| 高灵敏GPS接收机抗干扰特性研究 |
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| 引用本文： | 邸瑞辉.高灵敏GPS接收机抗干扰特性研究[J].航空电子技术,2007,38(1):5-9. |
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| 作者姓名： | 邸瑞辉 |
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| 作者单位： | 北京航空航天大学,北京,100083 |
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| 摘 要： | 采用圆环阵列天线,利用最小规范算法和线性约束最小方差算法对弱GPS信号的干扰信号进行了抑制,并分别针对固定和可变天线阵元数目以及固定和可变干扰信号等多种情况进行了仿真和分析.GPS信号的功率电平假设为-175dBW,干扰信号的功率值在-100dBW～-140dBW范围内可变.仿真结果表明,圆环天线阵列能精确地判定干扰信号的来波方向,该方法能很好地改善对来波干扰信号的赋零深度.
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| 关 键 词： | 最小范数算法 线性约束最小方差算法 圆环阵列天线 全球定位系统 高灵敏 |
| 文章编号： | 1006-141X(2007)01-0005-05 |
| 修稿时间： | 2006年11月17 |
Study on Anti-jamming Performance of High Sensitivity GPS Receiver |
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| DI Rui-hui.Study on Anti-jamming Performance of High Sensitivity GPS Receiver[J].Avionics Technology,2007,38(1):5-9. |
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| Authors: | DI Rui-hui |
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| Abstract: | In this paper,the circular antenna array combining with minimum norm(min-norm) and linearly constrained minimum variance(LCMV)algorithms have been used to suppress weak GPS signal anti-jamming. According to the fixed and unfixed number of circular antenna array elements and the fixed and unfixed power of jammers,the simulations have been done respectively.During the simulation,the power of the useful GPS signals has been assumed to be-175dBW.The power of the jammers was varied within the range from-100dBW to-140dBW.The simulation result indicates that,the circular antenna array can accurately determine the coming direction and improve the effect of assigning null to the jammers. |
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| Keywords: | minimum norm algorithm linearly constrained minimum variance algorithm circular antenna array global positioning system high sensitivity |
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