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.