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

A novel quasi-open loop architecture for GNSS carrier recovery systems / Tahir, Muhammad; LO PRESTI, Letizia; Fantino, Maurizio. - In: INTERNATIONAL JOURNAL OF NAVIGATION AND OBSERVATION. - ISSN 1687-5990. - 2012:(2012), pp. 324858-1-324858-12. [10.1155/2012/324858]

A novel quasi-open loop architecture for GNSS carrier recovery systems

TAHIR, MUHAMMAD;LO PRESTI, Letizia;FANTINO, MAURIZIO
2012

Abstract

The problem of designing robust systems to track global navigation satellite system (GNSS) signals in harsh environments has gained high attention. The classical closed loop architectures, such as phase locked loops, have been used for many years for tracking, but in challenging applications their design procedure becomes intricate. This paper proposes and demonstrates the use of a quasi-open loop architecture to estimate the time varying carrier frequency of GNSS signals. Simulation results show that this scheme provides an additional degree of freedom to the design of the whole architecture. In particular, this additional degree of freedom eases the design of the loop filter in harsh environments.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2497037
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