Table 1 shows that the PLB we designed has more functions and higher performance.
Conclusion: This letter improves the Personal Location Beacon(PLB), designs and implements a prototype personal maritime emergency radio beacon. The personal beacon used for at sea. Firstly, the beacon automatically or manually activates the Beidou transmitter and COSPAS transmitter to send distress signals not only to the global rescue center, but also to send distress information to the Beidou rescue organization, which alleviates the problem of insufficient COSPAS satellite resources and increases the probability of rescue. Secondly, the human vital signs information is added to upload, so that the search and rescue organization can understand at any time. Thirdly, it increases the BeiDou short message return information circuit, which notifies the personal beacon to stop transmission when the information of the marine accident is confirmed, saving battery power and extending the working time of the personal beacon, which also increases the rescue chance of the people in distress. Therefore, the design of the beacon has more functions and higher performance, and has certain practical significance in marine rescue.
Acknowledgments: This work was funded by project from the Major State Basic Research Development Programme of China (grant number:2018YE0206500).
 2021 The Authors. Electronics Letters published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Received: xx January 2023 Accepted: xx March 2021
doi: 10.1049/ell2.10001
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