| 一种国际搜救信标信号模拟系统的设计与实现 |
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| 引用本文： | 周毅.一种国际搜救信标信号模拟系统的设计与实现[J].科学技术与工程,2013,13(31). |
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| 作者姓名： | 周毅 |
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| 作者单位： | 兰州空间技术物理研究所 |
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| 摘 要： | 为了测试国际搜索与救援卫星转发器，设计了一种406MHz国际搜救信标信号模拟系统，该系统采用了计算机控制和数字调制技术，通过基于FPGA的直接数字频率合成（DDS）实现对射频信号频率、BPSK相位跳变时间和射频发射时间等参数的精确控制。测试结果表明，该系统能够模拟射频搜救信标信号的各种工作参数，具有良好的灵活性。
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| 关 键 词： | 搜救信标 信号模拟 数字调制 直接数字频率合成 时间控制 |
| 收稿时间： | 2013/6/20 0:00:00 |
| 修稿时间： | 2013/6/20 0:00:00 |
Simulation system design and realization for international search and rescue beacon |
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| zhouyi.Simulation system design and realization for international search and rescue beacon[J].Science Technology and Engineering,2013,13(31). |
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| Authors: | zhouyi |
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| Abstract: | To test transponders on international search and rescue satellites, a 406MHz simulation system is designed. In this design computer control and digital modulation technology is adopted. Utilizing digital frequency synthesizer based on FPGA, RF signal parameters including frequency, phase transition time of BPSK modulation and transmission time of RF signal are controlled accurately. Test results show that this system has successfully simulated every parameter of search and rescue beacons with high agility. |
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