| 高动态环境下基于数据辅助的稳健信噪比估计 |
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| 引用本文： | 谢显中,、刘源源,、雷维嘉.高动态环境下基于数据辅助的稳健信噪比估计[J].西南农业大学学报,2016,38(8):174-181. |
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| 作者姓名： | 谢显中 、刘源源 、雷维嘉 |
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| 作者单位： | 西南政法大学 体育部,重庆,401120 |
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| 基金项目： | 国家自然科学基金项目(61271259，61471076)；重庆市基础与前沿研究计划(cstc2015jcyjA40047)． |
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| 摘 要： | 针对动态环境下存在随机波动变化的多普勒频移和载波相位偏差,提出了一种基于数据辅助的稳健信噪比估计算法,该算法利用数据辅助,对接收信号进行延迟共轭相乘,将多普勒频移转变成固定的相位因子,从时域上克服了相偏和多普勒频移的影响.同时进一步分析了新算法噪声项的影响.仿真结果表明,与基于谱分析算法相比,新算法具有更好的性能,尤其在低信噪比的条件下能保持更高的估计精度,且计算量很小.
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| 关 键 词： | 高动态环境 信噪比估计 时域 多普勒频移 相位偏差 |
Robust Data-Aided SNR Estimation Wlgorithm in High Dynamic Environment |
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| XIE Xian-zhong,LIU Yuan-yuan,LEI Wei-jia.Robust Data-Aided SNR Estimation Wlgorithm in High Dynamic Environment[J].Journal of Southwest Agricultural University,2016,38(8):174-181. |
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| Authors: | XIE Xian-zhong LIU Yuan-yuan LEI Wei-jia |
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| Abstract: | In this paper,by means of the WSR methodology,using the literature material method,Delphi method,analytic hierarchy process (ahp)and fuzzy comprehensive evaluation method,the Chongqing rural mass sports public service capacity research that in reason,things,such as physical level,affect the ability of the Chongqing rural mass sports public service factors are various,and touch each other and influence each other.By creating the evaluation model and evaluation index T =83.1 97 9,the numerical shows that Chongqing rural current situation of the development of mass sports public service ability is good,but still need to further improve the upgrade. |
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