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| 导航信号生成互复用技术研究 | |
| 引用本文： | 吴勇敢,刘亚欢,李国通,余超. 导航信号生成互复用技术研究[J]. 宇航学报, 2011, 32(7). DOI: 10.3873/j.issn.1000-1328.2011.07.004 |
| 作者姓名： | 吴勇敢 刘亚欢 李国通 余超 |
| 作者单位： | 1. 中科院上海微系统与信息技术研究所,上海,200050 2. 中科院上海微系统与信息技术研究所,上海200050;上海伽利略导航有限公司,上海200223 3. 上海伽利略导航有限公司,上海,200223 |
| 摘 要： | 随着GNSS(全球导航卫星系统)的发展,需要在一个频段上发射多路导航信号,以提高频谱利用率.多路信号的线性叠加其包络是非恒定的,在通过高功率放大器时会产生AM/PM失真,从而引入定位误差.为了使多路复用后的信号保持包络的恒定,伽利略和GPS系统分别提出了互复用和CASM恒包络处理方法,并已经应用在其试验卫星上.对互复用技术进行了分析研究,得出了信号功率效率与功率分配之间的关系,并给出了功率效率最大化的功率配置方式和功率效率的下限.研究对GNSS中多路信号复用的恒包络处理有重要的指导意义. |
| 关 键 词： | 卫星导航 恒包络 互复用 功率效率 |
Study on Interplex for Navigation Signal Generation |
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| WU Yong-gan,LIU Ya-huan,LI Guo-tong,YU Chao. Study on Interplex for Navigation Signal Generation[J]. Journal of Astronautics, 2011, 32(7). DOI: 10.3873/j.issn.1000-1328.2011.07.004 | |
| Authors: | WU Yong-gan LIU Ya-huan LI Guo-tong YU Chao |
| Affiliation: | WU Yong-gan1,LIU Ya-huan1,LI Guo-tong1,2,YU Chao2 (1.Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China,2.Shanghai GALILEO Industries Ltd,Shanghai 200223,China) |
| Abstract: | With the development of Global Navigation Satellite System,it's necessary to send multi-channel navigation signals in one frequency to improve the spectrum utilization rate.The envelope of signal linearly overlapped multi-channel signals is not constant,and this signal will be distorted by AM/PM when it passed through a high power amplifier,thus bringing in position error.In order to keep the envelope of signal combined by multi-channel signals constant,in Galileo system and GPS system,Interplex and CASM co... |
| Keywords: | Satellite navigation Constant envelope Interplex Power efficiency |
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