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With the increasing development of the maritime industry , the safety of the operators become increasingly important. Global Maritime Distress and Safety System in the global satellite search and rescue system plays a key role , as one of the important part of the emergency radio beacons (EPIRBs) , it runs directly related to the safety of the ship . The emergency radio beacon detector is the safety of the ship in the annual inspection testing equipment . , Emergency radio beacons (EPIRBs) detector R \u0026 D and production by foreign companies , the cost is not high , while domestic research in this area rarely . For this problem based on software radio thought to the Samsung SOC chip S3C2440 as the core , the design of the hardware circuit of the emergency radio beacons (EPIRBs) detector . Simulation circuit high frequency signal transmission , reflection, crosstalk , there will be problems , PCB design , the introduction of the concept of signal integrity analysis , LineSim before layout simulation , place and route BoardSim improve the reliability of the PCB board applications . The paper describes the emergency radio beacons (EPIRBs) protocol Overview signal integrity related theories , including the theory of the transmission line , reflection, and crosstalk . Under the agreement, the use of software-defined radio thought, based on the S3C2440 design detector, including the RF front-end and motherboard components . HyperLynx software , combined with the theory of signal integrity , design the PCB , focus on verification of high-speed part of the system , including the reflection and crosstalk between USB , SDRAM .
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