| 一种新型同时测向测距四相时空调制扩频系统 |
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| 引用本文： | 宋茂忠,许宗泽.一种新型同时测向测距四相时空调制扩频系统[J].电子科技大学学报(社会科学版),2001(5). |
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| 作者姓名： | 宋茂忠 许宗泽 |
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| 作者单位： | 南京航空航天大学电子工程系 南京210016
(宋茂忠)，南京航空航天大学电子工程系 南京210016(许宗泽) |
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| 基金项目： | 国家自然科学基金资助项目，编号: 69972018 |
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| 摘 要： | 针对通信定位综合一体化的趋势和未来移动通信发展的需要,提出了一种新的四相时空调制扩频技术,设计了一种利用36元均匀间隔圆阵天线发射的通信定位综合化系统。该系统除具有直接序列扩频PSK的通信能力外,还能测定用户方位和传播时延,具有抗多径、抗多用户干扰的潜力。文中给出了信号的编码、调制、发射、解扩和方位角估计等关键技术的解决方案,并分析了误码和测角性能。
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| 关 键 词： | 调制技术 扩频系统 测向 无线定位 移动通信 |
A New Spread-spectrum System with Four Phases Space-time Modulation for Direction-finding and ranging |
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| Song Maozhong,Xu Zongze.A New Spread-spectrum System with Four Phases Space-time Modulation for Direction-finding and ranging[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2001(5). |
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| Authors: | Song Maozhong Xu Zongze |
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| Abstract: | To meet the challenge of future mobile communication and integrated communication and radiolocation systems, a new spread-spectrum system with space-time modulation technology is proposed, with which the system can transmit azimuth and communication message. The transmitting scheme with 36 elements circular array antennae and the spread-spectrum receiver are designed. The performance of the bit error rate and direction-finding are analyzed. Simulation results show that the performance of the bit error rate and spectrum have no influence when the modulated signal carries azimuth message. This technology is the development of modulation theory and a new form of smart antenna. |
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| Keywords: | modulation spread-spectrum system direction-finding wireless location mobile communication |
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