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Detection method of high-orbit satellite to radar main lobe based on antenna beam deflection


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Detection method of high-orbit satellite to radar main lobe based on antenna beam deflection
Liu Shuai1Zhang Pei 2Qi Chundong3
1.Beijing Institute of Spacecraft System Engineering,Beijing 100094,China;
2.Beijing Materials Handling Research Institute,Beijing 100007,China;
3.School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China
antennas beam deflection high-orbit satellites radars main lobe detection electronic reconnaissance satellites detection sensitivity signal noise ratio
In order to improve the signal detection sensitivity and increase the interception probability of high-orbit electronic reconnaissance satellites to radar signals,a detection method of radar main lobe areas is proposed based on antenna beam deflection.According to the maximum elevation of radar emitters,high-orbit satellites can obtain the main lobe and side lobe reconnaissance areas of radar signals.By deflecting certain specific direction and angle in a short period of time,the antenna beam can point to the main lobe reconnaissance area of radars in real time and realize the radar main lobe detection.Simulation results show when the maximum elevation angle of a radar main lobe is 40° and the antenna beam width is 2°,the system can complete radar main lobe detection by deflecting the antenna beam 7.6°.Compared with the radar side lobe detection,the radar main lobe detection can improve the signal noise ratio(SNR)by 12.24 dB at least.


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Last Update: 2015-12-31