舰船轴频电场数据的采集与处理研究  

Data acquisition and processing for the shaft-rate electric field of a ship

作　　者：李松[1] 石敏[1] 杜鑫[1] 

机构地区：[1]海军装备研究院,北京100085

出　　处：《舰船科学技术》2015年第12期100-103,共4页Ship Science and Technology

基　　金：国防预研基金资助项目

摘　　要：舰船轴频电场是极其重要的目标识别特征之一。为了对其开展深入研究,研制了一套基于MSP430单片机的舰船轴频电场采集系统,获取海洋环境电场和舰船的轴频电场信号。对数据分析后发现:信号在近海港口易受强冲击干扰的影响,给目标检测带来困难。针对这种情况,首先对轴频电场数据进行预处理,利用一阶差分法去除数据中的奇异项,利用最小二乘法去除趋势项;然后通过自适应线谱增强器输出信号,结果证明该方法有效压制强冲击背景噪声,经过处理后的数据可直接用于舰船目标检测。Shaft-rate electric field of a ship is one of the important target recognition features. In the course of the real - time detection, the electric signature of the ship is easily influenced by the noise. Based on msp430, a data acquiring system of the shaft- rate electric field of a ship is introduced. Electric Fields in Marine Environment and the shaft - rate electric field of a ship are measured. By analyzing the data, it is found that electric signal is strongly noised near the coast. So here propose a method that the data is preprocessed firstly, and then enhanced by adaptive line enhancement （ALE）. Practical results show that the method is effective.

关 键 词：MSP430 舰船 轴频电场 预处理 自适应线谱增强器 目标检测 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]