摘要
针对天波超视距雷达(OTHR)在短相干积累时间条件下的舰船目标检测问题,提出了一种改进的高分辨谱估计方法.相对于传统方法,该方法具有更高的分辨力,能在低信噪比或目标多普勒频率靠近一阶海杂波Bragg峰的情况下有效地估计多普勒谱.理论分析与计算机仿真结果验证了该方法的有效性。
Aimed at the detection of ship targets using sky wave OTHR under the circumstances of short coherent integration time （CIT）, an improved high resolution spectrum estimation method was proposed. Compared with the conventional methods, the proposed method has a higher resolution and can effectively estimate the Doppler spectrum, even the signal to noise ratio （SNR） is lower or the Doppler frequency of the target is closer to that of the first-order ocean clutter Bragg peak. By theoretic analysis and simulations it is proved that the effect of the proposed method is of effectiveness.
出处
《空军雷达学院学报》
2009年第4期261-265,共5页
Journal of Air Force Radar Academy
关键词
超视距雷达
舰船目标检测
高分辨谱估计
MUSIC算法
over-the-horizon radar （OTHR）
ship target detection
high resolution spectrum estimation
MUSIC algorithm
