Research on new concept cognitive satellite navigation system

Abstract

According to the spectrum division given by the International Telegraph Union (ITU), the current satellite navigation frequency space is particularly crowded. In addition to GLONASS, the four satellite navigation systems partially or completely overlap the frequency bands of GPS, Galileo and COMPASS systems, resulting in satellite navigation signal interference exists objectively and inevitable. Although the new navigation signal design system provides a method of alleviating the mutual interference of satellite navigation signals, however, it can not fundamentally solve the problem of satellite navigation signal compatibility in the long run. Aiming at the demand of compatibility of global satellite navigation system and taking the work pattern and mechanism of human brain as a reference, this paper proposes the basic concept and connotation based on cognitive satellite navigation system and constructs the cognitive satellite navigation system architecture model and information closed-loop life cycle. The electromagnetic environment characteristics and signal compatibility characteristics into the overall structure of the system in order to make the system performance changes with the electromagnetic environment and spectral characteristics of different adaptive changes, in theory, put forward a high-performance environmental model parameter perception Satellite navigation system architecture model, which is the future direction of satellite navigation system development.