★ 廣州中科萊斯科技發展有限公司 覃曉寧

摘要：針對當前船舶甚高頻（Very High Frequency，VHF）無線通信系統中AIS、DSC等關鍵數據明文傳輸存在的安全風險，本文設計并實現了一種具備多重安全模式與戰術功能的船舶VHF加密通信系統。該系統創新性地利用自定義密鑰管理協議封裝AIS標準8號報文，并采用基于AES256的動態與靜態密鑰混合加密機制，對AIS終端數據進行實時加密處理。系統同時設計了三重物理通道架構：標準AIS A/B通道（CH87/ CH88）及專用加密S通道（158.625MHz），并構建了鏈路層加密與網絡層身份認證的雙重安全架構。為實現多樣化的海上行動需求，系統集成了四種工作模式：正常模式（N）、加密模式（Se）、混合模式（Si）及靜默模式（H），支持從常規航行到編隊協同突擊等多種戰術場景。實測表明，本系統在保持與傳統海事系統良好兼容性的同時，顯著提升了通信的保密性、隱蔽性與戰術靈活性，為打擊水上犯罪活動提供了有效的技術手段。

關鍵詞：甚高頻通信；船舶通信；AIS加密；動態密鑰；戰術通信；網絡安全；工作模式

Abstract:  In response to the security risks posed by the plaintext transmission of critical data such as AIS and DSC in current maritime Very High Frequency (VHF) wireless communication systems, this paper designs and implements a ship VHF encrypted communication system featuring multiple security modes and tactical functions. The system innovatively encapsulates the AIS standard Message Type 8 using a custom key management protocol and employs a hybrid dynamic and static key encryption mechanism based on AES256 to perform real-time encryption of AIS terminal data.A triple physical channel architecture is designed, consisting of standard AIS A/B channels (CH87/CH88) and a dedicated encrypted S-channel (158.625 MHz). Furthermore, a dual-layer security framework integrating link-layer encryption and network-layer identity authentication is constructed. To accommodate diverse maritime operational requirements, the system integrates four working modes: Normal mode (N), Encrypted mode (Se), Mixed mode (Si), and Silent mode (H). These modes support various tactical scenarios ranging fromroutine navigation to coordinated assault operations in fleet formations. Field tests demonstrate that the system maintains good compatibility with traditional maritime systems while significantly enhancing communication confidentiality, concealment, and tactical flexibility. It thereby provides an effective technical means for combating waterborne criminal activities.

Key words: VHF communication; Marine communication; AIS encryption; Dynamic key; Tactical communication; Network security; Operating mode

在線預覽：基于甚高頻無線通信技術的船舶加密通信系統的設計與實現.pdf

摘自《自動化博覽》2026年3月刊