摘要
介绍了一种低频远程水下遥控平台的设计方法,该遥控平台由水下设备与水面设备2部分组成,具有水声信号编解码、调制解调功能。遥控平台工作频段为2~4 kHz,发射声源级可达190 dB以上,采用直扩系统三重正交编码技术和CPM调制技术,通过实时信道匹配可有效对抗声学多途效应,通信速率可达到16 bps,通过海上实测可靠通讯距离可达到60 km。水下设备采用值守模式,功耗低,系统在休眠状态下功耗约为50 mW,在接收状态下功耗约为2 W,发射时功耗约为8 W。该水下遥控平台操作简易、工作稳定可靠,可以满足远程(50 km以上)低速率水声通讯需要。通过后期功能扩展,该水下遥控平台可用于实现远程水声遥控、远程水声测距、远程水下小数据量数据传输等功能。
In this paper,a design method of low frequency remote underwater remote control platform,the remote control platform consists of two parts,both the surface and underwater devices,with functions of underwater acoustic signal decoding,modulation,demodulation,frequency of 2~4 kHz,minimum emission source level can reach more than 190 dB,the triple orthogonal spread spectrum system coding technology and CPM modulation,with the channel matching can be effective against acoustic directional effect and communication rate can reach 16 bps,through the sea measured validating the communication distance can be up to 60 km.The underwater equipment adopts the on-duty mode with low power consumption.The power consumption of the system is about 50 mW in the dormant state,2 W in the receiving state and 8 W in the transmitting state,experiments validate the work platform is stable and reliable,which can meet the long-distance(over 50 km)low speed underwater acoustic communication needs.Through later function expansion,The underwater remote control platform can be used for remote control of underwater sound,ranging of underwater sound,data transmission of small amount of underwater data and other functions.
作者
高清泽
包吉明
彭飞
Gao Qingze;Bao Jiming;Peng Fei(Dalian Scientific Test&Control Technology Institute,Dalian116013,China;National Marine Environmental Monitoring Center,Dalian116023,China)
出处
《电子测量技术》
2019年第14期137-141,共5页
Electronic Measurement Technology
关键词
水声遥控
三重正交编码
低功耗
CPM调制
信道匹配
underwater acoustic remote control
triple orthogonal coding
low power consumption
CPM modulation
channel matching
