| 摘要: |
| 针对项目对超短波航空通信的实际需求，提出并实现了一种短突发航空超短波通信调制解调器。首先分析了超短波航空通信信道特性，根据信道特性设计了短突发的信号帧格式，提出了适合短突发信号的载波同步和位同步算法，实现了适合信道特性编码调制算法，给出了工作原理和实现过程，最后分析了误码率性能和试验结果。相比长周期通信方式，所提的短突发通信调制解调算法易于实现、计算量小且具有较强抗信道衰落特性，试验和工程使用表明了该算法能很好地满足超短波航空通信的性能需求。 |
| 关键词: 超短波航空通信 编码调制 短突发 |
| DOI： |
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| 基金项目: |
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| A modem algorithm and its implementation in short burst aviation UHF communications |
| JIA Pingsheng |
| (Southwest China Institute of Electronic Technology,Chengdu 610036,China) |
| Abstract: |
| According to the requirement of a practical project,a short burst modem suitable for aviation UHF communications is proposed and implemented. By analyzing the channel characteristics of UHF aviation communications，a short burst signal frame format is designed，and a carrier synchronization and bit synchronization algorithm suitable for short burst signal is proposed. The coding modulation algorithm suitable for the channel characteristics is implemented and the working principle and implementation process are given.Finally,the performance of the bit error rate(BER) and the test result are analyzed. Compared with the long period communication,the proposed algorithm is simple to be implemented and calculated and can overcome channel fading. Test and engineering application prove that the algorithm satisfies the performance requirement of aviation UHF communications. |
| Key words: aviation UHF communication coding modulation short burst |
