Other military radars that operate on the same C-band frequency include naval radars such as the Japanese FCS-3, the Chinese Type-381 and the Russian S-400 surface-to-air missile system. Patriot missiles are not the only system that create this type of interference. This broadens the search area, but the process of locating the radar by looking at the area under the signal remains the same. Sometimes a radar is only switched on for a short period of time, and interference is only captured at one angle. By stacking these images together (over a month or a year), we can find the source of the RFI where they intersect. Later, the descending satellite also registers RFI in a swath, which becomes bright blue. In the diagram above, the ascending satellite registers Radio Frequency Interference in one of the 250 km by 5 km swaths it imaged, creating a bright red stripe.
0 kommentar(er)
