使用电场传感器阵列的水下运动目标检测与参数估计

Underwater Moving Target Detection and Parameter Estimation of the Array Electric Field Sensor

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。

Abstract:

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.