| Bi/multi-static radars have already gotten great attention of domestic and abroad researches due to its ideal anti-disturbing,anti-detecting,anti-stealth performance.However,the separation of the transmitters and receivers incurs the ground clutters spreading on the angle-Doppler plain,causing the slow,small and low target submerged in widely clutter.Thus,analyzing and studying the radar clutters compensation techniques is very important.Based on how to improve suppression ability of bi/multi-radar,raising the detection performance,this thesis starts following work:1.A bistatic airborne collaboration radar system is developed.The system contains two independent flying platforms,which could all transmit or receive signal,working in the full mono-static,full-bistatic and mono/bi-static collaboration setup,cooperating with each other when detecting the targets.2.The geometric structure of the bistatic airborne collaboration system is studied.The extension of clutters spectrum on the angle-Doppler plain are sharply decrease by geometrical configuration optimization,which guarantees,which guarantees the clutters suppression during the subsequent procedures.3.An antenna setup strategy is analyzed.By real-time changing the antenna setup based on the relative position of target and platform,it keeps the antenna sweeping angle in 45 degree,which eliminates the possible gain or angle resolution loss.4.The STAP method for bistatic airborne co llaboration system is developed.Every detection mode in the system uses the STAP to collaboration suppresse the clutter improving the clutter suppression ability.5.Adaptive detection for bistatic airborne collaboration system is studied.Bistatic airborne detect the areas of interest cooperatively by using varies of operation modes.Different platforms observing the target from multi-angles can obtain the spatial diversity gain,which enhances the gain of target in echo signals and improves the detection performance of radar system. |
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