The Design Of Mode A/C And Mode S Airborne Interrogator And Transponder System

IFF is an important part of modern warfare. Development of IFF equipmentperformance and electronic countermeasures technology is causing widespread concernof the national military. IFF plays an important role in the information battlefieldmilitary confrontation; it can significantly speed up the reaction speed of the combatsystem, the probability of fratricide. China’s high-reliability, high-security, lowprobability of intercept new IFF also lagging behind stage, only a small number ofcolleges and universities in the theoretical analysis and performance simulation, sostudy the key technology in the new IFF and significance.The subject based on the project relying responsible for studying airborne IFFmode M1/M2/M3/M4/M5. IFF processes, will target reported to weapons after whenairborne radar suspicious target, task management computer. The computer initiated askcommand, when the the IFF interrogator received command, you will be issued a modeof inquiry. Answering the opportunity to judge according to the target answer in the endis friend or foe.The hardware architecture of AD+FPGA+DSP is to achieve IFF baseband signalprocessing board hardware platform designed for the IFF, which follows the classicarchitecture in the secondary radar hardware circuit. Wherein, the FPGA mainlyresponsible for the pre-treatment of the pulse, and an external interface of thecommunication, signaling management and the mode signal of the DSP is mainlyresponsible for the answering machine of the MSK demodulation and decoding.Between FPGA and DSP for data and control characters interact, making the entirehardware system collaborative work normally.The study of multi-mode anti-jamming IFF system is of great significance. Designanalysis, principles and IFF IFF technology trends, design a high performance airborneIFF, and gives the board-level test results of the inquiry and response process, and has agood reference value and application prospects.