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基于GPS／INS与天线阵列的导航系统抗干扰设计与分析 被引量：2

Anti-jamming Design and Analysis of Navigation System Based on GPS/INS and Antenna Array
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摘要 详细分析了GPS/INS紧耦合模型的结构和数学模型,给出了相应的EKF算法。分析了单级MVDR(Minimun Variance Distortionless Response)波束形成技术的缺陷,建立了多级MVDR波束形成技术的设计模型。在此基础上,给出了基于GPS/INS与天线阵列相结合的导航系统抗干扰设计模型。最后对该系统的输出载波噪声比和位置误差进行了仿真分析,结果表明,单级波束形成技术由于受到自由度的限制,在多干扰存在情况下产生较大的距离误差,而多级波束形成技术可以有效抑制多干扰信号存在的影响,保证导航系统的可靠工作。 The structure and mathematical model of tightly coupled GPS/INS integration is detailedly analyzed, whose Extended Kalman Filter （EKF） algorithm is given. And then, the shortcoming of single Min- imum Variance Distortionless Response（MVDR） beamforming is analyzed and the design model of multiple MVDR beamforming is set up. On this base, the anti - jamming model of navigation system combing GPS/ INS and antenna array is proposed. Finally, the output Carrier to Noise Ratio and position error is simulated and analyzed. The results demonstrate that the position error of single bearnforming technique due to the limited degree of freedom with the large of interference signals is greater than that of multiple beamforming technique, and that multiple MVDR beamforming can effectively mitigate a number of interference signals and ensure the reliability of navigation system.
作者 王李军 杨小牛 赵惠昌
机构地区 通信系统信息控制技术国家重点实验室 南京理工大学电子工程系
出处 《电讯技术》 2008年第7期18-23,共6页 Telecommunication Engineering
关键词 导航系统 天线阵列 GPS INS 抗干扰 MVDR 自适应波束形成 navigation system antenna array global positioning system （GPS） inertial navigation system （ INS ） anti - jamming minimum variance distortionless response （MVDR） adaptive beamforming
分类号 P228.4 [天文地球—大地测量学与测量工程] TN973.3 [电子电信—信号与信息处理]
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参考文献8

  • 1Bradley P Badke. Global positioning system anti -jamming techniques[ D]. Arizona State University,2002.
  • 2Carles Fern' andez Prades. Advanced signal processing techniques for global navigation satellite systems receivers [ D ]. Department of Signal Theory and Communications, Universitat Polit'ecnica de Catalunya,2005.
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同被引文献21

  • 1谢刚.GPS原理与接收机设计[M].北京:电子工业出版社,2005.
  • 2Alban S, Akos D, Rock S, et al. Performance analysis and architectures for INS- aided GPS tracking loops [ C ]//Proceedings of 2003 ION NTM. Anaheim, CA: ION,2003:611-622.
  • 3Gebre-Egziabher D, Razavi A, Enge P G, et al. Sensitiv- ity and performance analysis of Doppler aided GPS carrier- tracking loops [ J ]. Navigation ,2005,52 (2) :49-60.
  • 4PetovelloMG, O' Drisco11 C, Lachapelle G. Weak signal carrier tracking using extended coherent integration with an ultra-tight GNSS/IMU receiver [ C ]//Proceedings of Euro- pean Navigation Conference. Toulouse : GNSS,2008 : 1-5..
  • 5Petovello MG, Sun D, Lachapelle G, Cannon ME. Per- formance analysis of an ultra-tightly integrated GPS and reduced IMU system [ C ]//Proceedings of 2007 ION GNSS. Alexandria, VA : ION, 2007 : 602-609.
  • 6Petovello M G,Driscoll C, Lachapelle G, et al. Architec- ture and benefits of an advanced GNSS software receiver. (JGPS) [ J ]. Journal of Global Positioning Systems, 2008,7(2) :156-168.
  • 7Yong Yang. Tightly coupled MEMS INS/GPS integration with INS aided receiver tracking loops [ D ]. Calgary, Canada: University of Calgary, 2008.
  • 8Babu R, Wang J L. Analysis of INS derived Doppler effects on carrier tracking loop[ J]. The Journal of Navi- gation, 2005,58 ( 3 ) :493-507.
  • 9Lee K, Lee T, Song T. A study on the tracking loop de- sign for weak signal in high dynamic environment [ C ]// Proceedings of ION 63rd Annual Meeting. Cambridge, MA : ION ,2007:589-594.
  • 10Sun D, Petovello M G, Cannon G E. Use of a reduced IMU to aid a GPS receiver with adaptive tracking loops for land vehicle navigation [ J ]. GPS Solut,2010 ( 14 ) : 319-329.

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电讯技术
2008年 第7期

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