lunar navigation satellites, and develop interface and signal definition documents. Additionally, develop software-defined radios (SDR) for transmitting and receiving positioning signals following these specifications and integrate them with an orbital simulator to construct a signal simulator capable of mimicking signals transmitted from orbit. Develop new positioning standards to shape the future of satellite navigation. 【Specific Responsibilities】 ・Analyze positioning signal formats for LEO and lunar positioning satellites. ・Define signal definition and interfaces in appropriate documentation ・Develop software-defined radios (SDR) for transmitting and receiving navigation signals. ・Develop a signal simulator by integrating the SDR with an orbital simulator. ・Conduct testing and evaluation of positioning signal generation and analysis. ・Utilize open-source software for development. ・Ability to communicate with the navigation community and receiver manufacturers 【Position Benefits】 ・Engage in cutting-edge research and development in satellite-based positioning technology. ・Work in an efficient development environment utilizing open-source software. ・Deepen expertise in GNSS/GPS fields. ・Contribute to the design of proprietary satellite positioning systems. ・Develop future solutions for leading technology with international stakeholders and partners, including JAXA, NASA and ESA ・Opportunity to participate in international conferences and meetings, to present and publish your work 【Tools Used】 ・Common GNSS processing software ・SDR platforms (GNU Radio, USRP, HackRF, etc.) ・Python, C/C++

・Experience in software-defined radio (SDR) development ・Knowledge and experience with GNSS format standards (e.g. RINEX, RTCM) ・Development experience in RF signal generation, reception and analysis ・Proficiency in C/C++ and Python programming

・Knowledge of GNSS/GPS signal generation and processing ・Experience GNSS testing and analysis ・Experience using signal processing tools such as MATLAB or GNU Radio ・Knowledge of orbital mechanics and satellite-based navigation technologies

・Interest in cutting-edge space technologies with a willingness to take on new challenges ・Ability to efficiently develop using open-source software ・Strong team collaboration skills to drive projects forward