摘要
通过深入分析阵列雷达的杂波/干扰抑制问题,提出应用基于线性预测的有噪盲源提取算法来提取阵列雷达的回波信号,实现杂波/干扰的同时抑制,最终提高阵列雷达的目标探测能力。在建立逼真的阵列雷达接收信号模型的基础上,通过仿真分析了该算法提取阵列雷达回波的能力和改善阵列雷达的目标探测能力。结果表明,该算法提取雷达回波信号的效果理想,平均相关系数大于0.93;当运动目标的归一化多谱勒频率大于±0.1Hz时,阵列雷达的检测概率接近1,验证了该算法的可行性和有效性。
By analyzing the rejection problems of interference/clutters from an array radar, a noisy blind source extraction algorithm based on linear prediction is proposed to extract the echo from array radar signals, realize the simultaneous rejection of interference and clutters and finally increase the target detection probability of radar. On basis of the realistic receiving signal model established for array radars, the performance of proposed algorithm for the echo extraction and the target detection is analyzed by the simulation. The results show that using the proposed algorithm, the effect of echo extraction is good and the correlation coefficient on average is more than 0.93. Also, the detection probability of array radar is close to 1 when the normalized Doppler frequencies of moving targets are larger than ±0.1 Hz. The feasibility and the effectiveness of the proposed algorithm are therefore confirmed.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2010年第1期1-5,共5页
Journal of University of Electronic Science and Technology of China
基金
航空科学基金(20092080016)
关键词
阵列雷达
回波提取
线性预测
有噪盲源提取
目标检测
array radar
echo extraction
linear prediction
noisy blind source extraction
target detection
