New Precision Guidance Method Based on Bistatic Synthetic Apterture Radar  

作　　者：杨春 曾涛 

机构地区：[1]School of Information Science and Technology,Beijing Institute of Technology

出　　处：《Journal of Beijing Institute of Technology》2008年第3期335-340,共6页北京理工大学学报（英文版）

基　　金：the Ministerial Level Advanced Research Foundation(404050301 .4)

摘　　要：A new method is presented to improve guidance precision. This method is based on bistatic synthetic aperture radar. The illuminator works in side looking mode, providing the synthetic aperture and the receiver is disposed on the seeker which operates in the forward looking mode. The receiving antenna is composed of four sub-antennas and so four synthetic aperture radar （SAR） images are to be generated. Target is positioned in SAR images by image matching. The bearing and elevation of image element of target are measured by the principle of monopulse angular measurement. Theory of the proposed method is derived and simulation on bearing measurement is done. Simulation shows that the method is valid and if SNR of target＇s image is above 30 dB, the angular measuring difference is within the confines of 0.04 degree.A new method is presented to improve guidance precision. This method is based on bistatic synthetic aperture radar. The illuminator works in side looking mode, providing the synthetic aperture and the receiver is disposed on the seeker which operates in the forward looking mode. The receiving antenna is composed of four sub-antennas and so four synthetic aperture radar （SAR） images are to be generated. Target is positioned in SAR images by image matching. The bearing and elevation of image element of target are measured by the principle of monopulse angular measurement. Theory of the proposed method is derived and simulation on bearing measurement is done. Simulation shows that the method is valid and if SNR of target＇s image is above 30 dB, the angular measuring difference is within the confines of 0.04 degree.

关 键 词：precision guidance bistatic synthetic aperture radar（BSAR） MONOPULSE angular measurement 

分 类 号：TN958[电子电信—信号与信息处理]