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论文:2020,Vol:38,Issue(5):1010-1017 |
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引用本文： |
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敖振, 李凤, 马嫱, 何贵青. 基于北斗导航星座的语音与定位同传通信系统[J]. 西北工业大学学报 |
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AO Zhen, LI Feng, MA Qiang, HE Guiqing. Voice and Position Simultaneous Communication System Based on Beidou Navigation Constellation[J]. Northwestern polytechnical university |
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| 基于北斗导航星座的语音与定位同传通信系统 |
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| 敖振1, 李凤1, 马嫱2, 何贵青1 |
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1. 西北工业大学 电子信息学院, 陕西 西安 710072;
2. 陕西省无线电监测站, 陕西 西安 710065 |
| 摘要: |
| 针对中国北斗比GPS等其他导航系统独有的短报文双向通信功能，研发了适配北斗短报文信道的600 bit/s声码器。声码器采用正弦激励线性预测（sinusoidal excitation linear prediction，SELP）算法，实现了通信质量清晰的语音通信，并进一步设计了一种处理定位信息的坐标压缩算法，为语音编码数据提供了更大的传输空间。基于以上研究，实现了仅用北斗导航系统完成双向保密语音和定位同传的通信系统。该系统首先利用语音转换程序将声码器编解码模块获取的语音编码数据转换为北斗短报文数据格式；然后利用语音编码解析程序与经纬度解析程序从北斗短报文数据中解析出语音编码与位置信息；最后，在北斗短报文收发器上验证了语音通信与定位传输实验效果，主观MOS测试评分表明该研究为北斗短报文语音通信实用化铺平了道路。 |
| 关键词:
北斗短报文
SELP
低速率语音编码
坐标压缩
语音与定位同传通信系统
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| Voice and Position Simultaneous Communication System Based on Beidou Navigation Constellation |
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| AO Zhen1, LI Feng1, MA Qiang2, HE Guiqing1 |
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1. School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, China;
2. Shaanxi Radio Monitoring Station, Xi'an 710065, China |
| Abstract: |
| Considering China Beidou has unique two-way communication capability for short messages that are not available in other navigation systems such as GPS, a 600bps vocoder adapted to the short message channel of Beidou is developed. The sinusoidal excitation linear prediction algorithm is adopted by the vocoder to achieve voice communication with clear communication quality. Furthermore, a coordinate compression algorithm for processing positioning information is designed to provide more transmission space for speech encoded data. Based on the above-mentioned results, a communication system that only the Beidou navigation system is used to complete two-way secure voice and positioning simultaneous interpretation is realized. The system firstly uses a voice conversion program to convert the voice coded data obtained by the vocoder codec module into the Beidou short message data format; and then the voice code analysis program and the latitude and longitude analysis program is used to parse the voice code and location information; Finally, the experimental results of voice communication and positioning transmission are verified on the Beidou short message transceiver, and the subjective MOS test score indicates that the way is paved for the practical use of Beidou short message voice communication. |
| Key words:
Beidou short message
SELP
low rate speech coding
coordinate compression
voice and positioning simultaneous communication system
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| 收稿日期: 2020-01-07
修回日期:
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| DOI: 10.1051/jnwpu/20203851010 |
| 基金项目: 航空科学基金（2017ZD53047）、西安市科技成果转化项目（N2017KE0149）与陕西省重点研发计划项目（N2018KE0058）资助 |
| 通讯作者: 何贵青(1977-),女,西北工业大学副教授,主要从事遥感信息获取与处理、智能信息处理研究。
Email： |
| 作者简介: 敖振(1997-),西北工业大学硕士研究生,主要从事智能信息处理、无线通信网络优化研究。
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| 作者相关文章 |
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| 敖振 在本刊中的所有文章 |
| 李凤 在本刊中的所有文章 |
| 马嫱 在本刊中的所有文章 |
| 何贵青 在本刊中的所有文章 |
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