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一种GPS信号载噪比估计的新算法 被引量：5

New Algorithm for GPS C/N0 Estimation
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摘要 GPS信号的载噪比是影响GPS信号搜索、跟踪以及定位解算的一个重要技术参数。利用GPS信号功率远低于噪声功率的特性以及跟踪环路输出的数据的特点,提出了一种新的GPS载噪比估计算法SMM,然后结合实验结果,在算法准确性和稳定性方面,对SMM算法和其他两种GPS载噪比估计算法VSM和PRM做了对比分析。实验结果表明,该算法稳定性好,准确性介于VSM和PRM之间,实现简单,数据适应性强,可在工程应用中采用。 C/N0 is an important technical parameter which impacts on GPS signal acquisition,tracking and positioning solutions.Considering the characteristic of the output data from the tracking loop and the fact that the power of the GPS signal is far lower than the one of the noise,a new method for GPS C/N0 estimation was provided,named SMM.And then,a comparative analysis was taken between SMM and the other two algorithms VSM and PRM on accuracy and stability,according to the result of the experiment.Experiments show that the stability of the new algorithm is the best,but the accuracy is in between VSM and PRM.For its simple implementation and good adaptability,SMM can be used in engineering applying.
作者 蒋君伟 段晓辉 林阳 晏志鹏 华实
机构地区 北京大学信息科学技术学院区域光纤通信网与新型光通信系统国家重点实验室
出处 《系统仿真学报》 CAS CSCD 北大核心 2009年第24期7786-7788,共3页 Journal of System Simulation
基金 863项目(2007AA12Z334)
关键词 GPS 载噪比 SMM VSM PRM GPS C/N0 SMM VSM PRM
分类号 P228.41 [天文地球—大地测量学与测量工程]
  • 相关文献

参考文献9

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二级参考文献6

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共引文献15

同被引文献36

  • 1Mohamed E A,王永芳,谈展中.用于GPS接收机的自适应算法抗干扰性能比较[J].北京航空航天大学学报,2006,32(5):561-565. 被引量：21
  • 2张琳,初海彬,张乃通.卫星导航用户机空时滤波抗干扰技术[J].北京航空航天大学学报,2007,33(1):76-80. 被引量：16
  • 3唐斌,喻夏琼,董绪荣,赵新曙.智能GPS软件接收机载波跟踪环路设计[J].北京航空航天大学学报,2007,33(7):807-810. 被引量：14
  • 4Yu Jie, Wang Xin-long, Ji Jia-xing. Design and Analysis for an Innovative Scheme of SINS/GPS Ultra - Tight Inte- gration[ J]. Aircraft Engineering and Aerospace Technolo- gy : An International Journal, 2010,82 ( 1 ) :4 - 14.
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  • 6Mao Wei - Lung, Tsao Hen - Wai, Chang Fan - Ren. A New Fuzzy Bandwidth Carrier Recovery System in GPS for Robust Phase Tracking [ J ]. IEEE Signal Processing Let- ter, 2004,11(4) :431 -434.
  • 7Wang H S. Global Positioning System Receiver Tracking- Loop Optimization via an H Approach [ J ]. IEE Proc. - Control Theory Appl. , 2005, 152(6) :715 -722.
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  • 9Hamm C R, Flenniken W S, IV, Bevly D M, et al. Com- parative Performance Analysis of Aided Carrier Tracking Loop Algorithms in High Noise/High Dynamic Environ- ments[ C] fflON GNSS 2004. California: The Institute Of Navigation, 2004:523 - 533.
  • 10Sharawi M S, Akos D M, Aloi D N. GPS C/N0 Estimation in the Presence of Interference and Limited Quantization Levels[J]. IEEE Transactions on Aerospace and Electro- nic System, 2007,43 ( 1 ) :227 - 238.

引证文献5

二级引证文献15

系统仿真学报
2009年 第24期

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