Sousa, FernandoNunes, Fernando2017-01-062017-01-062016-12SOUSA, Fernando M. G; NUNES, Fernando - Performance of a VDFLL GNSS Receiver Architecture in Presence of Interference. In Proc ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC). Noordwijk, Netherlands: IEEE, 2016. Vol. 1/Pp. 1 – 8http://hdl.handle.net/10400.21/6690We discuss the advantages of using a vector delay/frequency-locked loop (VDFLL) architecture for GNSS receivers operating in scenarios disturbed by radio-frequency interference. Narrowband (sinusoidal) and wideband (chirp) interference signals are considered in the analysis. The VDFLL is constituted by a bank of code and frequency discriminators feeding a central extended Kalman filter that estimates the receiver's position, velocity, and clock bias. Simulation results are obtained using sine-phase binary offset carrier BOCs(1,1) modulation. The results are compared with the theoretical performance determined by the effective signal power to noise density ratio.engjournal article