高频NAVDAT系统测试及未来应用

High Frequency NAVDAT System Testing and Future Applications

NAVDAT是基于OFDM/OAM体制的新型岸基海上数字广播系统,可在中高频播发海上安全信息和其他服务信息,实现岸对船的数字文件播发,如文本、图像、图表及数据等.文章介绍了中法联合开展高频NAVDAT海上测试的情况,提供了试验系统的构建方案,对实际环境下高频NAVDAT测试结果进行分析,结果表明,试验系统的地波信号传输性能基本达到了设计要求,与仿真结果比较接近,采用的帧结构和文件纠错重构方法有效.

NAVDAT is a new shore-based offshore digital broadcasting system based on OFDM/OAM system.It can transmit maritime safety information and other service information in medium and high frequency,and realize the digital file transmission from shore to ship,such as text,image,chart and data.This paper introduced the method of joint to carry out the high frequency NAVDAT sea trials,provided the construction scheme of experimental system,the actual conditions of HF NAVDAT test results were analyzed,and the results show that the test system of ground wave signal transmission performance meet the design requirements,basic compared with the simulation results,the frame structure and file error correction reconstruction method is effective.