摘要
角闪烁背景下,雷达导引头在近距离跟踪阶段存在不能稳定跟踪,甚至不能精确跟踪的问题。基于高分辨技术的单脉冲测角方法是抑制角闪烁、提高角跟踪性能的有效途径。现有研究采用幅度加权的思路,在对目标角度的估计过程中只利用了目标多个散射点的幅度信息。对于雷达目标的角度估计和角度跟踪而言,目标几何中心具有确切的物理意义。在距离高分辨条件下,散射点的距离信息表征了目标散射点在径向上的分布情况,对目标几何中心的角度估计更具有实际意义。因此,充分利用高分辨雷达所能提供的有效目标信息,提出了基于目标几何中心的角信息处理方法。仿真结果表明,该方法不仅能有效抑制角闪烁,而且具有更好的跟踪准确性和稳定性。
Radar seeker cannot track the target stably and accurately under the angular glint interference in close tracking phase. Monopulse angle measurement based on high range resolution is an effective way to suppress glint error and improve angular tracking performance. Existing methods only use the amplitude information by weighting in the target angle estimation process. With the high range resolution,the range information to characterize the scattering points in the radial distribution is more practical significance in estimating the angle of geometric center. With the target information provided by high resolution radar,a method of angular information processing based on the geometric center is proposed. The simulation results show that the new method can not only suppress angular glint effectively,but also get better tracking accuracy and stability.
出处
《中国电子科学研究院学报》
2014年第2期194-198,共5页
Journal of China Academy of Electronics and Information Technology
关键词
角跟踪
单脉冲
距离高分辨
几何中心
angular tracking
monopulse
high range resolution
geometric center
