| 摘要: |
| 介绍了自动车辆定位系统中的技术体系结构。讨论了核心技术通信中的FSK／FM组合调制与非相干解调的基本方法，分析了影响系统误比特率的几个因素。给出了不同条件下的组合FSK／FM调制解调特性比较。 |
| 关键词: 自动车辆定位系统(AVLS) 频移键控 调频 组合调制 |
| DOI：10.3969/j.issn.1001-893X. |
| Received:May 18, 2005Revised:March 07, 2006 |
| 基金项目: |
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| FSK/FM Hybrid Modulation/Demodulation Performance Analysis in an Automatic Vehicle Location System |
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| Abstract: |
| Technological architecture of an Automatic Vehicle Location System(AVLS) is introduced.The hybrid FSK/FM modulation and the non-coherent demodulation method of the core technology telecommunication are introduced.The elements that influence the bit error rate of system are also analyzed.Finally the hybrid FSK/FM modulation/demodulation performance comparison is given under different conditions. |
| Key words: automatic vehicle location system(AVLS),frequency shift keying(FSK),frequency modulation,hybrid modulation, |
