GNSS including GPS is the most widely used positioning technology in civilian and military applications. The increase in GNSS integrated systems has caused a proportional increase in the vulnerability of these systems to jamming and interference. The interests of individuals or groups willing to break the law may be served by interfering with the normal operation of GNSS enabled systems. The strength of GNSS signals is about -130dBm on the earth’s surface. This makes it relatively easy for anyone with a low power pocket sized device that emits a strong signal to swamp the circuitry in the receiver so that it cannot detect the GNSS signals. In recent years many GNSS jamming devices have become available for purchase over the internet. Interference signal on GNSS signal band can be categorized with jamming and spoofing. Jamming in GNSS frequency means masking the satellite transmissions before the navigational unit can locate them. Spoofing could be done to gain access to services that ate restricted to a certain geographic area or to hide the location of a shipment that is being remotely tracked. GNSS signal can be currently used in civilian application and critical infrastructures which relay on GPS to provide positioning and precision timing. This paper surveys the interference testing platform and presents the conceptual design result of GNSS interference verification platform which can generate the jamming signal, spoofing signal and combining interference signal and also test the multi type interference signal by using receiver unit. Also the impact evaluation scheme due to interference signal is presented as a simulation results.

Keywords: GNSS interference, GNSS signal generator, GPS jamming and spoofing, GNSS signal simulation