基于SD卡和单片机的水下目标辐射噪声模拟器设计  

Design of simulator for underwater target radiated noise based on SD card and ATMega128L

作　　者：王同哲 杨日杰[1] 赵轩坤[1] 孙庆功 

机构地区：[1]海军航空工程学院电子信息工程系 [2]解放军91239部队

出　　处：《国外电子测量技术》2014年第9期63-67,共5页Foreign Electronic Measurement Technology

基　　金：国家自然科学基金(61271444)资助项目

摘　　要：水下目标辐射噪声模拟器在各类被动式声探测设备的研制、验收和人员培训中有着重要意义。介绍了一种水下目标辐射噪声模拟器的设计和实现,该模拟器利用ATMega128L单片机作为控制核心,使用SPI模式控制读取SD卡,经过声源级控制和功率放大模块,将SD卡内预存噪声信号通过换能器进行发射,形成特定目标辐射噪声的模拟信源。另外,介绍了一种可行的计算机模拟特定水下目标辐射噪声的方法。测试证明,该模拟器可有效模拟水下目标,高度还原其噪声谱,达到了设计要求。Underwater target radiated noise simulator is of great stgmtlcance in the inspection and personnel training of various types of passive acoustic detection equipments. This paper describes the design and implementation of underwater target radiated noise simulator, the simulator uses ATMega128L microcontroller as the control core, reads the SD card via SPI mode,emits the noise signals stored in the SD card by the transducer to form a specific target radiated noise analog signal sources, after a source level control and power amplifier module. In addition,this paper introduces a viable method to simulate a specific underwater target radiated noise by computer. Testing proved that the simulator can effectively simulate underwater targets, highly reduce the noise spectrum,and meet the design requirements.development,

关 键 词：水下目标辐射噪声模拟 SD卡 ATMEGA128L SPI 

分 类 号：TN02[电子电信—物理电子学]