Advances in the Theory and Implementation of GNSS Antenna Array Receivers
This chapter focuses on recent developments in the field of antenna arrays applied to the design of robust, high-performance global navigation satellite system (GNSS) receivers. This topic deserved some attention in the past, with many theoretical contributions stressing its superiority and versatility in challenging scenarios with respect to single antenna receivers and mechanically steerable dishes. Nowadays it is of the utmost interest in applications with life-security content, such as precise airplane landing, which requires adequate countermeasures against jamming and sophisticated intentional interferences. This work mainly focuses on the architecture of a GNSS receiver with an adaptive antenna array. The specifics of the design of such receivers are discussed in detail covering both analog and digital signal processing blocks. Special attention is given to the design of such critical components as the antenna array, RF front-ends and A/D converters. The array signal processing techniques are also addressed describing two main strategies based on (1) the spatial filtering with the help of digital beamforming and (2) signal parameter estimation ...