Adaptive antenna arrays for interference cancellation in GPS and GLONASS receivers

This paper introduces the adaptive antenna array as a possible solution to interference to received GLONASS and GPS signals. Several possible array structures and processors are compared, resulting in a preferred array of 5 elements with a power-inversion processor. Special attention is paid to the array compatibility with the GPS and GLONASS receivers´ tracking processes and to the situation where no interference is received. These considerations lead to specific array design choices. Without these choices, a GPS or GLONASS receiver would not be able to function satisfactorily