|
|||||
|
|
| 高灵敏度GPS接收机中的互相关减轻算法研究 | |
| 引用本文： | 梁坤,王剑,施浒立.高灵敏度GPS接收机中的互相关减轻算法研究[J].电子学报,2008,36(6):1098-1102. |
| 作者姓名： | 梁坤 王剑 施浒立 |
| 作者单位： | 1. 中国计量科学研究院,北京,100013 2. 北京交通大学电子信息工程学院,北京,100044 3. 中国科学院国家天文台,北京,100012 |
| 基金项目： | 轨道交通控制与安全国家重点实验室(北京交通大学)开放课题 |
| 摘 要： | 通过理论分析,推导出了基于频差因子的互相关计算公式,提出了两种新的互相关减轻算法——并行互相关减去法和基于频差因子的并行互相关减去法.通过仿真实验,在一定多普勒频差下,1到3个干扰强信号、强度强于弱信号16dB到30dB时,两种方法对高灵敏度GPS接收机中互相关影响的减轻都有良好的效果和更强的实用性;基于频差的并行互相关减去法在计算量方面优势更大,可以加快高灵敏度GPS接收机的捕获速度,使其在接收强度较弱、信噪比很低的GPS信号时能正常工作. |
| 关 键 词： | 通信技术 互相关减轻 仿真 码分多址 高灵敏度 GPS接收机 |
| 收稿时间： | 2006-11-22 |
Study on GPS Cross Correlation Mitigation Techniques in High Sensitivity GPS Receivers |
|
| LIANG Kun,WANG Jian,SHI Hu-li.Study on GPS Cross Correlation Mitigation Techniques in High Sensitivity GPS Receivers[J].Acta Electronica Sinica,2008,36(6):1098-1102. | |
| Authors: | LIANG Kun WANG Jian SHI Hu-li |
| Affiliation: | LIANG Kun1,WANG Jian2,SHI Hu-li3 (1.Institute of Metrology,Beijing 100013,China,2.School of Electronics , Information Engineering,Beijing Jiaotong University,Beijing 100044,3.National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China) |
| Abstract: | In terms of the theoretical analysis,the cross correlation computation formula based on frequency difference coefficient was deduced,and two new cross correlation mitigation methods,called the parallel cross correlation subtraction and the parallel cross correlation subtraction based on frequency difference coefficient were addressed.By the tests in which one to three strong interference signals with the intensity of 16 to 30dB were simulated,the effects of the two cross correlation mitigation methods in hi... |
| Keywords: | communication techniques cross correlation mitigation simulation CDMA(code division multiple access) high sensitivity GPS(global positioning system) receiver |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《电子学报》浏览原始摘要信息 | |
| 点击此处可从《电子学报》下载全文 | |