Abstract: BF-1 is the first meteorological satellite based on global navigation satellite system-reflection (GNSS-R) signal measurement technology in China, The new L-band sea surface wind field information detection technology was adopted to provide services for national meteorology, disaster prevention and mitigation and other industries in wind field measurement and sea surface hurricane wind speed inversion. From the perspective of system design, the overall technical indicators of BF-1 satellite were introduced, and the recognition process and results of the satellite system configuration, the key index of the load and the orbital characteristics in combination with the demand analysis were expounded. The technical characteristics of filling the gap of sea surface highprecision wind field monitoring, the first sea launch, satellite ground integrated data inversion, innovative data center and so on were summarized. The wind speed measurement accuracy can reach 2m/s while the wind field measurement is available in the range from 2m/s to 70m/s.  At the same time, the on-orbit test, load performance comparison and follow-up development suggestions were introduced. The design process can be used as a demonstration of subsequent operational satellites and other satellite systems.

Key words: BF-1 satellite, meteorological satellite, system design, technical characteristics, GNSS-R, verification method