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Satellite based navigation is a rapidly growing application of satellite systems. The recent development of the various Global Navigation Satellite Systems (GNSS) demands attention towards very important technical aspects of interoperability and compatibility. Navigation solution from different constellations translates to an improvement in higher measurement redundancy and improved reliability. In the interoperable receivers the most expensive parts -front ends -can be shared for signal reception of different systems. The scope of this paper is to discuss the reconfigurable Software Defined Receiver (SDR) for GNSS. The paper also opens a window to the implementation of reconfigurable hardware/software multioperable GNSS receiver, featuring sufficient computational power and flexibility.