Design of a Test Receiver for Long-Term Performance Assessment of Navigation Satellite Payloads

Young-Jin Song*, Kahee Han, Donghoon Kang, Sanguk Lee, Yoola Hwang

To provide reliable and precise positioning, navigation, and timing (PNT) services to users, global navigation satellite system (GNSS) payloads must transmit navigation signals stably and accurately while minimizing unexpected timing delays and signal distortions. Therefore, it is essential to assess the quality of navigation signals generated by the payloads prior to satellite launch. This paper presents the design of a payload test receiver, which is a real-time hardware receiver intended for long-term (e.g., a few hours or days) performance assessment. Functional architectures for processing navigation signals and generating key measurements (e.g., correlation losses, code delays, S-curve biases) are proposed. A test plan and procedure using the receiver are briefly introduced. It is expected that this study will contribute to the development and validation technologies of navigation satellite payloads. Keywords: GNSS, satellite payload, test receiver, signal quality assessment

Speaker 송영진* 한국전자통신연구원