一种基于相邻脉冲比相的高效SAR干扰方法  

An Efficient Jamming Method to SAR Based on Phase-comparison of Neighborhood Pulses

作　　者：吴照宪[1] 吴海[1] 

机构地区：[1]船舶重工集团公司723所,扬州225001

出　　处：《舰船电子对抗》2014年第2期4-8,共5页Shipboard Electronic Countermeasure

摘　　要：针对合成孔径雷达(SAR)方位积累对雷达和目标距离的相对精度要求较高,绝对精度要求较低的特点,提出利用SAR相邻发射脉冲比相的测距方法获得相对精度较高的距离值,从而得到一种能获取二维处理增益的高效SAR干扰方法,克服了以往干扰方法因难以测量SAR平台轨迹而不能获取方位处理增益的缺陷。理论分析和仿真验证都表明该方法既能完成干扰机附近的假目标干扰,也能在较低干扰功率下实现噪声压制干扰。Aiming at the characteristics that the azimuth accumulation of synthetic aperture radar （SAR） requires high relative precision and low absolute precision of range between the radar and the target, this paper brings forward to use the range measurement method of phase comparison of the neighborhood transmitting pulse to fetch the range value with higher precision, therefore fet- ches an effective SAR jamming method that can fetch 2-D processing gain, and overcomes the shortage that prevenient jamming method can not fetch azimuth processing gain for measuring SAR platform trace difficultly. The theory analysis and simulation validation all show that the method can finish not only the false target jamming near the jammer but also noise suppression jamming under lower jamming power.

关 键 词：合成孔径雷达 相邻脉冲比相 欺骗干扰 噪声干扰 

分 类 号：TN971[电子电信—信号与信息处理]