摘要
研究了基于电场传感器阵列的水下运动目标检测与参数估计方法。在背景噪声为高斯白噪声和目标作匀速直线运动的假设下,利用电场传感器阵列获取的船舶水下准静态电场空时特征,通过广义似然比检测和随机搜索寻优算法,可实现对海水中运动船舶的目标检测和参数估计。仿真试验结果表明:在信噪比大于0 dB时能够取得较好的估计精度;在信噪比低至10 dB时仍能有效检测目标。
The detection and parameter estimation of a vessel sailing in underwater based on electric field sensors array were studied. On the assumption of white gaussian noise and target＇s moving constantly and straightly, taking advantage of the space-time feature extracted by the E-field, target detection and parameter estimation could be made by GLRT method and Hooke-Jeeve method. Simulation results showed that the presented method could estimate parameters accurately when the signal noise ratio （SNR） was higher than 0 dB and detect effectually until the SNR was at -10 dB.
出处
《海军航空工程学院学报》
2012年第5期530-534,共5页
Journal of Naval Aeronautical and Astronautical University
基金
国防科技重点实验室基金资助(5144407105JB11)
关键词
阵列信号处理
准静态电场
信号检测
参数估计
广义似然比
arraygeneralized likelihoodsignal processing
quasi-static electric field
signal detection
parameter estimation
ratio
