On-the-fly Estimation of Antenna Induced Biases in SFAP Based GNSS Antenna Arrays

Ying Chieh Chuang, Inder J. Gupta

Peer Reviewed

Abstract: A method for on-the-fly estimation of antenna induced biases in Space-Frequency Adaptive Processing (SFAP) based antenna arrays employed in Global Navigation Satellite System (GNSS) receivers is presented. The method uses real time SFAP weights along with stored antenna array gain and phase data over the frequency band of the incident signals to efficiently estimate the antenna induced biases in GNSS receiver measurements. Using computer simulations, it is shown that the estimated biases are in good agreement with the true antenna induced biases. The same is true in the absence of all interfering signals as well as in the presence of multiple narrowband and wideband interfering signals. As expected, the antenna induced biases vary with the interference environment.
Published in: NAVIGATION: Journal of the Institute of Navigation, Volume 61, Number 4
Pages: 323 - 330
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