A Novel Quasi-Open Loop Architecture forGNSS Carrier Recovery Systems

[摘要] The problem of designing robust systems to track global navigation satellite system (GNSS) signals inharsh environments has gained high attention. The classical closed loop architectures, such as phase lockedloops, have been used for many years for tracking, but in challenging applications their design procedurebecomes intricate. This paper proposes and demonstrates the use of a quasi-open loop architecture toestimate the time varying carrier frequency of GNSS signals. Simulation results show that this schemeprovides an additional degree of freedom to the design of the whole architecture. In particular, thisadditional degree of freedom eases the design of the loop filter in harsh environments.

[学科分类] 电子、光学、磁材料