基于FPGA解调电路的示位标检测仪的设计  

Design of EPIRB tester based on FPGA digital demodulation circuit

作　　者：于海鹏 木建一 Yu Haipeng;Mu Jianyi(Jiaxing Nanhu University,Jiaxing Zhejiang,314000;CETC Maritime Electronics Co.Ltd,Ningbo Zhejiang,315040)

机构地区：[1]嘉兴南湖学院,浙江嘉兴314000 [2]中电科(宁波)海洋电子研究院有限公司,浙江宁波315040

出　　处：《电子测试》2022年第4期85-87,共3页Electronic Test

摘　　要：紧急卫星无线电示位标(EPIRB)是一种紧急遇险求救设备,在船只遭遇事故下沉后,EPIRB自动弹出浮到水面,发出求救信号,信号通过国际搜救卫星系统(COSPAS-SARSAT)系统转发到地面站,报告当前位置等信息,使救援组织能够在第一时间抵达遇险海域开展救援工作。在示位标生产研制过程中,及时准确地对其产品指标进行验证测试是必不可少的环节。本文设计了一种基于FPGA的相位解调电路,对示位标发出的无线电信号进行解调处理,解调结果可通过串口进行输出,该电路可针对不同标准的示位标产品进行测试评估,在船级产品检验机构和示位标生产厂家中均得到广泛应用。The Emergency Satellite Radio-position Indicator(EPIRB)is an emergency distress device.After a ship is sunk in an accident,the EPIRB automatically pops up to the surface and sends out a distress signal.The signal is forwarded to a ground station through the COSPAS-SARSAT system to report the information such as the current location.The rescue organizations could reach the sea area in distress at the first time to carry out rescue work.In the process of the production and development of EPIRB,it is necessary to verify and test its product index timely and accurately.In this paper,a phase demodulation circuit based on FPGA is designed to demodulate the radio signal sent out by EPIRB,and the demodulation result can be output through the serial port,and this circuit can be used to test and evaluate the EPIRB of different standards.It has been widely used in classification society and EPIRB manufacturers.

关 键 词：无线电示位标 FPGA 相位解调 

分 类 号：TM933[电气工程—电力电子与电力传动]